HELIX. 



Plate LXXXIX. 



Species 481. (Fig. a, b, c, Mus. Cuming.) 



Helix aulica. Eel. testa vix umbiUcatS, depreuo-orbicu- 

 lari, tenuiculd, injlatd, lavigald, varii coloratd et fai- 

 ciald, coloribus vmidk, suturd interdum opaco-alhd ; 

 spird depnssd, apice plus minus obtusd; anfractibtts 

 quinq'.ie, superni plano-dedivibus, anfractu ultimo *u- 

 perne concavo, Uneis perpaucis irregularihus peculiariter 

 ineiso, medio obtuse carinato ; aperturd antpld, lunari ; 

 periatomate simplici, juxta columellam breviler reflexo. 



The court Helix. Shell scarce!}' umbDicated, depressly 

 orbicular, rather thin, inflated, smooth, variously 

 coloured and banded, colours bright, suture sometimes 

 opake white ; spire depressed, more or less obtuse at 

 the apex ; whorls five, flatly slanting at the upper 

 part, last whorl concave at the upper part, and pe- 

 culiarly engraved with a few irregular lines, obtusely 

 keeled in the middle ; aperture large, hmar ; lip 

 simple, shortly reflected next the columella. 



Pfeiffer (Mus. Cuming). 



Hab. Moluccas. 



Distinguished from E. citritia by its larger size, more 

 depressed spire, and by the slanting concavity of the last 

 whorl, which is further characterized by a few obliquely 

 straggling impressed lines. 



Species 482. (Fig. a to d, Mus. Cuming.) 



Helix citiuna. IM. vix uvMlicatd, contexo-orbiculan, 

 laviyatd, nilidd, varii coloratd el fatciatd, coloribtu 

 vividis, suturd plerumque opaco-albd ; spird obtuta ; 

 anfractihm quinque, concexis, ultimo basi convrro ,• 

 aperturd subampld, lunari ; peristomate simplici, juxta 

 columellam breviter reflexo. 

 The lemon-coloured Helix. Shell umbilicatcd, con- 

 vcxly orbicular, smooth, shining, variously coloiirc*! 

 and banded, colours bright, suture generally opaki- 

 white ; spire obtuse ; whorls five, convex ; ajK-rtun- 

 rather large, lunar ; lip simple, shortly rt- fleeted next 

 the columella. 

 LiNNJSUS, Syst. Nat. (12th edit.) p. 1245. 

 Nanina citrina, Gray. 

 Fitrina cilrina, Quoy and Gaimard. 

 Zonites citrina, Swainson. 

 Eab. Molucca Islands. 



The colouring of this well-known species is cxtn'mily 

 variable. In addition to the four varieties hcr»- sck-ctoi 

 for illustration, there are many more, difTcring more or lew 

 in tint and in the bands. It is constantly distinguishoii 

 from the preceding species, not having any indication of 

 the slanting concavity, nor of the impre9s«-d lines. 



.\pril, 1S52. 



