96 



aperturd violaced ; lahio externa incrassato, intils sulsulcato : 



long. 0"65, lat. 0"3 poll. 

 Hub. sub lapidibus ad Paytam, Peruvise. 



The anterior part of the last volution, towards the lip, is smooth 

 and free from ribs. — W. L. P. 



Nassa pallida. Nassa testd ovato-conicd, sordide albd, canali 

 fusco maculatd; anfractibus 8 — 9, superrie subangulatis, longitudi- 

 naliter obliqui costatis, spiraliter sulcatis et rugoso-striatis ; labio 

 externa intils striata ; calumelld arcuatd, callasd : long. 1'2, lat. 

 0-65 poll. 



Hab. ad Panamam. 



The ribs are not continued over the anterior part of the last volu- 

 tion towards the lip. 



Dredged from sandy mud at a depth of six fathoms. — W. L. P. 



Nassa scabriuscula. Nassa testd ovato-conicd, acuminatd, fused 

 luteo fasciatd, longitudinaliter plicatd, striis devatis asperis spi- 

 raliter cancellatd ; aperturd rotundatd ; labio externa alba, antice 

 fusco maculato, extiis marginato, intils valdi sulcata : long. 0*47, 

 lat. 0-27 poll. 



Hab. ad oras Americse Centralis. 



Dredged in sandy mud at a depth of twelve fathoms in the Bay of 

 Montija.— W. L. P. 



Nassa complanata. Nassa testd avatd, complanatd, olivacedfasciis 

 luteis cinctd ; anfractibus superioribus utrinque granosis, ultimo 

 varicibus lateralibus et plicis graniferis dorso evanescentibus ; 

 aperturd avali; labia externa marginato, intiis sulcata : long. 0*35, 

 lat. 0-22 poll. 



Hab. ad oras Colombiae Occidentalis. 



Found at Atacamas, under stones. — ^W. L. P. , 



Genus Purpura. 



Purpura t.sniata. Purp. testd obovato-ablongd, transversim te- 

 nuissimi striatd, rufo-castaned fasciis fulva-luteis cinctd; spird 

 brevissimd ; anfractu ultimo permagna ; aperturd elongatd, sub- 

 equali, int^s lacted, peritremate castanea lineis albidis radiata ; 

 columelld pland, pallidi castaned ; labio externa intiis denticulato .- 

 long. 0-9, lat. 0-62 poll. 

 Hab. in Oceano Pacifico. (Maldon Island.) 



I am not aware of this interesting shell having been hitherto de- 

 scribed. It bears a considerable resemblance to the Purp. Vexillum 

 of Lamarck ; but diflFers from that species in having a much shorter 

 spire, in its very flat columella, and in the outer lip being more ex- 

 panded and radiated. The bands also afford a ready mark of distinc- 

 tion : in Purp. Vexillum they are of a reddish brown on a lighter 

 ground ; whilst in Purp. taniata the ground colour is dark chestnut, 

 and the bands yellow. — W. L. P. 



