THE NAUTILUS. 57 



The net result of these many years of field work, if my count 

 is correct, has added four new genera, one new sub-genus and 

 one hundred and thirteen new species to the American fauna, a 

 record that will perpetuate his memory for all time to come. 



Mr. Hinkley was not a voluminous writer, preferring to leave 

 to others the description of his material, but was an occasional 

 contributor to the NAUTILUS from 1887 to 1920. His last note 

 appeared in January, 1920, and an article on his third trip to 

 Guatemala is published in this number. 



Fifteen species have been named after him, viz.: 



Holospira hinkleyi Pils. Gundlachia hinkleyi Walk. 



C&locentrum hinkleyi Pils. Amnicola hinkleyi Walk. 



Salasiella hinkleyi Pils. Schasicheila hinkleyi Pils. 



Averellia hinkleyi Pils. Pomatiopsis hinkleyi Pils. 



Lithasiopsis hinkleyi Pils. Pisidium hinkleyi Sterki. 



Somatogyrus hinkleyi Walk. Smiorella hinkleyi P. and F. 



Lymnaea hinkleyi Baker. Unio hinkleyi B. H. Wr. 



Ancylus hinkleyi Walk. 



TTTERITIDAE VS. TURRIDAE. 



BY S. STILLMAN BERRY. 



By way of completing my own argument, I desire merely a 

 word in reply to the points brought up by Mr. Dall in the last 

 NAUTILUS. I hope he will forgive me for failing to perceive 

 that his statements are in any way relevant to the real point at 

 issue. This is solely and wholly the application of Article 4 of 

 the International Code of Zoological Nomenclature. As I see 

 it, and now on Dr. Ball's own showing in his final paragraph, 

 Tiirritidae as a family name based on Turris is in flat violation 

 of this Article, let alone all admitted principles of Latin orthog- 

 raphy. Were the generic name actually spelled Turritus, the 

 situation would of course be different, and it is merely this that 

 Professor Foster was attempting to indicate; but such a circum- 

 locution is in no way necessary. 



It is a novel principle that a purely derivative name, such as 



