ı H 
Dear Mr. Barber:; 
This turned out to be a most interesting 
bibliographical problem. If you notice every 
species listed in index from p.93-108 is 
given exactly N pages off, i.e. Cimex ornatulus 
on p.93 in book is listed in index as on p.97, 
and Nabis subapterus on p.108 in the book is 
listed in index as on p.112, 
Evidently, the Library which reauested a 
photofilm of p.109-112 was trying to complete 
its copy and didn't check the species in the 
index and discover that no material was actually 
missing. Thank you for loaning us your copy. 
Very truly yours, 
Ass! ,“ Librarian, Ent.& P. 
