113 



June 12, 1832. 

 Dr. Marshall Hall in the Chair. 



The exhibition was resumed of the new species of Shells oollected 

 bv Mr. Cuming on the western coast of South America and among 

 the islands of the South Pacific Ocean. 



The whole of the new species, thirty-nine in number, of the 



Genus Columbella 

 contained in the collection, were iUusirated by Mr. G. B. Sowerby. 

 Thev are as follow : 



COLUMBELLA PXJLCHERRIMA. Col. testii OVatd, Sph'd Subuhtd ; Otl- 



fractibus 9, primo minimo, alio, 2do, Stio, Ato et 5to nigro-ru- 



fescentibus, politis ; Gto, 7mo, et Svo co7icoloribvs, spimliter 



sulcatis ; ultimo ventricoso, longitudinaliter rugoso, et spiraliter 



sulcata, (libido, sulcis brunneis ; labia externa incrassato ; peri- 



tremate polito, intiis superne emurginata, infrtl denticulato ; labia 



interna tenui, polito ; canali recurvd : long. 1, lat. ^poll. 



Hab. ad oras Americae Centralis. (Gulf of Dulce.) 



A single specimen was found in ten fathoms, on a sandy muddy floor. 



CoLUMBELLA Harpiformis. Col. testd ovata-subtrigand, nigra, 

 ulbido mamlntd, epidermide tenui fulvd indutd ; spird brevi ; 

 anfractibus 6-7, marginibvs crenulatis, ultima triganali, longi- 

 tudinaliter costato ; aperturd elongatd, superne in canalem elon- 

 gatam productd ; labia externa incrassato, inflexa, intiis denticu- 

 lato ; canali subrecurvd : long. ^, lat. ^\ poll. 



Hab. in Sinu Panamfe. 



Found on dead shells in ten fathoms. 



CoLUMBELLA BicANALiFERA. Col. tcstd ovato-pyramidaH, apice 

 acuta, basi spiraliter sulcata ; anfractibus 7, superiaribus longi- 

 tudinaliter rugosis, pallescentibus, fusco-variis ; ultimo pal- 

 lido, fusco strigata, strigis prope suturas satnratiaribus ; aperturd 

 oblongd, in canalem superne decurrente ; labia externa iticrassato, 

 reflexa, subflexuoso, superne acuminata • long. 4-^, lat. ^V poU. 



Hab. ad Insulas Gallapagos. 



Dredged in sandy mud at a depth often fathoms. 



CoLUMBELLA SPURCA. Col. tcstd oblongd, castaned, albido maculatd 

 et guttatd ; spird acuminata; anfractibus 1 , superne angulosis, 

 ultima ventricoso, infra spiraliter sulcata ; aperturd oblongd, in- 

 tiis violascente, superne angulatd; labia externa flexuasa, sub- 

 incrassata, intus denticulato ; columelld infrii unituberculatd ; 

 labii interni margine ad basin denticulatd : long. 1 ,'-V. lat. -^poll. 



Hab. sub lapidibus ad oras Peruvianas. (Inner Lobos Island.) 



