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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 WdH0CgNscI8qKbjs7XhY3Ju/GiwLEwc8hcDurruKwCQ1AMy2G3kvyO4Bi3phatSN
 xRmkDs9hnci3c1Cv+BeC3w==

<SEC-DOCUMENT>0000898822-07-000844.txt : 20070621
<SEC-HEADER>0000898822-07-000844.hdr.sgml : 20070621
<ACCEPTANCE-DATETIME>20070621132548
ACCESSION NUMBER:		0000898822-07-000844
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070614
FILED AS OF DATE:		20070621
DATE AS OF CHANGE:		20070621

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			CARNEY SEAN
		CENTRAL INDEX KEY:			0001239312

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-16209
		FILM NUMBER:		07933228

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		2128780600

	MAIL ADDRESS:	
		STREET 1:		C/O WARBURG PINCUS LLC
		STREET 2:		466 LEXINGTON AVE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10017

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ARCH CAPITAL GROUP LTD.
		CENTRAL INDEX KEY:			0000947484
		STANDARD INDUSTRIAL CLASSIFICATION:	FIRE, MARINE & CASUALTY INSURANCE [6331]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		WESSEX HOUSE
		STREET 2:		45 REID STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM 12
		BUSINESS PHONE:		441-278-9250

	MAIL ADDRESS:	
		STREET 1:		WESSEX HOUSE
		STREET 2:		45 REID STREET
		CITY:			HAMILTON
		STATE:			D0
		ZIP:			HM 12

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ARCH CAPITAL GROUP LTD
		DATE OF NAME CHANGE:	20000508

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RISK CAPITAL HOLDINGS INC
		DATE OF NAME CHANGE:	19950816

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	RISK CAPITAL RE INC
		DATE OF NAME CHANGE:	19950703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>seancarney_form4ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2007-06-14</periodOfReport>

    <dateOfOriginalSubmission>2007-06-15</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000947484</issuerCik>
        <issuerName>ARCH CAPITAL GROUP LTD.</issuerName>
        <issuerTradingSymbol>ACGL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001239312</rptOwnerCik>
            <rptOwnerName>CARNEY SEAN</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O WARBURG PINCUS LLC</rptOwnerStreet1>
            <rptOwnerStreet2>466 LEXINGTON AVE</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares, $0.01 par value per share</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <transactionDate>
                <value>2007-06-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7967</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35970</value>
                    <footnoteId id="F4"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Security holders are Warburg Pincus (Bermuda) Private Equity VIII, L.P. (&quot;WP VIII Bermuda&quot;), Warburg Pincus (Bermuda)
 International Partners, L.P. (&quot;WPIP Bermuda&quot;) and Warburg Pincus Netherlands International Partners I, C.V. (&quot;WPIP
 Netherlands I&quot;).  Warburg Pincus (Bermuda) Private Equity Ltd. (&quot;WP VIII Bermuda Ltd.&quot;) is sole general partner of WP VIII
 Bermuda. Warburg Pincus (Bermuda) International Ltd. (&quot;WPIP Bermuda Ltd.&quot;) is the sole general partner of WPIP Bermuda.
 Warburg Pincus Partners, LLC (&quot;WPP LLC&quot;), subsidiary of Warburg Pincus &amp; Co. (&quot;WP&quot;), is sole general partner of WPIP
 Netherlands I.  WP VIII Bermuda, WPIP Bermuda and WPIP Netherlands I are managed by Warburg Pincus LLC (&quot;WP LLC&quot;).  WP VIII
 Bermuda, WPIP Bermuda, WPIP Netherlands I, WP VIII Bermuda Ltd., WPIP Bermuda Ltd., WPP LLC, WP and WP LLC are referred to
 herein as &quot;Warburg Pincus Entities.&quot;</footnote>
        <footnote id="F2">Sean Carney, a director of the Issuer, is a general partner of WP, a managing director and member of WP LLC and a beneficial
 owner of certain shares of capital stock of WP VIII Bermuda Ltd. and WPIP Bermuda Ltd.  Other than 35,970 Common Shares,
 7,967 of which were received by Mr. Carney pursuant to the distribution described in footnote (3) below and 7,748 of which
 were granted to and are directly owned by Mr. Carney in consideration of his service as a director of the Issuer, the
 Warburg Pincus Entities own 10,974,322 Common Shares.  Mr. Carney may be deemed to have an indirect pecuniary interest
 (within the meaning of Rule 16a-1 under the Securities Exchange Act of 1934) in an indeterminate portion of the shares owned
 by WP VIII Bermuda, WPIP Bermuda and WPIP Netherlands I.  Mr. Carney disclaims beneficial ownership of all shares owned by
 the Warburg Pincus Entities.</footnote>
        <footnote id="F3">On June 14, 2007, WP VIII Bermuda, WPIP Bermuda and WPIP Netherlands I distributed an aggregate of 2,984,963 Common Shares to
 their limited and general partners.  Mr. Carney received 7,967 Common Shares pursuant to the distributions.</footnote>
        <footnote id="F4">The total number of Common Shares beneficially owned by Mr. Carney following the distribution described in footnote (3) was
 erroneously listed as 42,523 (an overstatement of 6,553 Common Shares) in the Form 4 filed by Mr. Carney on June 15, 2007.
 As corrected here, Mr. Carney beneficially owns only 35,970 Common Shares following the distribution described in footnote
 (3).</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Scott A. Arenare, as Attorney-in-fact for Sean D. Carney, Director</signatureName>
        <signatureDate>2007-06-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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