H E L I C I N A. 



Tlate XXVIII. 



Species 246. (Fig. a b. <•, Mu.^. Brit.) 



HeLICIN.\ ACUTISSIMA. lid. Usti'i 6uU\micd, pliis- 

 minilsve depressd, aaUissimc angidatd, tenui, aure- 

 olatd, rubro nunnunquam tceniati ; spini conicd, 

 ultimo anfractu medio vcl infrd medium acute cari- 

 natd ; apcrturd supcrni depressd, labia exlenio 

 rejlcxo, plamdato, ad anijulum medianiim in rostrum 

 producto. 



The vkuy suaup IIelicika. Shell rather conical, more 

 or less depressed, very acutely angular, thin, 

 golden, sometimes banded with red; spire conical, 

 last whorl sharply keeled at the middle or below; 

 aperture depressed above, outer lip rellrcled, 

 flattened, produced into a beak at the middle 

 angle. 



SowEuiiY. Proc. Zool. Soc., 1.S12. 



Hab. Philippines. 



Species 247. (Mus. Brit.) 



IIelicina pallida. Jhl. testd fidvd, C7-assiiismld, 

 depresso-awjulatd ; spird depresso-conicd ; ultima 

 anfractu medio carinato, infrd carinam coiire.ro ; 

 callo ventrali parvo, rotundato ; aperturd subipiad- 

 ratd, labia exteriio supemU subarcuato, media anrju- 

 lato, infra rotundato. 



The pale IIelicina. Shell fulvous, rather thick, de- 

 pressed angular ; spire depressed-conical ; last 

 whorl keeled in the middle, convex below the 

 keel ; ventral callus small, rounded ; aperture 

 rather square, outer lip a little arched above, 

 middle angular, rounded below. 



Gould. Proc. Bost. Soc, 1847. 



Hab. Fiji Islands. 



Species 24<S. (Mus. Brit.) 



IIelicina lens. Eel. testd minutd, ntfefcens, depressd. 

 lenticulari angulatd ; sjiird convexd ; ultimo an- 



fractu medio obtuse carinato infrd, medium convexo ; 

 callii ventrali rotundato, columella trigond ; aperturd 

 transverse oblongd, superne depressd. 



The lens IIelicina. Shell minute, reddish, depressed 

 lenticidar, angular ; spire convex ; last whorl 

 obtusely keeled in the middle, convex below the 

 middle ; ventral callus rounded ; columella tri- 

 gonal ; aperture transversely ol)lung, depressed 

 above. 



Lea. Obs. 1, p. IGl. 



Ilab. Fiji Islands. 



Species 249. (Mus. Brit.) 



IIelicixa unifasciata. Hel. testd depressd, sublenti- 

 culari, spiraliter striatd, aq-ualiter suprd infrd.que 

 angalum convexd, suprd anijulum rubro -nnif as - 

 ciiitd ; aperturd transverse oblonijd, labio externo 

 infrd angidum valide arcuato, suprd depresso- 

 arcuato. 



The single-banded IIelicina. Shell depressed, len- 

 ticular, spirally striated, eijually convex above 

 and below t'.:e angle, with a single red band above 

 the angle ; aperture transversely oblong, outer lip 

 strongly arched below the angle, depressed-arched 

 above. 



Gray. Zoological Journal, vol. i. p. CO. 



Ilab. ? 



Species 250. (Mus. Brit.) 



Helicina aRENIcola. Hel. testa globosd, soUdd, albd, 

 spiraliter striatd, medio anfractvum carinatd ; spird 

 convexo-depressd ; apei'turd subrotundd, .:olnmelld 

 aculeatd, labio externa rotunda, reflexo ; callo eeu- 

 triili tenui. 



The .sand-dwelling IIelicina. Shell globo.se, solid, 

 white, spirally striated, keeled in the middle of 

 the whorls ; spire convex depressed ; aperture 



December, 1873. 



