Hab. ad Poruviani. (Payta.) 



The transverse scaly sirice are so arranged as to present three 

 and sometimes four smaller interstitial ones between the more 

 elevated. The scales on the stria are suberect, and very numerous 

 and minute. The abrupt descent from the angle to the suture 

 gives the whorls, more especially the last, a coronated appearance. 

 Found in sandy mud, at the depth of six fathoms. — W. J, B. 



MuREX Margariticola. Mur. testa ovato-acutd, multifariam 

 subvaricosa, aspero-rugosa, nigricanfe ; aperturd albido-purpuj-ed , 

 coliimelld cremdatd, Inhro intiis dcntato ; canali apertd, suhrc- 

 curvd: long. 1|, lat. -^-^ poll. 



Hab. in Oceano Pacifico, (Lord Hood's Island,) Mekagrince mat- 

 garitifera; adhaerens. — W. J. B. 



MuREX Lappa. Mur. testd subrhomboided, albd, nodulis acutis, 

 spinulisque horridd, anfractu basali spinis longioribus coronatd ; 

 labro crenulato intiis altc striata, striis dlstantibus ; umbilico 

 magna; spird product d : long. 1^, lat. ^ poll. 



Hab. ad Sanctam Elenam. 



Found on a rocky bed at the depth of twelve fathoms. — W.J. B. 



Genus Typhis, De Montfort. 



De Montfort, after referring to Mtcrex 2ningens,'Brander, as the 

 type of this genus, adds : " La coquille qui nous sert de type pour 

 I'etablissement de ce genre n'est encore bien connue qu'a I'etat 

 fossile ; quoique Bruguiere dise tres-positivement que son analogue 

 marin existoit a Londres dans le cabinet du Docteur Hunter, fait 

 que malheureusement nous ne pouvons point verifier, mais que 

 cependant nous devons adopter d'apres les profondes connoissances 

 et la perspicacite qui distinguerent si eminemment ce conchylio- 

 logue frangois." In the Didionnaire des Sciences Naticrelles the 

 statement of Bruguiere is noticed ; but M. Blainville observes, that 

 he was not fortunate enough to find the shell. I have examined the 

 Hunterian Collection in London, with the assistance of Mr. Clift 

 and Mr. Owen, with no better success. It may, perhaps, have been 

 in the cabinet of Dr. William Hunter, now at Glasgow; but on 

 consulting Captain Laskey's 'General Account of the Hunterian 

 Museum' there, I find no mention of the shell. Be this as it may, 

 I am now enabled to lay before the Zoological Society five recent 

 species of Typhis ; having been led to the inquiry by finding two 

 species in Mr. Cuming's collection, and having been supplied with 

 one from this Society's Museum, and with two by the liberality of 

 Mr. James Sowerby and Mr. George Sowerby. — W. J. B. 



Typhis Cumingii. Typhis testd suhpyrifarmi, suhventricosd, qua- 

 drifariam varicosd, spinasd, varicibus spirant versus in spinam 

 cavam desineyitibiis, longittidinaliter subsiriatd ; aperturd in- 

 tegrd, ovatd ; labri limbo exlerno subspinoso ; canali longissimd, 

 gracillimd, suhrecurvd : long. 1 1';, lat. -^^j- jjoll. 



Mus. Cuming. 



Hab. ad Caraccas. 



