MoUusca in the Collection of the Zoological Society. 377 



liato, supcrne canaliculato ; columella, crenulatd ; long. 1^, lat. 

 lA, poll. 

 Hah. 



In this species, besides the murications, there are on each whorl two 

 rows of granulations near the suture. 



MUREX DUCALIS. 



M, testd ventricosd, tuberculato-muricatd, spird brevi ; anfractu ulti- 

 mo admodam ventricoso, varicibus 6-7, elevatis, dentatis et juxta 

 basin for nicato-muricatis, infra rubris ; umbilico mediocri ; aper- 

 turd et labia dentato rubris ; long. 6, lat. 4, poll. 

 Hab. in Oceano Pacifico. 



This fine shell was dredged up by Lieut. Belcher, near Mazatlan. The 

 ground colour of the old shell is fawn, banded closely and unequally 

 with obscure chesnut. In the young shell the ground colour is lighter, 

 the bands are broader, more distant and darker, and the nauricated tu- 

 bercles are sharper, while the umbilicus is scarcely apparent, and the 

 aperture, excepting its rosy margin, is white. 



Pyrula patula. 



P. testd pyriformi, ventricosd, spird brevissimd, anfractibus superioribus 

 tuber culato-muricatis, ultimo superne angulato ; aperturd magna, pa- 

 tuld, labio superne angulato, spiram versus in sinum profunde exca- 

 vato; columelld arcuatd, ad basin flexuosd; labio columellari tenia ; 

 epidermide crassd, striata. 



Hah. ad littora Oceani Pacifici. 



This fine shell was first noticed in the Tankerville Catalogue, with 

 doubts whether it might not be a species distinct from P. Melongena. 

 Specimens of all ages, in the finest condition, brought from Mazatlan by 

 Lieut. Belcher, have, in our opinion, dispelled these doubts. The very short 

 but muricated spire with the high angle of the body whorl — the angular 

 upper hp terminating near the spire in a deep and rounded sinus — the 

 arched columella,sinuous towards the base — the thin and curtailed columellar 

 lip — the wide reddish-yellow aperture bordered round the exterior lip vdth 

 black, and the absence of the deep and wide canal at the sutures, are 



