Regarding the statistics on the size of US banks in the editorial "Banking on Bigness," July 23: The article says, "Only one major US bank company, Citicorp, is found on the usual roster of the world's 10 largest banks That, sadly, is now untrue. Citicorp just dropped out of the first 20 of the world's largest banks, and is now rated number 21.The Japanese and European banks have forced all of the US banks into a second echelon of "bigness," and the trend is continuing. Sometime soon the US will not have a bank in the top 40. Charles M. Worthley, Dover, NH Letters are welcome. Only a selection can be published, subject to condensation, and none acknowledged. Please address them to "Readers Write," One Norway St., Boston, MA 02115.