HELIX. 



Plate CXXI. 



Species 714. (ilus. Cuming.) 



Heli.x iiiKSUTA. Uel. testa imperforald, globulmd, dia- 

 jihand, mfd, undique hirsutd, subius hijlald; anfracti- 

 Lus quinque, convexiuaculis, ultimo antici gibbo, aiigu- 

 latim dejlexo ; aperlurd irregulariter transverse luimri, 

 rimuheformi, dente pralongo lamelliformi in pariete 

 aperiurali coarctatd ; peristomale superne vix expanso, 

 basi callo trisinuoso inlrorsum prominente subincras- 

 sato. 



The hairy Helix. Shell impert'oratei), globular, dia- 

 phanous, reddish, hairy throughout, inflated beneath ; 

 whorls five, rather convex, the last gibbous in front, 

 angularly deflected ; aperture irregularly transversely 

 lunar, rim-shaped, contracted by a prolonged lamel- 

 liform tooth on the apertural wall ; lip u little ex- 

 panded at the upper part, thickened inwardly at the 

 base by a prominent trisinuous callosity. 



Say, Joum. Acad. Nat. Sci. Philadelphia, vol. i. p. 17. 

 Helix fraterna. Wood. 



Hab. Pennsylvania, North America. 



Closely allied to H. stenotrevia, but smaller and of more 



transparent texture. 



Species 715. fMus. Cuming.) 



Helix fuka. Uel. testa umbilicatd, Jepressd, virescente- 

 comed, pellucidd, nitidd, striatuld; spird subptanu- 

 latd; anfractibm quatuor, vix convexiusculis, celeriter 

 accrescentibus, ultimo depresso ; umbilico mediocri, 

 pernio; aperlurd perobliqud, lunato-rotutidntd ; peri- 

 stomale simplici, acuto. 



TuE tuanspakent Helix. Shell umbilicated, depressed, 

 greenish-horny, transparent, finely striated ; spire 

 rather flattened ; whorls four, slightly convex, in- 

 creasing quickly, last whorl depressed ; umbilicus 

 middling, open ; aperture \ery oblii)uc, lunar- 

 rounded ; lip simple, acute. 



.\ldek. Catalogue, p. 12. 



JTelicella nitidiosa, Fi'russae. 

 Uelix nitidiosa, llossmiissler. 

 Helix nitidula, var., Drapamaud. 

 Helix lenlicula, Held. 

 Helix elect ri)ia, Gould. 

 Zonifes purus. Gray. 

 Eadcm var. Helix radiatula, .\ldcr. 

 Helix clara, Held. 



Hab. Germany, France, Britain, Massachusetts, U.S. 

 A small greenish glassy shell, more or less faintly 



striated. 



Species 716. (Mus. Cuming.) 



Helix seleni.na. Hel. tesid uiaiilicatd, deprtuu-orbi- 

 culari, pellucido-corned, aUiidd, tenumime oisoletr 

 striata ; an/ractiius quinque, planiwiculis, ultimo ot- 

 tute carinato ; umiiiico parvo, pro/undo ; aperlurd lu- 

 nato-circulari ; peristomate tenui, simplici. 



The moon-like Helix. Shell umbilicated, depressly 

 orbicular, transparent-homy, whitish, verj- finely ob- 

 soletely striated ; whorb five, rather flat, the last ob- 

 tusely keeled ; umbilicus open, deep ; aperture lunar- 

 circular ; lip thin, simple. 



Gould, Pro. Nat. Hist. Soc. Boston, 1848, p. 38. 



Hab. Florida. 



A small whitish-homy species of very simple character. 



Pig. 717. (Mus. Cuming.) 



This shell, received with the name H. monodon, Bioney, 

 proves to be identical with U. cunvexa, Baflnestiue, given 

 at PI. CXIX. Sp. 696. 



Species 718. (Mus. Cuming.) 



Helix interna. Hel. testa anguslitsimi umbilicata, or- 

 biculato-convexiusculd, superni regulcriier el co^ferlim 

 costulatd, sublus laviuiaild, nitidd, pallidi corMed ; 

 spird parum elevatd ; aitfractibua leptem, aitgmtit, 

 superne planatis, ultimo basi coHCtxiore ; umiilicv 

 puncti/ormi ; aperlurd lati lunari ; peritlomalt sim- 

 plici, acuto, margine ba.iali dentibus plie{/brmibtu. ad 

 marginem non porrigentiLus, munito. 



The internal Helix. Shell very narrowly umbiUrntt-d, 

 orbicularly convex, n-gularly luid cIom'Iv ribbed nt 

 the upper part, rather smooth and shining iK-iicnth, 

 pale homy ; spire but little raised ; whorls ^-vcn, 

 narrow, rather flat at the up(x.'r part, Inst whorl mure 

 convex at the bast ; umbilicus puncture-like ; a|»T- 

 ture broadly lunar ; lip simple, shaq), basal marg-iii 

 furnished with two plait-like teeth, not reaching; to 

 the edge. 



Say, Joum. Acad. Nat. Sci. Philadelphia, vol. ii.p 155 

 Uelii pomum-Adami, Green. 



Hab. ALssouri, Ohio, Pennsylvania, Virginia, North 

 iVjncrica. 



Distinguished by ita numerous narrow whoris, strongly 

 rib-striated, and by the internal plait-like tix-th of tin 

 aperture. 



.\ugust, 1852. 



