II i: L I C I X A. 



Species')!. (Mus. Brit.) 



IIelicina c.m:ix,\t.\. Hi I. tnta jutrvd, stramimn, su- 

 periii- clifre^so-coiiio'i, iiijiii ItHlii-iiUiri : njiini 

 parvd ; ultimo anj'riutu medio c<iriiinlo ; (ijitrtunt 

 trapezoidtd ; labia exteriio alho, rotitmlo, medio 

 nnijulato, cum coluinelhi amjUunti. 



The c.vhix.med IIelicin.\. Slifll sni;ill, stniw-cDlourcd, 

 depressed-conical above, ientieuhir tuMieatli ; spire 

 small ; last wliorl keeled in the middle ; aperture 

 trapezoidal ; outer lip wliite, rounded, an^'ular in 

 the middle, conlluent with the columella. 



I)'0kii1(..nv. Moll. Anier. Merid., p. 30O, pi. 10, GO-0. 



//eliciniii Fi.^cltfriaua, Montrougier. 



Jlab. New Granada. 



Species 52. (Mus. Brit,) 



HkLICINA TliOCIIIFORMIS. //«/. tt'Sld COIlicd, l<efi, (JMm/, 



.</)iV(J clt'Vdtd, acumiiintij, atij'iiictibiis plaiiiiliilis ; 

 ultimo anfractu infni coiiiejo, midin airimtlo ; 

 cnrind (diui, acuta ; ajierlurd purvd, labio ertcrno 

 alho, rejhxo, supra sinuatim dtpresfo, ad medium 

 producto, elei-alo ; columella pared, olliiiut'i, 

 acukatd. 



The tkochifokm IIelicina. Shell conical, smooth, 

 j^olden, spire elevated, acuminated, whorls flat ; 

 last whorl convex below, keeled in the middle; 

 keel white, sharp ; aperture small, outer lip white, 

 reflected, sinuously de]iressed above, produced at 

 the middle, elevated ; columella small, oblique, 

 aculeated. 



SowERBV. Proc. Zool. S<K\, 1812. 



llab. Isle of Negroes, Philippines. 



The form of the lip difiers from th.it of the most 

 laterally coin])rossed variety of Ililicina uculissima, 

 which the shell otherwise slightly resembles. 



Species 53. (Fig. a, h, Mus. Brit.) 



Helicina rhodostoxa. Ilel. testd sup-d infrdqve len- 

 ticulari, medio acute carinatd, albd vel j'ulvd, 



April 



margine ajurlurce ruhro ; spirit hrevi, obliisi- i-onin'i, 

 aperturd suli(piadraid, columelld .^u/ienii- rvtmidiilim 

 calloM, infra in ."/liiiiiin <triitissim(nit jinidiirfa ,• 

 labiii exterito planulatini rrJUxn, medio acute aii- 

 gulato. 



The piNK-MoiTMED IIiaiciNA. Shell lenticular above 

 and below, sharjily keeled in the middle, white 

 or fulvous, mouth red- margined ; spire short, 

 obtusely conical, aperture suVjquadnite, columella 

 roundly callous, reflected above, produced into a 

 ver)' sharp spire below ; outer lip flatly reflected, 

 sharply angular in the n)iddle. 



Gray. Zuol. Journ., vol. i. p. OS. 



Uab. ? 



Species 51. (Fig. -(, b. Mus. lirit.) 



IIelicixa coscEN'Ti!i<A. //('/. tcMd pnllidc Mramined, 

 vel subrosed, obscure notatd ; superni acute conicd, 

 medio acute carinatd, infra convexd, omnino 

 spiraliter striata ; aperturd subrhomboided, lubio 

 externa medio rotundato, columelld pared, arciiatd. 



TllK CONCE.VTHIC IIelicixa. shell jiali; straw, rose- 

 tinted, obscurely marked ; acutely conical .above, 

 acutely keeled in the middle, convex below, all 

 over si)irally striated ; aperture subrhoniboidal, 

 outer lip rounded in the middle, columella small, 

 arched. 



Pfeiffer. Proc. Zool. Soc, 1818. 



Ilab. Venezuela. 



Species 55. (Fig. a, h, Mus. Brit.) 



IIelicixa spinifera. Ilel. testa tenui, ventricosd, su- 

 perni conicd, iiifrd convexd, medio acute cari- 

 natd, aured, infra carinam rubra unilineatd, vel 

 purpurea oblique striyatd, maculis rubris ad su- 

 turam carinamque ornatd ; columelld pared, in 

 spinam acutam praductd ; labia externa albo, re- 

 fkxo, ad medium angulato, producto. 



The spinifekous Helici^ja. Shell thin, ventricose, 



1873. 



