19* 



The exhibitIori was resumed of the coUection ofShells formed by 

 Mr. Cuming on the Western coast of South America, and among 

 the islands of the Southern Pacific Ocean. The new species were 

 accompanied, as on the previous occasions, by descriptions from the 

 pens of Mr. Broderip and Mr. G. B. Sovverby. 



Genus Mlrex. 



MuREX BUXEUS. Mur. testd stibfusiformi, multifariam undulusO' 

 varicosa, transversim str'uitd , Juscd albo transversim lineatd ; 

 npertiird albd ; labro intiis denticulato : long. 1-|, lat. -^ poli. 



Hab. ad Iquiqui. 



Found on a sandy bottom at the depth of eighteen fathonos.-r- 

 W. J. B. 



MuREx DiPSACUS. Mur. testd fusiformi, multifariam varicosd, 

 varicibus subJro7identibus, transversim costatd, quasi cancellatd, 

 albdfusco sulifasciatu ; spird productd, canali mediocri : long. \, 

 lat. Ą poli. 



Hab. ad Sanctam Elenam, 



From a rocky bottom at the depth of twelve fathoms. — W. J. B. 



MuREX PALLIDUS. Mur. tc&td Jiisiformi, albd, novemfariam va- 

 ricosd, costis transversis Jreųuentibus et lineis longitudinalibus 

 creberrimis cancellatd į canali valde apertd : long. -^y lat. -^ 

 poli. 



Hab. ad Insulas Falkland dietas.— W. J. B. 



Genus Ranella. 



Ranella pyramidalis. Ran. testd elongato-pyramidali, valdh 

 compressd, albd, transversim costatd, anfractibus suturam versus 

 coronatis ; lined longitudinali interstitiali iitrinque solitarid, 

 elevatd; spird valde productd : long. į, lat. 4^ poli. 



Hab. ad Uliteara et Panamam. 



The interstitial longitudinal line which traverses the whole length 

 of the shell, both on the upper and under side?, raay be almost 

 termed a varix. 



Found on the reefs. — W. J. B. 



Ranella pusilla. Ran. testd pyramidali, albd, granulosd: 

 long. -iV, Int' T2- poli. 



Hab. inOceano Pacifico (Lord Hood's Island). 



Found on the reefs. — W. J. B. 



Genus Cardita. 



Cardita TRICOLOR. Card. testd ovato-rhombed, longitudine al- 

 titudinem superaiite, radiatim costatd, albidd,jasciisj'uscis longi- 

 tudinaliter notatd ; inargine dorsali Į)Ostico, latereque antico 

 brevi, aurantiacis ; latere postico longiore ; costis, anticis prcę- 

 sertim, subgranosis : long. 1'5, lat. 1, alt. 1"1 poli. 



Hab. in America Centrali. 



Found among sand and mud, at a depth of ten fathoms, in the 

 Bay of Guayaquil. — G. B. S. 



