726 Pleurodontc ---Labyrinthus P ar8 ^ 



Subgenus Labyrinthus Beck 1837. ;, ° 1 ) 



Gcnotyp: Pleurodonte (Labyrintbus) otis = labyvintbus. 



(Deshayes). 

 Syn.: Lyrostoma Swainson, l840. Ma ) 

 Lyriostoma Swainson, 1840. 303 ) 



Pleurodonte (Labyrinthus?) eohippina CockereH. 



•1015 Pleurodonte eohippina, Cockerell, (15a) Bull. American Mus 

 Nat. Hist. New York XXXIV, p. 119. Tcxtfig. 4. 

 Vorkommen : M. Paleociin, Sparnacien: Sand Coulea beds: 

 H e a d of B i g S a n d C o u 1 e e (Wyoming). 



Pleurodonte (— ?— ) hesperarche, Cockerell. 



*1914 Helix bespciatchc, Cockercll, (14a) Bull. American Mus. Nat. 

 Hist. New York XXXIII, p. 104, tab. X. fig. 1—3. 

 Vorkommeu: II. Palcorfin: Toircjon (oder Puerco) beds: 

 N. M e x i c o. 



[Zeitliche Verbreitung der tertiaren Species des Genus Pleurodontt ' 



SPECIES 



Pal 



O 

 *j 



a 

 m 



H 



eoc 



S 

 3 



a 



<3 

 o. 



an 



n 



o. 



>• 



E 



1 



•41 



a 



oca 

 (Pr 

 bon 



a 



'□ 



o 



■c 



« 



aa 



n 

 lt- 

 en) 



a 



JU 



m 



Oli 



B 

 «j 



| 



a 

 o 



goc 



a 



V 



X 



o. 



B 



a. 



an 



a 

 5 



-n 



a 

 _*> 



"5 



cd 

 ~S 



tx 



t 



M 



1 



a 



bc 



■a 



t- 



a 



•Q 



ioci 

 (Vin 

 bon 



a 

 •v 



X 



B3 



in 

 do- 



en) 



a 



JU 



a 

 o 

 ti 

 o 

 l- 



- 



■ 

 B 



•S 

 «o 



Pl 



c 



■ 

 o 



(L 



iociin 



a 1 



V 



a 



S : 

 I 1 



hesperarche 



— 



— m 



— 



— 



— 



















— 

















1 



eohippina 





_ 



bowdeniana 







L- 









L 



|, 









^ 01 ) lndex Molluscorum praesentis aevi, Musaei principi6 auguetis- 

 «imi Chri6tiani Frederici, p. 33. 



388 ) A Treatise on Malacology: or, the natural classifiealion N 

 Shells and Shcll Fish, p. 32«. 



•") Ibid., p. 329. 



