II E L I C I N A, 



Plate XXI. 



Species 181. (Mus. Brit.) 



IIelicisa Noiti-oi.KEXsis. Ilel. testa palliiV- Jhu-i'i, 

 angustatii, suhdepressd ; infra siniialim iiiii/i/tcato ; 

 spird conicd, anfractibua paucis, parvis ; ultimo 

 anfractu coinpresso, lato, rotnndalini ani/u/ato ; 

 catio centrali e.rpansn, columelld trigond in dent mi 

 acutum dcsinenti ; labia extcrno supra dcpresso, 

 medio rolundiitim ej-panso, infra sinualim plicalo. 



The Norfolk Isl.vxd IIklicina. Shell pale yellow, 

 narrow, a little depres.sed, with a sinuous pluit 

 below; spire conical, whorls few, small; last 

 whorl conii)re.sscd, broad, roundly angular ; 

 ventral callus e.xpanded, columella trii;onal, 

 ending in a sharp tooth ; outer lip depressed 

 above, roundly expanded in the middle, sinuously 

 plaited below. 



Pfeifker. Proc. Zool. Soc, l.slT. 



Hah. Norfolk Island. 



Very curiously contracted and plaited at the lower 

 part. 



Species 182. (Fig. a, b, Mus. Brit.) 



Helicina cin'Ctilla. Ifel. tcstd siibtrochiformi, t.'tuii, 

 angulatd, alba, anfractibus apicalibus tmniatis, vtl 

 supra unguium rosed, infrd aurantid, ad angidum 

 sicturamqite albo angustH fasciatd ; spird conicd, 

 elevatd ; ultimo anfractu siibcarinato ; labio cxterno 

 planidato, rejlexo. 



The little iuclt Helicina. Shell rather trochiform, 

 thin, angular, white, with the apical whorls banded, 

 or pink above the angle and orange beneath with a 

 narrow white band at the angle and suture ; spire 

 conical, elevated ; outer lip flattened, reflected. 



Shuttlewortii. ? 



llab. Cordova. 



The spire is more elevated than in the greater part 



of these angular species. 



Species 183. (Fig. a, b, IVIus. Brit.) 

 Helicina occidentalis. Ilel. tesid depressd, angulatd, 

 laid, pallide aurantid, spiraliler fasciis diwbus 



angusli.<, nigriranlilms, siipn) rl iiifnt angalum. vH 

 fisi-iis lalia rubo-centibus ciiu-l,) : spin'i (hprcsst:- 

 canicd; uiliiiio anfrartu ad iiintinm rariuato: 

 aperturd ^Hhrhomhoided, oohimell.', hreri, rallo 

 rrutndl j.,,rro, l.d.lo ,,rl. mo hitn^ iilaiiulalo, rep.ro, 

 ad molnun au.,„l.,i;,i, j.n.duelo. 



■: WE.sTKi;.s' IIixiCiXA. Shell depressed, angular, 

 broad, pale orange, spirally girt with two narrow 

 blackish bands above and below the angle, or 

 broad reddish bands; spire dcjivessed, conical! 

 last whorl kerled in the middle ; aperture rather 

 rhondioidal, columella short, ventral callus small, 

 oiUer lip broad ilaltened, angul.-irly produced in 

 the middle. 



Loixc. Trans. Linn. Soe., p. 333. 



Hab. 



ISl, 



arby.) 



llri 



(Mus. .'.(ol 



s. //(■/. listd riiinjiressd, Jlavidd. 

 obtuse angulatd, spird depressd, obtusd ; colmnelld 

 parvd, trigond ; labia externa angusto, rotundo. 

 The rather oval Helicina. Shell compressed yel- 

 lowish, obtusely angular, spire depressed, obtuse ; 

 columella small, trigonal, outer lip narrow rounded. 

 SowERiiY. Monog. Helicina, Species 198, fig. 370. 

 llab. Jamaica. 



Species IS,"). (Mus. Brit.) 

 Helicina Zo.e. Ilel. tiMa parvd, angulatd, rubescenti ; 



spird elevatd, conird, ultimo anfractu subangulato ; 



callo rentrali tmnidn, expanso, avrantio, rotundo ; 



columelld brcvi, cum labium externum confuenti, 



aperturd rhomboided, intus fused, labia externa albo, 



tenui, rotundo. 

 The ZilE Helicina. Shell small, angular, reddish ; 



spire elevated, conical, last whorl rather angular ; 



ventral callus tumid, expanded, orange, rounded ; 



columella short, confluent with the outer lip, 



aperture rhomboidal, brown within, outer lip 



white, thin, rounded. 

 Pfeiffeb. IMS. 

 Hab. Cuba. 



October, 1873. 



