48 LAND AND FRESH-WATER SHELLS OF N. A. [PART T, 



Helix fahricii, Beck, Ind. 21, no descr. — Moller, Ind. Moll. Gr. 4 (1842) 

 — Pfeiffek, Zeit. f. Mai. 1848, V, 90; Moii. Hel. Viv. Ill, 32.— 

 Reeve, Con. Icon. no. 1459.— W. G. Binkey, T. M. U. S. IV, 126, pi. 

 Ixxvii, f. 17. 



Helix hamvionis, Strom. Trondh. selsk. skrift. Ill, 425, pi. iv, f. 16. 



Helix nituhi, Fabricius, Fauna Gr. 389. 



Conulns fahricii, MoRCH, Nat. Bidr. af Gr. 75 (no descr.). — Tryon, Am. 

 Journ. Conch. 11, 25G, pi. iv, f. 38 (1SG6). 



Greenland. 



Fig. 16 is copied from Reeve. 



Hyalina glindlaclii, Pfeiffer. — Shell perforated, depressed- 

 conic, rather solid, pale rusty-brown, striated with numerous, faint lines 

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

 iig. 77. volving, well rounded whirls, separated by a very deep 

 suture ; periphery rounded ; base convexly rounded, and 

 excavated around a small, deep perforation ; aperture nearly 

 circular, interrupted for a short si>ace by the penultimate 

 whirl ; peristome simple, slightly expanded, and at the colu- 

 inellar region decidedly reflexed. Greater diam. 2j, lesser 

 2| ; height If mill. 



Helix gundlachi, Pfeiffer, Wiegm. Arch. 1840, I, 250 ; 



Mon. Hel. Viv. I, 50 ; in Chemnitz, ed. 2, I, 239, pi. 



XXX, f. 25-28. — W. G. Binney, Terr. Moll. IV, 121. 

 Helix pusilla, Pfeiffer, Arch. f. Nat. 1839, I, 351, nee Lowe. 

 Helix eijena, Gould in Terr. Moll. II, 245, pi. xxii, a, f. 3, not of Say. 

 Conulus gundlachi, Tkyox, Am. Journ. Conch. II, 25(5, pi. iv, f. 64 (18G(J). 



Florida. Also in Cuba and St. Thomas, Porto Rico, Yieque. 



Subgenus GASTRODONTA, Albers. 



Shell subperforate or umbilicated, orbicularly depressed, light 

 horn-color, sometimes glassy, with more or less numerous 

 wrinkle-like stria? ; whirls 5-7 ; aperture lunate, its base gener- 

 ally furnished with fold-like denticles not reaching its margin ; 

 peristome simple, acute. 



Animal without a caudal mucus pore. That of //. ivtema, with 

 head, neck, and eye-peduncles bluish-black, or slate-color ; 

 margin and posterior part of foot white. Eye-peduncles very 

 long, tentacles very short ; body narrow and delicate, in length 

 not much exceeding the diameter of the shell. 



