PUPA. 147 



Binney places the species among the Vertigines, though 

 it is described as having four tentacles. 



Ferussac, 1. c., considered it a Carychium. 



Say's type is still preserved in the collection of the Phil- 

 adelphia Academy. 



PUPA PELLTJCIDA PFEIFFER. 



T. subperforata, cylindracea, tenuis, pellucida, nitida, pallide flavida ; 

 spira parum attenuata, apice obtusa ; anfr. 5 convex!, ultiiiius prasce- 

 dente planior ; apertura semiovalis, 5-dentata : dentibus singulis validis 

 in pariete aperturali et columella, 2 mediocribus in margine dextro, 

 quinto niinimo in basi palati ; perist. simplex, margine dextro expanse, 

 columellari reflexo. Long. 2 ; diam. vix 1 mill. Ap. vix mill, longa. 

 (Pfeifier Mon. Hel. Yiv. ii. 360.) 



This is Pfeiffer's description of a Cuban species quoted 

 from Texas by Roemer (p. 456.) 



PUPA HOPPII ROLLER. 

 PLATE LXXVIII. FIGURE 2. 



Testa dextrorsa, cylindracea, obtusa, laevi ; columella bidentata. Long. 

 1, 2/", R. (Moller.) 



SYNONYMS AND REFERENCES. 



Pupa Hoppii MOLLER, Ind. Moll. Groenl. p. 4, (1842.) 



TROSCHEL, Ar. f. Nat. 1843, ii. 126. 



CHEMNITZ, ed. 2, pi. xix. figs. 29, 30. 



PFEIFFER, Mon. Hel. Viv. ii. 328; iii. 536. 

 Pupa Sleenbuchii BECK, (1847,) teste MORCH, Nat. Bidr. of Groenl. p. 75. 



Remarks. I have seen no specimen of this Greenland 

 shell. The figure I have given is a fac-simile of one of 

 those in Chemnitz, ed. 2. 



SPURIOUS SPECIES. 



Pupa albilabris Ad. is the same as Bui. marginatus. 

 P. costulata Mighels is the same as Bui. harpa. 

 P. exigua Say, &c. is the same as Carychium exiguum. 

 P. fallax Say, &c. is the same as Bui. marginatus. 



