HELIX. 



Plate LXVII. 



Species 345. (Mus. Cuming.) 



Helix Gundlachi. Ilel. teatd umbilicaid, depresso-tur- 

 binattt, nitidd, fidvd; anfractihxn quingue, convexim- 

 ctdis, lenle accresceiUibus, idlimo bast subplauulnto, 

 lineis siMilibus sub lenle sculplo, circa umbilicum ex- 

 cavalo ; aperturd dtpressd, lunari ; peristomate sim- 

 plici, recto, aciilo. 



Gundlach's Helix. Shell slightly umbilicated, de- 

 pressly turbinated, shining, fulvous ; whorls five, 

 rather convex, enlarging slowly, the last rather flat- 

 tened at the base, sculptured, beneath the lens, with 

 fine lines, hollow around the umbilicus ; aperture 

 depressed, lunar ; lip simple, straight, sharp. 



1'feiffer, in Wiegman's Arcliives, 1840, p. 250. 

 Helix pusilla, Pfeiflfcr (not of Lowe). 



llab. Cuba. 



A very small fulvous-horny species, somewhat de- 

 pressly hollowed around the umbilicus. 



Species 346. (Mus. Adams.) 



Helix dimindta. Uel. testd umbilicaid, discoided, pal- 

 lide corned ; spird vix elevatd, sjituris impressii ; an- 

 fractibm qualuor ad quiuqite, suhrotundatis ; nmbilico 

 ampk) ; aperturd lunari, labro simplici. 



The diminished Helix. Shell umbilicated, discoid, 

 pale horny; spire but little raised, sutures im- 

 pressed ; whorls four to five, somewhat rounded ; 

 umbilicus large ; aperture lunar, lip simple. 



Adams, Contributions to Conrhology, No. 3. p. 36. 



Hab. Jamaica. 



An extremely minute discoidal horny species, with a 

 large umbilicus and small aperture. 



Species 347. (Mus. Cuming.) 

 Helix dioscoricola. Hel. testd subumbilicatd, globoso- 

 turbbiatd, tenui, subtiliisimi striald, corned; spird 

 elevatd, obtusd; anfractibus tribusad qualuor, convexis, 

 ultimo medio subimpresso ; aperturd Imiari-rotun- 

 datd ; peristomate simplici, acuta, margine columellari 

 subverticaliler descendente, brevissime re/lexo. 

 The stake-inhabiting Helix. Shell slightly umbili- 

 cated, globosely turbinated, thin, very finely striated, 

 homy ; spire raised, obtuse ; whorls tliree to four. 



convex, the last slightly impressed in the niiddh- ; 



aperture lunar-rounded ; lip simple, acute, columclhir 



margin descending somewhat vertically, very sliortly 



reflected. 

 Adams, Pro. Nat. Hist. Sec. Boston, U.S., 1845, p. 16. 

 Hab. Jamaica. 



A minute species, convoluted into a more oblong spiral 

 than usual. 



Species 348. (Mus. Cuming.) 



Helix KUSCULA. Hel. testd umiilicatd, subconicd, fut- 

 culd ; spird eleratiusculd, apice tubacutu ; anfractibiu 

 quatuor, rotundatis ; aperturd sublunari ,• peristomatf 

 tenui, acuta. 



The bkownisii Helix. Shell umbilicated, subconical, 

 brownish ; spire rather elevated, rather sharp at the 

 apex ; whorls four, rounded ; aperture sublunar ; lip 

 thin, sharp. 



Adams, Contributions to Conchology, No. 3. p. 35. 



Hab. Jamaica. 



A conical species, characterized by a somewhat in- 

 flated growth. 



Species 349. (Mus. Cuming.) 



Helix minusccla. Hel. testd umiilicatd, deprtud, tnui, 

 pellucidd, nilente, sub lente ruguloso-striaic ; spird viz 

 elevatd ; anfractibus quatuor, planiusculit, ultimo It- 

 reti, reliquis vix laliore ; umbilico lata, pervio ; aper- 

 turd subcirculari ; peristomate simplici, acuta. 



The little Helix. Shell umbilicated, depressed, thin, 

 transparent, shining, rugosely striated bi-ncnth thr 

 lens ; spire scarcely raised ; whorls four, rulhcr flnl, 

 last whorl drawn out, but little broader than the 

 rest ; umbilicus broad, open ; aperture nearly circu- 

 lar ; lip simple, acute. 



BiNNEY, Journ. Nat. Hist. See. Boston, U.S., vol. iii. 

 p. 435. pi. 22. f. 4. 



Hab. Vermont, Oliio, North America. 



A minute discoidal shell, miimtely striated throughout 

 in a wrinkled maTincr. 



January, 1852. 



