We are most grateful to several people who have done much to 

 make this present work possible: to Drs. R. T. Abbott and H. 

 B. Baker of the Academy for checking several names and for 

 many helpful suggestions; to Miss Constance Carter of the 

 library staff of the Museum of Comparative Zoology for her 

 interest and aid in locating obscure publications; to Drs. J. C. 

 Bequaert and Merrill Champion of the Museum of Comparative 

 Zoology for editorial aid; and to Anne Harbison of the Academy 

 of Natural Sciences for making possible the publication of 

 Pilsbry's names. 



