HELIX. 



Plate IX. 



Species 2. (Fig. a, b, Mus. Cuming.) 



Helix B.\taxica. Hel. testa imperforatd, tenuiadd, sttl- 

 globosd, comeo-fulm, fasciis duabus castaneo-nigris 

 ornatd, epidermidk opaco-alhm Itneis fascikque varie 

 cingulatd ; spird oitiisd ; columelld planatd, gubexca- 

 vatd; peristomate tenui, alio, late eff'uso, vix rejlexo. 



The Batan Helix. Shell imperforated, rather thin, 

 subglobose, homy-fulvous, oniamentctl with two 

 chestnut-black bands, variously encircled with bands 

 and lines of opake-white epidermis ; spire obtuse ; 

 columella flattened, slightly excavated ; lip thin, 

 white, broadly effiised, but little reflected. 



Ilab. Island of Batan, north of the Philippine Group ; 

 Belcher. 



This species is peculiar to the island of Batan, where 

 it was found by Captain Belcher in great abundance, and 

 is the predominant snail of the locality. It is quite 

 distinct from 11. pulclierrima, which is restricted to a 

 limited area in Cagayan, a province of the neighbouring 

 island of Luzon. It is of a lighter and more homy sub- 

 stance, and has the lip less thickly reflected. 



Species 4. (Fig. a to d, Mus. Cuming.) 

 Helix zonifera. Hel. testa imperforatd, siibglobosd, 

 tenui, fulvd, plerumque castaneo-fasciatd, zonis variis 

 opacis lutescenti-albidis epidermidis ornatd; anfracti- 

 bus qualuor, convexis, mpremis depressis ; columelld 

 pland, redd, elongatd; aperturd lunato-rotundatd, in- 

 tus nitidd ; periitomate simplici, expanso, albo. 

 The zoned Helix. Shell imperforated, subglobose, 

 thin, fulvous, generally banded with chestnut, and 

 ornamented with various opake yellowish-white bands 

 of epidermis ; whorls four, convex, dcjiressed at the 

 upper part ; columella flattened, straight, elongated ; 

 aperture lunar-rounded, shining within ; lip simple, 

 expanded, white. 



SowERBY, Pfeifi"er, Pro. Zool. Soc. 1942, p. S5. 

 ffab. Island of Leyte, Samar, and Mindanao, Philippines; 

 Cuming. 



The colouring of this species, as may be seen in the 

 accompanjTng figures, is extremely variable ; but they 

 have all the same form, and are characterized by the same 

 idea of pattern. 



Species 40. (Mus. Cuming.) 



Helix LIGNAria. ITel. tesln imperforatd, tuiglobow- 

 depressd, solidd, lavigatd, purpureo-cwttaned, fasciis 

 variis epidermidis fusco-cinerea obductd; spird viz ele- 

 vatd, obtusd ; anfractibus quatuor ad quinqiie, rir coh- 

 vexiu.iculis, celeriter accrescenlibus, ultimo ad periphe- 

 riam subangulato ; columella perobliqud, lata, planatd, 

 purpureo-fuscd ; aperturd rotmxdato-lunari, intut al- 

 hidd ; periitomate subincrassato, brecissiiue rtfexo, 

 fusco-marginato. 



The wooden Helix. Shell imperforated, globosely de- 

 pressed, solid, smooth, purple-chestnut, covered with 

 various bands of brown-ash epidermis ; spire but 

 little raised, obtuse; whorls four to five in number, 

 scarcely convex, rapidly increasing, the last sll.' '. 

 angled at the periphor}' ; columella very oblique, ! r 

 flattened, purple-brown ; aperture rotundatcly lunar, 

 whitish within ; lip rather thickened, very shortly 

 reflected, edged with brown. 



Pfeiffer, Pro. Zool. Soc. 1846, p. 111. 



Hab. Surigao, Island of Mindanao, Philippines ; Cuming. 



This species is stouter and more depressed than tin- 

 preceding, and of a rich purple-chestnut colouring, more 

 thickly clothed with an epidermis, of which the band h< 1 .w 

 the sutures is intemipted in a very distinctive luai.i ■ r 

 mth bruised patches. 



April, 1851. 



