HELIX. 



Plate V 



Species 21 . (Mus. Cuming.) 



Helix Nobrisii. Eel. testa imperforatS, globoso-de- 

 pressd, solidd, obsolete malleatd, glalrrd, fidvo-citriiid, 

 zonis opacis, candidis, et infra suturas tiutculis irregu- 

 laribm albis nolald ; ipird semiglobosd ; an/ractibus 

 quatuor ad quinque, concexis, ultimo ad columellam 

 latam, callosam, arciiatim prohngatam, excavato ; 

 aperturd lunato-subcirculari, iiitiis lacted; peristomate 

 croMO, lalisdmi expamo. 



NoREis's Helix. Shell imperforated, globosely depressed, 

 solid, obsoletely indented, smooth, fulvous-lemon, 

 with opake white epidermis zones, and marked with 

 irregular white epidermis spots below the sutures ; 

 spire seniiglobose ; whorls four to five, convex, the 

 last excavated at the broad, callous, arcuately pro- 

 longed columella ; aperture lunar-subcircular, white 

 within ; lip thick, very broadly expanded. 



SowERBY, Pfciffcr, Pro. Zool. Soc. 1S42, p. 85. 



Uab. Islands of Luzon and Mindanao, Pliilippines ; 

 Cuming. 



This delicate species comes very near H.pulcherrima, 

 but is certainly distinct. It is always of a clear uniform 

 fulvous lemon-colour, zoned and blotched with opake 

 white epidermis. 



Species 22. (Mus. Cuming.) 



Helix dubiosa. Ilel. testa imperforatd, depresso-globosd, 

 tenui, obsolete malleatd, fiihd, fascid siiturali el area 

 columellari nigro-riifis, fasciisque plurimis epideniiidis 

 hydropJtana albida ornatd ; spird subsemiglobosd ; an- 

 fractibus quatuor, concexiusculis, celeriter accrescenti- 

 bus; columella planulatd,decliei; aperturd lunato-ro- 

 titndatd, peristomate tenui, alio, late expanso, vix re- 

 flexiusculo, margine basali cum columella angulum ob- 

 soletumformante. 



The doibtfol Helix. Shell imperforated, depressly 

 globose, thin, obsoletely indented, fulvous, ornamented 

 with black-red in bands and in coluraellar area, and 

 with numerous white epidermis bands and lines ; 

 spire sub-semiglobosc ; whorls four in number, rather 

 convex, enlarging rapidly ; columella flattened, 

 slanting ; aperture lunar-rounded ; lip thin, white, 

 • broadly expanded, scarcely reflected, basal margin 

 fonoit)'' an obsolete angle with the columella. 



Pfeiffeb, Pro. Zool. Soc. 1845, p. 123. 



Helix dfcipiens, tar. Sowerby. 

 Rah. Island of Samar, Philippines ; Cuming. 



This species is distinct from the following, but it comes 

 very near to H. miraiilis, so much so as to make it doubtful 

 whether it is distinguished by anything more than a diffe- 

 rent kind of epidermis. 



Species 23. (Mus. Cuming.) 



Helix DECIPIENS. Eel. testa imperforatd, tubglcbosd, 

 tenui, lavi, non nitente, pellueidd, fulcd eel tulpkurea, 

 epidermide hydrophand albd strigatd et fasciatd ; spird 

 suielatd ; anfractiius quatuor, rotundalis ; columeUa 

 albd, subareuald ; aperturd lunato-subcirculari, ii>tu» 

 lacted ; peristomate expanso. 



The deceptive Helix. Shell imperforated, subglobose, 

 thin, smooth, not shining, pellucid, fulvous or sul- 

 phurous, streaked and banded with white hydro- 

 phanous epidermis ; spire slightly raised ; whorls 

 four, rounded ; columella white, subarcuatc ; aper- 

 ture lunar-subcircular, white within ; lip expanded. 



Sowerby, Pro. Zool. Soc. 1840, p. 96. 



Uab. Island of Luzon, Philippines ; Cuming. 



Several of Jlr. Sowerby's varieties are to be excluded 

 from this species, which is of light substance, streaked 

 longitudinally with broken lines of white hydrophanous 

 epidermis. 



Species 24. (Fig. a, 4, c, Mus. Cuming.) 



Helix Pas. Eel. testa imperforatd, conoideo-globosd, ob- 

 lique striatd, epidermide hydrophand ubiqut obduetd, 

 albidd tel fused, zonis rariis fuhis et nigricantihut 

 onuitd ; spird elatd ; anfractibus quinque, planius- 

 I cutis; columella subrecii descendente, albidd, dHa- 



tald ; aperturd lunato-ocali, intus lacted; peristomate 

 angusti reflexo, intus brunneo rel albido. 

 The Pan Helix. Shell imperforated, conoid -globose, 

 obliquely striated, covered everywhere with hydro- 

 phanous epidermis, whitish or brown, ornamented 

 with various fulvous and blackish zones ; spiiv 

 raised ; whorls five, r.ithcr flattened ; columella 

 nearly straight, descending, whitish, dilated ; aper- 

 ture lunar-oval, white within ; lip narrowly reflected, 

 brownish or whitish within. 



March, 1851. 



