II E L I C I N A. 



specie 



(Mii>. Bi-it.) 



Helicina TltlDEXS. Hd. teiti'i iniitutd, aiiijiilatd, sujinl 

 tenuiter spiraliter sii-iatd, cnriiid sen-iitd metlio \ 

 cinctii ; spiid conicA, elevatd ; aperturd trigond, 

 coiitractd : labia externo medio afii/iilato, t^Kprti, 

 infrd, medioque acute uiiidenlalo ; /■ohi.imlld cum , 

 kibio externo conjliieiiti. 



The three-toothed Helicina. Shell niiiuilu, angular, 

 spirally finely striated above, belted in the middle 

 with a serrated keel ; spire conical, elevated ; j 

 aperture trigonal, contracted ; outer lip angular 

 in the niid.lle, sharply single-toothed ; columella 

 confluent with the outer lip. 



angular, ai)orlure snic 



thin, rellected. 

 Pfeifiki:. Zeitsehril't f. Mai 

 Hah. Haiti. 



int.) 



Mosd. /„.<ro-pur- 

 Hiidiiliiliin .■itriatd. 

 sii/ierne lateraliter convexd, midio .<i'rfato-r.nrin<itd ; 

 infrd rntundatd ; aperturd conlracld ; Inino cxiento 

 niho. ftupei-ni' depresso, supra infrdque unidentato. 



The waved Helicina. Shell globose, variegated with 

 purplish-brown, spirally wavily striated, laterally 

 convex above, with a serrated keel in the midille, 

 rounded below; aperture contrticted ; outer lip 

 white, depressed above, with a single tnoth abuve 

 and below. 



Pfeiefeu. Malak., Bl. viii. 



Iliih. Jamaica. 



Very closely connected with Helicina anreola, but 

 differing in having the spiral stria undulated. 



Species 127. (Mus. Brit.) 



Helicixa elegaxtula. Hel. pared. f\i:<ed, trorhi/aniii. 

 Icevi ; spird elevald, anfractilms ytialnor ant 

 quint/ite, aistinctis, infrd medium rotundatin, apire 

 acnminato ; anfractu ultiaiu .•^id/(/'j>re.<.<(i, ohtiitie 

 anijulato ; aperturd pared , .^uhtriijdud. labia cxtcrmi 

 tenui, refiexo. 



The eleuant little Helicixa. Shell >uKill, brown, 

 trochiform, smooth ; spire elevated, whorls four 

 or five, distinct, rounded below the middle, apex 

 acuminated ; last wliorl rather depressed, obtusely 



Species 12,S. (Mus. Brit.) 

 Helicixa trochlea. Hel. testd viinntd, trochifirmi. 



sulidepressd, medio arajvlatA, cnrinatd, SJiprd cari- 



nam spiraliter liratd, fiisco-nigrescenti fasciatd ; 



apice rubra ; aj>erturd .'subtrigond, labia externo 



tuniii. 

 The wixdlass Helicina. Shell minute, trochiform, 



subdepressed, angular, carinated in the middle. 



spirally ridged above the keel, banded with 



blackish-brown, apex red ; aperture subtrigonal, 



outer lip thill. 

 GocLn. Proc. Bost. Soc, 18-17, p. 202. 

 //'//-. Isl. Aurora. 



12 'J. 



rhifo 



trihv. 



etln 



(Mus. Brit.) 

 icina thicakixata. //(•/, tiMd pared, t. 

 luted, spiraliter liris cariniformibiis, qaa 

 Me(liani.-< iiiajoribus cincta ; spird elevatd 

 liiis cariiiatis ; aperturd intiis aure'i. 

 parvd, albd. labia externo alho, angiittto. 

 THUEE-KEELEi) Helicina. Shell Small, trochifonii. 

 yellowish, spirally girt with keel like ridges ot 

 which the three middle ones are the larger; spire 

 elevated, whorls keeled ; aperture golden within, 

 columella small, white, outer lip white, narrow. 

 EKiiv. Thes. Condi., 2iid Monogruph. species 7.">. 



Specii'S loO. (Mus. Brit.) 

 Helicina rubicunda. //<•/. te.<td troehl 



brown, acuminated, spirally closely ribbed, spire 

 elevated, mucronate, aperture subtrigonal, colu- 

 mella straight, narrow, acuminated, outer lip 

 thinly reflected. 



Gunplach. Pfeilfer, Malak., Bl. iv. 1857. 



Hab. Cuba. 



