346 ENTOMOLOGICAL NEWS [Oct., '09 



Notes on W. R. Walton's "Illustrated Glossary of 



Chaetotaxy and Anatomical Terms Used 



in Describing Diptera." 



By G. H. VERRALL, Newmarket, England. 



An illustrated glossary is a first-rate idea, and should be of 

 extreme value to (at any rate) beginners in any study; con- 

 sequently Mr. Walton deserves the thanks of Dipterologists. 

 Such a glossary should, however, be fairly complete and should 

 be very accurate, because it is liable to be accepted as "gospel," 

 and therefore before being accepted should be subjected to the 

 severest criticism. 



With all good will towards Mr. Walton's Glossary and with 

 a desire to make it more complete and consequently more use- 

 ful I feel it desirable to make every criticism possible to my 

 knowledge, especially as various misprints and minor flaws 

 occur, as well as numerous omissions and (in my opinion) er- 

 rors which should not be perpetuated. The whole article seems 

 also to have been compiled for "Tachinologists" only, and not 

 for Dipterologists in general. 



*K 'K J' *i* ** 



Page 308, near middle and 314, near bottom : 



I thought that Osten Sacken, Dr. Sharp, and Girschner 

 had completely disposed of the term "Calypter," and that 

 we should never see it used any more. 



Page 310, line 10: 



"Cheeks." We have a common phrase of "cheek by jowl." 

 which is exactly equivalent to the German "Wangen und 

 Backen ;" according to these Mr. Walton's "cheeks" should 

 be "jowls" a term omitted by him though used by Ameri- 

 can writers and his "Gena" should be "cheek" or "side- 

 cheek." As Mr. Walton says, "It seems deplorable that 

 there should be in general use several names for any one 

 part," but who would use "parafacial" for "side-cheek?" 



Page 310, line 20: 



The word "Head" must have occurred here by mistake 

 and should be omitted, but in place of it "Epicephalon" 

 mentioned on page 313, line 16, should be defined. 



