HELIX. 



Plate CXIV. 



Species 622. (Mus. Cuming.) 



Helix zaleta. Ilel. testa obtedi perforata, depremo-glo- 

 bosd, confertmhne coitulalo-driatd, jlam ; spird pa- 

 rum, elald vel depresdmcuid ; anfruclihts quinque ad 

 sex, convexuisculis ; aperturd rotundnto-lunuri ; peri- 

 siomale niigulutim lute rejlexo, Inliis albu, uitido, calloso, 

 marginibns callo tenuksimu, denteni compresstim Un- 

 . guiformevi ublique intrantem emitlenle junctis, colit- 

 mellari brevi, nrcuuto, dihilato. 



The muddy Helix. Shell with a covered umbilicus, 

 depressly globose, very closely rib-like striated, yel- 

 lowish ; spire a little raised or rather depressed ; 

 whorls five to six, rather conve.\ ; aperture rotun- 

 dately lunar ; lip angularly broadly reflected, white, 

 shining and callous within, margins joined by a cal- 

 losity, emitting an obli([uely entering compressed 

 tongue-shaped tooth, columellar margin short, arched, 

 dilated. 



Say, Binney in Journ. Bost. Nat. Hist. Soc. vol. i. p. 492. 

 pi. 20. 



Hab. Ohio, Missouri, &c., North America. 



This is probably a variety of the following, the callosity 

 on the body-whorl being hardly sufficient to distinguish it 

 specifically. 



Species 624. (llus. Cuming.) 



Helix albolabbis. Hel. testa obtecte umbilicald, de- 

 presso-globosd, costulis obliquis striisgue spiraliiiis ob- 

 soletis confertissimis suldeciissaid, Jlavd ; spird partwi 

 elatd; atifractibm quinque ad sex, comexiusctdis ; 

 aperturd rotiiiidato-lunari ; perislomate aiigulatim late 

 rejlexo, intus albo, nitido, calloso, ad columellam brevem 

 arcuatam dilatato. 



The white-lip Helix. Shell with a covered umbilicus, 

 depressly globose, faintly decussated with fine ob- 

 lique riblets and very close-set obsolete spiral stria;, 

 yellowish ; spire but little raised ; whorls five to six, 

 rather convex ; aperture rotundatcly lunar ; lip an- 

 gularly broadly reflected, white, shining and callous 

 within, dilated at the columella, which is short and 

 arched. 



Say, Nicholson's Encyc. (^Vmer. edit.) vol. iv. pi. 1. f. 1. 



Ilab. North America. 



" Found in large numbers," says Dr. Gould, of Boston, 



U.S., " in all the partially cleared forests of New England, 

 skeltered in the moist mould uiulcr decaying logs and rot- 

 ten stumps; and sometimes about stone walls and rocks 

 in the open fields. It is found in all the Stiitcs, except 

 perhaps the southernmost." 



Species 625. (Mus. Cuming.) 



Helix Townsendiana. Uel. tetld uiMticata, depreuo- 

 globosd, ieiiui, concetitrici miimlUiime ttriald, longi- 

 ludinaliter costulalo-rugosd, roriteo luliMqw rariegatd ; 

 spird parum etevatd ; an/ractiiiu sex, planiHscHlu, 

 ullimo injlaio, antice dejkio ; aperturd rotuHdalo-lu- 

 nari, intus fuscescente ; peristomute aUo, i ' j, 



marginibus coiiuiventUjus, tupero late ej, -.'i 



strictiusculo, rejlexo, columellari brevi, dilatato, umii- 

 licum lion occuliante. 



Townsexd's Helix. Shell umbQicatcd, depressly glo- 

 bose, tliin, concentrically vcn,' minutely striated, lon- 

 gitudinally fine rib-like wrinkled, horny, variegated 

 with yellow; spire but little raised; whorls six. 

 rather flat, the last inflated, deflected in front ; aper- 

 ture rotundately lunar, brownish within ; lip white, 

 edged inwardly, margins approximating, upi)cr broad 

 and expanding, basal rather drawn out and n'flect<-d, 

 columellar short, dilated, not concealing the umbilicus. 



Lea, Obser\ations, vol. ii. p. 99. pi. 23. f. 80. 



Hab. WalUamat, North .America. California ; I^ea. 



The surface of tliis species is characterized by a curious 

 yellow-wrinkled character. 



Fig. 650. (Mus. Cuming.) 



The shell here figured is named in Mr. Cuming's col- 

 lection //. rditiaiia, D'Orbignv, but it differs from the 

 description of that species in being sculptured obliquely 

 with close-set riblet striie, and in having from five to six 

 whorls. It is doubtless only a monster U. albolabris. 



Species 657. (Mus. Cuming.) 

 Helix fidelis. IM. testd umbilicatd, orbieulalo-eoHoided, 

 ruguhio-striatd, subtilis-siuu drcHssald, fu*cetcfnle ant 

 Jlariconte, iiiterdum/usco-nebulosd, bati coHtrxn. inter- 

 dum nigricante-eastnued, infra peripkeriam untfataa- 

 Id; anfractibiia septem, coiirexit ; umbilieo mediocn. 



August, 1S52. 



