UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Item 1.

Security and Issuer

This Amended Statement relates to the Common Stock, par value $1.00 per share (“Common Stock”), of International Bancshares Corporation, a Texas corporation (the “Issuer”).  The Common Stock is registered under Section 12(g) of the Securities Exchange Act of 1934.

The principal executive offices of the Issuer are located at 1200 San Bernardo, Laredo, Texas  78040.

Item 2.

Identity and Background

(a)           This amended statement is being filed by Antonio R. Sanchez, Jr. (“Mr. Sanchez”).

(b)           Mr. Sanchez’s business address is P.O. Box 2986, Laredo, Texas  78044-2986.

(c)           Mr. Sanchez is employed by Sanchez Oil and Gas Corporation, whose address is P.O. Box 2986, Laredo, Texas 78044-2986.

(d)           During the last five years, Mr. Sanchez has not been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors).

(e)           During the last five years, Mr. Sanchez was not a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f)            Mr. Sanchez is a citizen of the United States of America.

Item 3.

Source and Amount of Funds or Other Consideration

No material changes.

Item 4.

Purpose of Transaction

On February 28, 2006, the Alicia M. Sanchez Charitable Lead Annuity Trust (of which Mr. Sanchez is Trustee) transferred, as a trust distribution, 76,979 shares of Common Stock to the Sanchez Family Foundation (of which Mr. Sanchez is a Director).

On February 28, 2006, the Estate of Alicia M. Sanchez, deceased (of which Mr. Sanchez is the Executor of the Estate) transferred, as an estate distribution, 1,953,614 shares of Common Stock to the Alicia M. Sanchez Charitable Lead Annuity Trust (of which Mr. Sanchez is Trustee).

On June 8, 2007, the Issuer paid a 10% stock dividend to shareholders of record as of May 21, 2007.  As a result the number of shares beneficially owned by Mr. Sanchez increased accordingly.

On October 7, 2008, the Kelsey V. Stewart GRAT Remainder Trust (of which Mr. Sanchez is Co-Trustee) transferred, as a trust distribution, 475,202 shares of Common Stock to the KVS Two Investment Partnership, L.P. (the “KVS Partnership”).  Mr. Sanchez is a manager of the limited liability company that serves as the general partner of the KVS Partnership.

On October 7, 2008, the Richard A. Stewart GRAT Remainder Trust (of which Mr. Sanchez is Co-Trustee) transferred, as a trust distribution, 475,196 shares of Common Stock to the RAS Two Investment Partnership, L.P. (the “RAS Partnership”). Mr. Sanchez is a manager of the limited liability company that serves as the general partner of the RAS Partnership.

Since December 8, 2008, the 1988 Trust No. 1 (of which Mr. Sanchez is Trustee) has sold a total of 100,000 shares of Common Stock.  Such shares were sold in open market transactions and are more particularly described below:

A description of Mr. Sanchez’s resulting beneficial ownership, after giving effect to the foregoing, is set forth in Item 5 below.  The shares beneficially owned by Mr. Sanchez are held for investment purposes.

Item 5.

Interest in Securities of the Issuer

(a)           Mr. Sanchez beneficially owns an aggregate of 12,126,146 shares of Common Stock, which shares represent 17.68% of the outstanding Common Stock of the Issuer.  The current interest of Mr. Sanchez in the Common Stock of the Issuer is as follows:

(b)           Mr. Sanchez has the sole power to vote or to direct the vote and to dispose or to direct the disposition of the shares held directly by him.  Mr. Sanchez has sole power to vote the shares of Common Stock held by SANTIG, Ltd.  Mr. Sanchez has shared power to vote or to direct the vote and to dispose or to direct the disposition of the shares held by the Sanchez Family Foundation, the RAS/KVS Trusts Investment Partnership L.P., the KVS Two Investment Partnership, L.P., the RAS Two Investment Partnership, L.P. and each of the trusts for which he is co-trustee, and he has sole power to vote or to direct the vote and to dispose or to direct the disposition of the shares held by each of the trusts for which he is the sole trustee.

(c)           During the past sixty days, Mr. Sanchez has not effected any transactions in the Common Stock except the transactions described in Item 4 above.

(d)           Except as described above with respect to shares held by any trust, partnership or foundation, with respect to which various other parties have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock held by such entity, no other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Common Stock of the Issuer beneficially owned by Mr. Sanchez.

(e)           Not applicable.

The filing of this Statement shall not be construed as an admission that Mr. Sanchez is the beneficial owner of any securities covered by this Statement.

Item 6.

Contracts, Arrangements, Understanding or Relationships with Respect to Securities of the Issuer

No material changes.

Item 7.

Material to be filed as Exhibits

None.

Dated:  January 8, 2009

Date

/s/ Antonio R. Sanchez, Jr.

Signature

ANTONIO R. SANCHEZ, JR.

Name/Title

ATTENTION

Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001)