119 



Hab. ad Insulas Polynesias. (Annaa, or Chain Island, and Lord 

 Hood's Island.) 



CoLUMBELLA MAJOR. Col. testd ovūtd, medlo gibbosd, castaned 



albido punctulatd ; spird breviusculd, pyramidali, acuminatd ; 



anfractibus 6 — 7, Itevigatis, ultimo viaiimo, svperne rotundato- 



turgido, infriL spiraliter siilcato ; aperturd elongatd, flexuosd, albd, 



superiie angulatd ; labio exter7io superrih obtuse angulato, albo, 



intus denticulato ; labio columellari superne caUifero, infriL pli- 



cttto-rugoso : long. \-^tx, lat. ^V poli. 



Hab. sub lapidibus ad oras Americae Meridionalis. (Isle of Muerte.) 



This species has long been knovvn, and has commonly been call- 



ed Col. Strombiformis. It does not, however, agree with Lamarck's 



description of that shell, and Mr. Sovverby possesses specimens of 



another vvhich corresponds exactly with it. 



CoLUMBELLA PRocERA. Col. tcstd oblongo-pyramidūli, medio ven- 

 tricosd, ccerulescenti-albidd, fusco punctatd et maculatd ; spird 

 gradatim acuminatd ; anfractibus 8 — 9, longitudinaliter costel- 

 latis ; superioribus decussatis ; medianis subtuberculiferis ; ul- 

 timo medio lecvigato, infrči "spiraliter sulcato ; aperturd oblongd, 

 superne acuminatd, subtils in caiialejn breviusculam desinente ; 

 labio externo intus denticulato ; columelld arcuatd, lavi : long. 

 2tV. lat. -^jy poli. 

 Hab. ad Panamam. 



This species is reraarkable for its gigantic size. It raust be placed 

 with the ColumbellcB, although not precisely according with the cha- 

 racter given of that genus by Laniarck ; for it is more nearly related to 

 them than to any other genus. A single specimen only was found. 



CoLUMBELLA PYGM^A. Col. tcstd ovato-oblo7igd, pttllescente ; 

 spird acuminatd ; anfractibus 6 ; superioribus 5 longitudinaliter 

 costatis, fascid interruptd nigrd ; ultimo superne longitudinaliter 

 costato, infru spiraliter sulcato, f asciis duabus interruptis nigris ; 

 aperturd latiusculd ; labii extemi margine superne emarginatd : 

 long. -/tt, lat. ^V poU. 



Hab. ad Sanctam Elenam. 



Found on dead shells in sandy mud, at a depth of ten fathoms, 



CoLUMBELLA UNicoLOR. Col. testu ovatd, mcdio venti-icosd, cas- 

 taned; anfractibus 5, l<evibus ; suturd profundiusculd ; aper- 

 turd latiusculd, ad basin subeffusd ; canali brevissimd ; labio ex- 

 terno extils subincrassato, intiis denticulis obsoletiusculis nonnullis : 

 long. -1*0-, lat. -rV poli. 



Hab. ad Insulas Gallapagos. (Hood's Island.) 



CoLUMBELLA VERSicoLOR. Col. testd ovatd, mcdio ventricosd, pal- 

 lidd coloribus variis pictd ; spird acuminatd ; anfractibus 6, su- 

 perne rotundafo-angulatis ; suturd profundd ; aperturd supenih 

 angulosd ; peritremate intus denticulato : long. .^, lat. -^ poli. 



Hab. ad Insulas Polynesiae. (Annaa, or Chain Island.) 



