Zoological Socieft/. j^7^ 



Length, i^ij^o of a» i»cli ; width, -^^^ of an inch. 



Hub. Africa ; West Indies. Cab. iNIetcalfe, Cuming, Gaskoin, &c. 



16. CoLUMBELLA CONSPERSA. Testa ohiongo-ovata, pyrami- 

 dalis, pallide brumiea, maculis anticis, albi-opacis, irregulari- 

 bns ; fasciis tribus albi-opacis, brunneo interruptis, duabus 

 posticis ab aperturd ad apicem continvis ; spird acuminatd an- 

 fractibus novetn vel decern convexiusctdis; aperturd recta, latius- 

 culd ; labia externa ad marginem acuto, margine externo lato 

 prominente, intus denticulis (piatuor quinque vel sex parvis ; 

 labia interna Icevi, nitido, intus varice parvo denticidato, extus 

 varice subprominente ad latus canalis extenso ; striis tenui- 

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

 gusto, leviter recurve ; peritremate subqxiadrangulo, lilacino. 



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

 Hab. • ? Cab. Gaskoin. 



17. CoLUMBELLA FORMOSA. Testa oblongo-ovata, leevis, nitida, 

 colore jlori -I act eo induta ; fasciis duabus macidis cdbicantibus 

 brunneisque interruptis ; spird acuminatd, ad dimidium longi- 

 tudinis testa eequali ; anfractibus sept em vel octo convexiuscu- 

 lis, suturd subprominente ; aperturd latiuscidd et breviusculd ; 

 labia externo Icevi tenui, interna Icevi ; canali lato. 



Length, -f^^i of an inch ; width, -^^^ of an inch. 

 Hab. ? Cab. Gaskoin. 



18. CoLUMBELi.A HiRUNDO. Testa ovato-pyramidalis, Icevis, 

 nitens, pallida, strigis jmnctisque bninneis leviter maculata ; 

 spird 7nucronatd, dinndium longitudinis testce cequante ; an- 

 fractibus novem vel decern planis ; aperturd latiusculd ; labia 



externo crasso albo semicirculari, dentibus duabus vel tribus 

 latis posticis internis, margine externo crasso albo; labio in- 

 terna Icevi, subspirali, dente solitario majuscido ad posticam 

 partem; canali longo, latiusculo, recurvo, rostris jirominenti- 

 bus, externo divergente quasi fur cat o id in formd caudce hirun- 

 dinis. 



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



Hab. Per the ' Saniarang.' Cab. Gaskoin. 



This species is of the stamp of Col. bicanalifera of Sowerby, Proc. 

 ZooL Soc. part ii. page 113 ; Sowerby's Thesaurus, fig. 144. 



19. CoLUMBELLA Californi ANA. Tcsta oblongo-ovata, sub- 

 pyramidalis, Icevis, nitens, brunnea, vel brunnea variabilis, ali- 

 quando lineis tenuibus, fortioribus, aut latiusculis irregulari- 

 bus ; spird acuminatd dimidium testce subcequante ; anfracti- 

 bus septem convexis ; aj)erturd latd subquadrangidari ; labio 

 externo tenuiusculo intus denticidato, labio interna leviter den- 

 ticidato ; dorso antice transversim striata; peritremate pur-- 

 jjureo-nigricante ; canali brevi. 



Length, -/^"o of an inch ; width, -^-^^ of an inch. 

 Hab. Sandeago, ('alifornia. Cab. Cuming, Gaskoin. 



20. CoLXJMBELLA loDOSTOMA. Tcsta oblongo-ovuta, irregula- 

 riter brunnea; spird acuminatd, apice cceruleo-brunneo ; an- 



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