HELIX.— Plate XXI. 



IrapeziS ; ptrulomate txpaiuo, albo, margwe batali I*- 

 viler areuato, cum euliiiiielld anyulum furmaiite. 



Thk chaste IIeli.x. SIh'II iinpcrfonitcd, depressed, 

 about equally convex above and below, keeled, finely 

 striated, |K-culiarly iudeiitiil throughout, shining, 

 \ellowish-»hite, bencatli a |)ale deciduous ipidi-riiiis ; 

 suture linear, chalky ; whorls four, nithcr llattcned, 

 the last obsolctcly angled ; loluiucUa short, slanting, 

 excavated, slightly twi.stcd towards the base; a])cr- 

 ture subtnipczoid ; lip expanded, white, basal raargiu 

 slightly curved, forniiug an angle with the columella. 



Pfkiffer, Pro. Zool. Soc. 1848, p. 110. 



Hab. ? 



This interesting species is inaiiily distinguished by a 

 character which Dr. i't'eitlir has iiuidentally overlooked. 

 The entire surface of the shell is peculiarly superficially 

 indented. 



Species 87. (Mus. Cuming.) 



Hf.lix Valenciennesii. IM. leald i in perforata, glu- 

 Ijoio-depresid, tenui, diaphand, nilididd, minute striata, 

 alba ; spird partd, wperne depressd ; suturd lineari, 

 tupenii rufo-marginald ; at\fraclibus quatuor, planiiu- 

 culii, ultimo tiibamplo, obtoleli angulato ; columelld 

 declivi, subexcacatd ; aperlurd lunalo-elUpticd ; peri- 

 ttomale timplici, expanao. 



Valenciennes' ILelix. Shell imperforated, globosely 

 depressed, thin, diaphanous, shining, minutely stri- 

 ated, white ; spire small, depressed at the upper 

 part ; suture linear, edged at the upper part with 

 red ; whorls four, rather flat, the last somewhat 

 large, obsolctcly angled ; columella slanting, slightly 

 excavated ; aperture lunar-elliptical ; lip sim|)lc, ex- 

 panded. 



Eydoux, Gucrin's Mag. de Zool. 1838, pi. 115. f 2. 



Hd>. Ishind of Capul, Philippines ; Cuming. 



A delicate subpellucid greenish-white shell, with the 

 suturol line tinged with red towards the apex. It is 

 allied in fonn to //. Albaien»i». 



Species 88. (Mus. Cuming.) 

 Helii Bbodehipii. Ilel. le»ld imperforald, globoto-de- 



preaad, itriatuld, tenui, albidd, carinatd ; spird vix 

 elecatd, apice feri impreud ; anfractibut quatuor, pla- 

 nulati.1, cderiter accrfscenlibus, ultimo basi injlalo ; 

 columella tubdeclici, tnpenii intrante ; aperturd tram- 

 terse late lunari, intus nitidd ; perittomate simplici. 

 inargine supero et basali expanaia, columellari incraa- 

 sato-reflexo. 



BuoDEUip's Helix. Shell imperforated, globosely de- 

 pressed, finely striated, thin, whitish, keeled ; spire 

 scarcely raised, almost impressed at the apex, whorls 

 lour, llattcned, increasing (piickly, the last inflated at 

 the base ; columella rather slanting, entering at the 

 upper part ; aperturi' transversely broadly lunar, 

 shining interiorly ; lip simple, upper and basal edges 

 expanded, columcllar edge thickly reflected. 



Carocolla Jealbata, ]?rodcrip. Pro. Zool. Soc. 1841, p. 45. 

 Helix lirodcripii, Pfeifl'er. 



Hab. Island of Siquijor, Philippines ; Cuming. 



This approaches very closely to H. casta, but the shell 

 is not so shaqily angled, and is not indented upon the 

 surface. 



Species 89. (Mus. Cuming.) 



Helix vik(;o. Hel. lestd imperforatd, aupenie depressd, 

 subtus injlatd, acute carinatd, subtiliter striatd, nitidd, 

 diaphand, pallide slrammed ; anfractibus quatuor, pla- 

 niuscnlis ; columelld oblique deacendente, basi gibbuld ; 

 aperturd securiformi ; periatomate simplici, rufo, mar- 

 gine aupero recto, basali vix reflexiusculo. 



The vikoin Heli.x. Shell imperforated, depressed at 

 the u]iper part, inflated beneath, sharply keeled, finely 

 striated, shining, diaphanous, pale straw-colour ; 

 whorls four in number, rather flat : columella obliquely 

 descending, rather gibbous at the base; apertun- 

 wcdge-shajied ; lip simple, red, upper edge straight, 

 basal edge slightly reflected. 



Carocolla virgo, Broderip, Pro. Zool. Soc. 1841, p. 44. 

 Helix rirgo, Pfciftt r. 



Hab. Island of Zebu, Philippines ; Cuming. 



Always of a uniform pale straw-colour, with the lip 

 edged \vith red-brown. 



