EXHIBIT 23.7




              CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS
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We consent to the incorporation by reference in this Registration Statement on
Form S-4 (File No. 33-57033) our report dated January 15, 1994, appearing in
the Westamerica Registration Statement on Form S-4 (File No. 33-55417) filed on
October 5, 1994 with the Securities and Exchange Commission pursuant to the
Securities Act of 1933.     
    
/s/ Grant Thornton      

Stockton, California
    
January 27, 1995