HELIX. 



Plate CLXXXVI. 



Species 1287. (Mus. Cuming.) 



Helix luteo-counea. Ilel. UhIu. mbainpUler el pro- 

 funde umiilicatd, depresno-orbiculari, luteo-comed, su- 

 pra Htriin urcitalk et npiralibu* decii.tmtd, hifra lari- 

 gata, niteiite ; tpird plaiio-coiirej-d, sitliird siibimprtn- 

 sd; anfraclibm qHinque,rolundalis ; apertiird liiiiato- 

 circulari, labro simplici. 



The yellow-hokny IIeli.v. Shell rather largely and 

 deeply umbilicated, depressly orbicular, yellowish- 

 homy, decussated above with spiral and arched slriie, 

 smooth and shining below ; spire flatly convex, with 

 the sutures rather impressed ; whorls five, rounded ; 

 aperture lunar-circular, lip simple. 



Pfeiffer, Pro. Zool. Soc. 1851. 



Eab. Navigators' Islands. 



A rather solid yellowish-homy species, of Ci/clostoma-\ike 

 form, smooth and shining below, silky, decussated above. 



Species 1288. (JIus. Cuming.) 



Helix bullacea. Ilel. lesld subamplUer et profundi 

 umbiUcald, siibdepresso-orbicidan, cineraticente-corned, 

 supra costellis arcuaik drikqtie spiralibiis deciissatd, 

 infra laviyatd, nitetUe ; spird decUci-convexd ; anfrac- 

 tiiics qiiaiuor, convexls, ad peripheriani obaoleie rotun- 

 dato-carinatis ; aperturd lunato-circulari, lahro aim- 

 plici. 



The bubble-like Helix. Shell rather largely and 

 deeply umbilicated, rather depressly orbicular, ash- 

 horny, above decussated with fine arched ribs and 

 spiral stria;, below smooth and shining ; spire slant- 

 ingly convex ; whorls four, convex, obsoletely rotun- 

 dately keeled at the periphery ; aperture lunar-circu- 

 lar, lip simple. 



Pfeiffer, Pro. Zool. Soc. 1854. 



Hab. Moreton Bay, Australia ; Strange. 



Very like the preceding, though well distinguished by 

 the more slanting-convex form of the spire and its rib-like 

 sculpture. 



Species 1289. (Mus. Cuming.) 



Helix dermatina. £[el. teatd imperforald, mbconoiJed, 

 semipeUucido-cortied, oblique siibirreyularilrr plica/o- 

 driald, liris Ceiiuibua spiralibiis deciissald, sordidi oli- 



July, 



raced, coniilis duabiis eastaneis angustts, quanini iiife- 

 riore laliure ciiigida/d ; spird coiiicd ; anfractibiin 

 qiiiiique, inflatis, ultimo ad peripheriam carinato ; 

 nperlurd fere circulari, subverticali, labro teniii re- 

 flejco, castaneo-marginato. 



The leather Helix. Shell imperforated, subconoid, 

 scmitransparent horny, obli(|ucly somewhat irregu- 

 larly plicately striated, decussated with thin spiral 

 ridges, dull olive, encircled with two narrow chestnut 

 zones, of which the lower is the broader ; spire coni- 

 cal ; whorls five, inflated, ttie last keeled at the peri- 

 phery ; aperture nearly circular, subvertical, lip thinly 

 reflected, chestnut-edged. 



Shcttlewortu (Mus. Cuming). 



Hab. Island of Porto Rico, West Indies ; Blauncr. 



A verj' characteristic subtransparcnt trochiform ITelix, 



encircled with two thread-like zones, of which the lower is 



the broader. 



Fig. 1290. (Mus. Cuming.) 

 This shcU, collected by Mr. Strange at Moreton Bay, 

 AustraUa, appears to be identical with //. Iiidica, described 

 at Plate LXXXIII. Fig. 448. 



Species 1291. (Mus. Cuming.) 



Helix CERARIA. ffel. testa vix umhilicatd, depresso-or- 

 biculari, luteo-comed, supra striis pliciformibus arcva- 

 tis sulcisque spiralihus decussatd, infra iiilente ; an- 

 fractibus quatuor, plano-concexis, ultimo ad periplir- 

 riam carinato ; aperturd oblique luaato-circulari, labro 

 simptici. 



The waxy Helix. Shell scarcely umbilicated, depressly 

 orbicular, yellowish-homy, decussated with arched 

 plait-like striic and spiral grooves, below shining ; 

 whorls four, flatly convex, the last keeled at the peri- 

 phery ; aperture obliquely lunar-circular, lip simple. 



Benson (.Mus. Cuming). 



Hab. Ceylon ; Thwaites. 



Ilesembling //. luleo-conira and bullacea in general form 

 and texture, but the shell is mure inflated ami the sculpture 

 has a more wrinkled character. 



Sjjccics 1292. (Mus. Cuming.) 

 Helix foutissima. Ilel. testa umbilicald, d<-pres*o-or- 

 1854. 



