II 



the channel ; channel rather long, moderately wide ; peritreme sub- 

 quadrangular. 



Length, ^^ of an inch ; width, ^'^ of an inch. 



Hab. Africa ; West Indies. Cab. Metcalfe, Cuming, Gaskoin, &c. 



IG. CoLUMBELLA CONSPERSA. Tesftt oblongo-ovatu, pyrami- 

 dalis, pallide hrunnea, maculis anticis, albi-opacis, irreyulari- 

 bus ; fascits tribus albi-opacis, brunneo interrvptis, duahus 

 posticis ab aperturd ad apicem continvis ; spird acuminata an- 

 fractibiis novem vel decern convexiuscidis ; ajierturu recta, latius- 

 culd ; labio externa ad marginem acuta, margine externa lata 

 prominente, intus denticulis quatuor quinque vel sex parvis ; 

 labio interna Icevi, nitido, intus varice parvo denticulata, extus 

 varice subpraminente ad laterem canalis extenso ; striis tenui- 

 bus per anticam partem dorsi cantinuis ; canali longiusculo, an- 

 gusta, leviter recurva ; peritremate subqxiadrangida, lilacina. 

 Shell oblong-ovate, pyramidal, of a dull pale-brown colour, with 

 opake white, irregular markings on the anterior half of the last whorl ; 

 three opake white bands ; the two anterior, interrupted and edged 

 posteriorly with dark brown coloration, traverse the last whorl ; the 

 second, arising from the middle of the outer lip in narrow streaks, 

 continues along the anterior edge of the volutions close to the suture, 

 on to the apex ; the third arises at the posterior part of the outer 

 lip, sometimes in conjoined nodules, edged anteriorly and interrupted 

 by a dark brown colour, passes over the dorsum and continues in 

 irregularly broad, even streaks on the posterior margin of the whorls 

 on to the apex. [These characters are marked in fine specimens, 

 but are sometimes rendered less conspicuous by irregularity in 

 the opake white deposition.] Spire acuminated, constituting rather 

 more than one-half the length of the shell ; volutions nine to ten, 

 slightly convex ; aperture straight, moderately wide ; outer lip sharp 

 at the edge, converges abruptly to form the channel, a broad promi- 

 nent margin externally, within are four, five, or six denticulations ; 

 inner lip smooth and shining, within is a little ridge forming about 

 six nodules or teeth, and at the outer edge is a rather strong varix 

 extending on to the side of the channel, and from the outer side of 

 which varix fine striae traverse the anterior portion of the dorsum ; 

 channel rather long and narrow, slightly recurved ; peritreme rather 

 quadrangular, and of a lilac colour. 



Length, ^^ of an inch ; width, ^^^ of an inch. 

 Hab. ■ ? Cab. Gaskoin. 



1 7. CoLUMBELLA FORMOSA. Tcsta oMongo-ovata, Icsvis, nitida, 

 colore Jlari-lactea induta ; fasciis duahus maculis albicantibus 

 brunneisque interrvptis ; spird acuminatd, ad dimidium longi- 

 tudinis testes cequali ; anfractibus septeni vel octo convexiuscu- 

 lis, suturd subpraminente ; aperturd latiusculd et breviusculd ; 

 labia externa Icevi tenui, interna Itevi ; canali lata. 



Shell oblong-ovate, smooth and shining, of a light delicate cream 

 colour, with two interrupted bands of opake white and brown mark- 



