HELIX.— Plate LXXIY. 



Species 385. (Mus. Cuming.) 



Heli.x gerua.vus. Hd. testa umbUicald, depressosuh- 

 globosa, striii increment i subcompicuU, fusco-aurantid, 

 fasciis duaius nitjricanlibius cingulald; anfract'djuH 

 quinque, rotundatis ; umiilico pervio, perspeclivo ; 

 aperlurd subcirculari ; perUtomaie rejlexo, violaceo, 

 viarginibm fere junclis. 



The allied Helix. Shell umbilicated, dcpressly sub- 

 globose, with the stria; of growth rather conspi- 

 cuous, brownish-orauge, encircled with two blackish 

 bands ; whorls five, rounded ; umbilicus open, per- 

 spective ; aperture nearly circular ; lip reflected, vio- 

 let, with the margins almost joined. 



Helix orientalis, Adams and Reeve (not of Gray), Zool. Voy. 

 Samai-ang, Mollusca, p. 61. pi. 16. f. 4. 



Hab. Borneo. 



The aperture of this species obtains a more circular 

 form than is usual in this group, the margins almost 

 meeting on the body-whorl. 



Species 386. (Mus. Cuming.) 



Helix Sowekbyaxa. Hel. testd subumbilicaid, depressd, 

 solidiuaculd, striis cuncenlricis confertis et striis in- 

 cremeidi promhientibm deeussatd, oUvaceo-castaned ; 

 spird depressd ; anfracliius quatuor ad quinque, pla- 

 niusculis, rapidi accrescentibus, ultimo depresso, antice 

 dilatato, basi circa umbilicum profundi excavato ; 

 aperturd perobliqud, lunalo-ovali, intus lacted ; peri- 

 stomate incrassato, marginibus calio tenuissimo junclis, 

 xupero antrorsum arciialo, columellari reflexiusculo. 



Sowebby's Helix. Shell slightly umbilicated, depressed, 

 rather solid, decussated with close-set concentric 

 strise and prominent stria; of growth, olive-chestnut ; 

 spire depressed ; whorls four to five, rather flat, in- 

 creasing rapidly, the last rather depressed, dilated in 



front, deeply e.tcavatcd around the umbilicus ; aper- 

 ture vcrj- oblique, lunar-oval, milk-white within ; lip 

 tliickened, margins joined by a vcrj' thin callosity, 

 upper margin arched fonvards, columellar margin 

 somewhat reflected. 



Pfeiffeu, Symbolae, vol. i. p. 36. 



Helix pachystoma, Hombron and Jacquinot. 



Hab. Carolina Islands. 



Characterized by a peculiar depression of the under 

 part of the shell, hollowed around the umbilicus, with a 

 thickened inflected lip. In general aspect the shell re- 

 minds one of the marine Trochiscm Norriiii. 



Species 387. (Mus. Cuming.) 



Helix Humphreysiana. Hel. testd subanymti iimbili- 

 catd, orbiculato-conoided, siibtus convexd, inallealo- 

 dectissatd et striata, luteo-fulvd, ad peripheriam cas- 

 taneo-fasciatd ; spird elatd, acutiusculd ; anfractibus 

 sex ad septem, convexiusculis, ultimo circa umbilicum 

 compresso ; aperturd obliqud, lunari ; perislomatt sim- 

 plici, acuta, Tuargine columellari vix reflexo. 



Humphreys' Helix. Shell rather narrowly umbili- 

 cated, orbicularly conoid, convex beneath, indeu- 

 tcdly decussated and striated, yellowish-fulvous, en- 

 circled with a chestnut band at the periphcrj' ; spire 

 raised, rather sharp ; whorls six to seven, rather con- 

 vex, the last compressed around the umbilicus ; aper- 

 ture oblique, lunar; lip simple, sharp, columellar 

 margin but little reflected. 



Lea, Trans. Amerienn Phil. Soc. vol. vii. j). 463. pi. 12. 

 f. 16. 



Hab. Mount Ophir, ]\Ialacca. 



The spire is more elevated in this species than in the 

 two nearest allied represented above, and the last whorl 

 fuller and rounded. 



