1888.] NATURAL SCIENCES OF PHILADELPHIA. " 25 



the examination of books and examples belonging to the Academy 

 of Natural Sciences. 



The following references have been abbreviated in the Catalogue: — 

 Monogi'aphia Heliceorum viventium and Nomenclator Heliceorum 

 viventium by Dr. L. PfeifTer; Proceedings of the Zoological Society 

 of London, containing the papers of Drs. Newcomb, Pfeiffer and 

 Gulick ; Proceedings of the Boston Society of Natural History, 

 containing the papers of Drs. Gould and Mighels ; Contributions to 

 Conchology by C. B. Adams; Proceedings of the California Academy 

 of Sciences; the American Journal of Conchology, containing the 

 papers of Dr. Newcomb, and also the Journal de Conchyliologie, 

 containing many of the papers of Mr. Wm. H. Pease. 



Species marked f are in the author's collection. 



The arrangement of the sub-groups of Achatinella herein adopted 

 is as follows: — 



A 



' Partulina 

 Bulimella 

 A chatinellastrum 

 Eburnella 

 Apex 



B 



Perdicella 



Newcomhia 



Labiella 



Laminella 



Amastra 



Carinella 



C } Leptachatina 



Section PARTULINA Dr. L. Pfeiffer. 



P. aptycha, Pfr. (Achatinella.) Proc. Zool. Soc. tab. 30, f. 1-1855. 

 Newcomhia aphjcha, Pfr. Mall. Bliitt. 165, 1856. 

 Hellder aptyclia, Pse. Proc. Zool. Soc, 615-1869. 

 Perdicella aptycha, Pfr. Nomen. Hel. Viv. 315-1881. 



Sandwich Islands. 



tP. cinerosa, Pfr. (Achatinella.) Proc. Zool. Soc. tab. 30, f. 5,-1855. 



{Helicter perversa, Vse.) Proc. Zool. Soc. 645-1869, (Non Swains.) 



Sandwich Islands. 

 fP. compta, Pse. (Partulina.) 



Partulina compta, Pse. Jour. Conchyl. xvii-1869. 



Molohai. 

 fP. crassa, Newc. (Achatinella.) Proc. Zool. Soc. pi. 24, f. 71-1853. 



Bulimella crassa, Pfr. Mall. Bliitt. 124-1854, 163-1856. 



Partulina crassa, Pse. Proc, Zool. Soc. 647-1869, 



Lanai. 

 3 



