404 



PROCEEDINGS OF THE ACADEMY OF 



[1892. 



extending south to Venezuela. It is therefore, like Vallonia, Zoni- 

 toides, Papula, etc., a genus of the Holarctic realm. 



The New Zealand forms referred to St robila have been separated 

 under the name Maoriana by Mr. Suter. They are a modification 

 of Endodonta. 



Living Species. 



S. labyrinthica Say. 



Var. strebeli C. & F. 



Var. virgo Pils. 



Var. affinis Pils. 



Var. morsel Dall. 

 S. salrini Tristr. 

 S. hubbardi A. D. Br. 

 (Syn. H. vendryesiana Gloyne.) 



European Tertiary Species. 



;S^. wnplicata Al. Braun. 



S. elasmodonta Reuss. 



S. diptyx Boettg. 



S. costata Sandb. 



S. labyrinthictila Mich. 



S. sublabyrinthica. 



(Syn. H. lautrieensis Noul.) 

 S. monile Desh. 

 S. pseudolabyrinthica Sandb. 

 S. duvalii Mich. 



Genus AMPELITA Beck. 

 Anatomy unknown.'* 



Genus PEDINOGYRA Alb. 

 Hedley, Proc. Roy. Soc. Queensl. 1889, and Proc. Linn. Soc. N. S. Wales, 1892. 



This genus has characters of groups I and IV, with others ally- 

 ing it to Panda. 



Genus POLYGYRATIA Gray. 



Anatomy unknown. 



Genus MACROCYCLIS Beck. 



This group is still unknown anatomically. A single species, M. 

 laxata, is known. It may belong to Helix s. str. 



Genus SOLAROPSIS Beck. 

 Manual of Conchology (2), v, p. 177. 



This genus rests, at present, wholly upon conchological charac- 

 ters. 



"^^A. .a-jj/^ra has been dissected by the author since this paper was written. It 

 presents peculiar characters which leave the position of the genus problematic. 



