IIKLIX— Plate CXCVl. 



encircled at the pcrii)hcry witli a sliarp rougli keel, which 

 is more ppnke than the rest of the shell. 



Species 13S1. (Mus. Cuming.) 



Heli.x Kogotensis. Hd. tettd subampliler umiilicald, 

 lenticulari, solidd, acuti cariitatd, xtriatd, sub leute 

 minulissime granulatd, nigro-castaned ; apird brecin- 

 limd, oblmd; anfraclihiu quutuor ad quiiique, plaiiii- 

 latut, ultimo aittici viullo deflexo, supra el infra cari- 

 uam profundi acrobiculari ,- aperturd perobliqud, uuri- 

 formi, laJ/ro conlinuo, alio, craaso, undique expaiim- 

 reflexo, mnrgine superu arcaato, inlua tuberculo tri- 

 angulari munilo, maryine parielali Jlexuono, lamiuam 

 validata liiiguaformem emitleute, vuiryitie baaali medio 

 mhanyidaliM descendenlf, lalem sinintru lubercului 

 duobuJt iiuequalibtts munilo, dextro plicis dualiux in- 

 eequalibus in tuberculo elevato poaitis munilo. 



The Bogota Helix. Shell rather largely umbilicatcd, 

 lens-shaped, solid, sharply keeled, striated, very mi- 

 nutely granulated beneath the lens, blackish-chestnut ; 

 spire very short, obtuse ; whorls four to five, rather 

 flat, the last rather much dellected in front, deeply 

 pitted above and below the keel ; aperture very ob- 

 lique, ear-shaped, lip continuous, white, thick, ex- 

 pandedly reflected throughout, upper margin arched, 

 furnished within v\-ith a triangular tuiiercle, parietal 

 margin flexuous, emitting a strong tongue-shaped 

 lamina, basal margin somewhat angularly descending 



in the middle, the left side being fumisheti with two 

 unequal tubercles, the right side with two unequal 

 plates, placed on a raised tubercle. 



Pfeiffer, Pro. Zool. Soc. November, 1854. 



llab. Santa l"e de Bogota. 



Remarkable for the very prominent tonguc-sliaped la- 

 mina issuing from the parietal margin, with two doublc- 

 plaitcd tubercles ou the lower uargiu. 



Species 1382. (Mus. Cuming.) 



Helix auris. Uel. tesld nnittrali, tubprofundi umbt- 

 licald, Hubauriformi, depresm-lumidd, Itniui, mbpellM- 

 cidd, fulcescenlK-olicacm, slrialuld ; apird vix eUnUd. 

 obtusd ; aulurd impresid ; ai{fraetiljui quatuor ad 

 quinque, leviter convexis, ultimo obtuni rarinatv, aub- 

 tua concexiore, nilente ; aperturd oblique lunan. &u6- 

 ampld, labro pix reflexo. 



The eak Helix. Shell sinistral, rather deeply umbili- 

 catcd, somewhat ear-shaped, depressly tumid, thin, 

 subtransparent, fulvous-olive, finely striated ; spire 

 scarcely raised, obtuse ; suture impressed : whorls 

 four to five, slightly convex, the last obtusely keeled, 

 more convex beneath, shining ; aperture obliquely 

 lunar, rather large, lip scarcely reflected. 



Pfeiffer, Pro. Zool. Soc. November, 1854. 



Hab. Koondah Mountains, near Calicut, India ; Pirrie. 



A light tumid yellowish-olive shell, subtransparent in 

 substance, and of reversed growth. 



