ZONITES. 127 



lunar; peristome simple, acute, its columellar extremity reflected above, simu- 

 lating a perforation. Greater diameter 4, lesser 3^ mill. ; height, 3 mill. 



Helix Fabricii, BECK, Ind. 21, no descr. MOLLER, Ind. Moll. 



Gr., 4 (1842). PFEIFFER, Zeit. f. Mai. 1848, V. 90; Mon. 



Hel. Viv., III. 32. REEVE, Con. Icon., No. 1459. W. G. 



BINNEY, T. M. U. S., IV. 120. 

 Helix Hammonis, STROM. Trondh. selsk. skrift., III. 425, PL IV. 



Fig. 16. enlarged.' 



Helix nitida, FABRICIUS, Fauna Gr. 389 (doubted by MORCH, 1. c.). 



Conulus Fabricii, MORCH, Nat. Bidr. af Gr., 75 (no descr.). TRYON, Am. Journ. 



Conch., II. 256 (1866). MORCH, Am. Journ. Conch., IV. 29, PL III. Fig. 5 



(1868). 

 Hyalina Fabricii, W. G. BINNEY, L. & Fr.-W. Sh., I. 47 (1869). 



Greenland. 



Animal black, mantle dirty yellow, with black spots, which are to be seen 

 through the shell. Foot long, narrow. Eye-peduncles long, and proportionally 

 rather thick. Tentacles short, blunt (Morch). 



Fig. 45 is copied from an original drawing by Morch, 1. c. I have not seen 

 the species, which certainly must be nearly allied to, if not identical with,/u/yus. 



Zonites Gundlachi, PFEIFFER. 

 Vol. III. PI. XXII. A, Fig. 3. 



Shell perforated, depressed-conic, rather solid, pale rusty-brown, striated with 

 numerous faint lines of growth ; spire elevated, having about five closely re- 

 volving, well-rounded whorls, separated by a very deep suture ; periphery 

 rounded ; base convexly rounded, and excavated around a small, deep perfo- 

 ration ; aperture nearly circular, interrupted for a short space by the penulti- 

 mate whorl ; peristome simple, slightly expanded, and at the columellar region 

 decidedly reflexed. Greater diameter 2i, lesser 2| mill. ; height, 1 f mill. 



Helix Gundlachi, PFEIFFER, Wiegm. Arch. 1840, I. 250; Mon. Hel. Viv. I. 50; 



in CHEMNITZ, ed. 2, I. 239, PL XXX. Figs. 25-28. W. G. BINNEY, Terr. 



Moll., IV. 121. 



Helix pusilla, PFEIFFER, Arch. f. Nat. 1839, I. 351, nee LOWE. 

 Helix egena, GOULD in Terr. Moll., II. 245, PL XXII. a, Fig. 3. not of SAY. 

 Conulus Gundlachi, TRYON, Am. Journ. Conch., II. 256 (1866). 



A. species of the Florida Subregion. Also in Cuba and St. Thomas, Porto 

 Rico, Vieque, Guadeloupe. Tate (Amer. Journ. Conch., V. 155) quotes it from 

 Nicaragua. The species observed by him has the caudal generic characters 

 (not dentition) of Guppya. 



The species is viviparous. 



Jaw not examined. 



Lingual membrane of a Guadeloupe specimen (PI. II. Fig. D, shows 3 



