HELICINA.— Plate XII. 



coso ; lahio externa albo, angusto, phmulalo, colu- 

 mella rectiusculd. 



The fat Helicina. Shell subglobose-trochiform, 

 spirally striated, white spotted with green, or 

 yellow spotted with red ; last whorl ventricose, 

 outer lip white, narrow, llattened, columella 

 rathei straight. 



Shuttlewortii. Diagnosis, N. Moll., iii. p. 42. 



Ilab. Haiti. 



More stout and ventricose than those of the same 



group previously described. 



Species 103. (Fig. a, h, Mus. Brit.) 



Helicina pulchella. Hel. testa trochiformi, angulatd, 

 spiraliler granoso-striatd ; spinl clevatd, aaiminatd, 

 luted, nibiv tcematd ; ultimo anfractu infni medium 

 anguluto, serrato-earinatd ; lahio externa expanso, 

 racliatin crenulato ; columella planidatd, cum 

 labium externum conjluenti. 



The beautiful Helicina. Shell trochiform, angular, 

 spirally granoso-striated ; spire elevated, acu- 

 minated, yellow banded with red ; last whorl 

 angular below the middle, serrato-cnrinated ; 

 outer lip expanded, radiately crenulated, columella 

 flattened, confluent with the outer lip. 



Gray. Zool. Joun., i. p. 64. 



Helicina scitula, Wood. 



Helicina Grayana, Pfeiffer. 



Helicina dilatata, Poey. 



Hab. Jamaica. 



A well-known beautifully coloured and sculptured 



species. 



Species 104. (Mus. Brit.) 



Helicina rotella. Hel. testa alba, compressd, angulatd; 

 spird depresso-conicd, ultimo anfractu obtuse Mi- 

 gulato ; labia externa paulo reflexo, in medio paulo 

 producto ; colurnelld parvd, angtistd, leviter an- 

 gulatd, cum labium externum conjluenti. 



The rotella Helicixa. Shell white, compressed, 

 angular ; spire depressed-conical, last whorl ob- 

 tusely angular ; outer lip a little reflected, a little 

 produced in the middle ; columella small, narrow, 

 slightly angular, confluent with the outer lip. 



Sowerbt. Thesaurus Conchyliorum. Helicina, 2nd 

 Monog., No. 205, fig. 358. 



Hab. New Hebrides. 



Species 105. (Mus. Brit.) 



Helicina gratiosa. Hel. tcstd angulatd, fused ; spird 

 canicd, elevatd, anfractibus convexihsculis, ultimo 

 anfractu medio obtuse angulato, infra anguhim con- 

 vexiusculo, past columellam spiraliter subexcavata ; 

 apei-turd intiis i-uhro marginatd ; labia externo 

 angiisto, reflexo ; colurnelld parvd, aculcatd. 



The grateful Helicina. Shell angular, brown ; spire 

 conical, elevated, whorls rather convex, last 

 whorl obtusely angular in the middle, rather con- 

 vex, spirally a little excavated behind the colu- 

 mella ; aperture red-bordered within; outer lip 

 narrow, reflected ; columella small, aculeated. 



Pfeiffer. Proc. Zool. Soc, 1856. 



Hid). Admiralty Island. 



Species 106. (Mus. Brit.) 



Helicina costata. Hel. testd (jloboso-acnmimitd, soliih'i, 

 albd, spiraliter striata ; spird elevatd, acuminaU'i ; 

 idtimo anfractu rotunda, ventricose ; aperturd parvd. 

 intus luted, labia externa incrassato, superne 

 declivi ; columelld trigond, subplanulatd. 



The ribbed Helicina. Shell globose-acuminated, 

 solid, white, spirally striated ; spire elevated, 

 acuminated ; last whorl rounded, ventricose ; 

 aperture small, yellow within, outer lip thickened, 

 sloped above ; columella trigonal, a little flat- 

 tened. 



GR.A.Y. Zool. Journ., i. p. 67, t. 6, fig. 8. 



Hah. Jamaica. 



Species 107. (JIus. Brit.) 



Helicina semilir.\ta. Hel. tcstd subglohom, alhd, 

 solidd,supcrne spiraliter crehri-liratd, infrdlivvigatd; 

 spird aaiminatd, anfractibus convexiiisculis ; ultimo 

 anfractu ventricose, medio angulato, carinato ; labia 

 externa planulata, paidb expanso ; colurnelld planu- 

 latd, angustd, cum labium externum canflucnti. 



The half-ridged Helicina. Shell subglobose, white, 

 solid, spirally closely-ridged above, smooth be- 

 neath ; spire acuminated, whorls rather convex ; 

 last whorl ventricose, angidar in the middle, 

 keeled ; outer lip flattened, a little expanded ; 

 columella flattened, narrow, confluent with the 

 outer lip. 



Pfeiffer. Proc. Zool. Soc, 1848. 



Hah. Venezuela. 



