Species of Marine Shells. 191 



This species is easily distinguished by the large nuinbci- 

 of its prominent slightly reflexed ribs, which are acutely 

 angularly raised near the suture, the interstices being spirally 

 striated. 



Fam. Buccinidse. 

 Tritonidea (^Cantliarus) fuscopicta, sp. n. 



Tosta ovato-acuminata, crassiuscula, alba, maculis parvis fuscis 

 trausversim clongatis picta ; spira elata, acuta ; anfractus 7, 

 leviter convesi, spiraliter lirati, liris rotundatis, in anfractu 

 penultimo 4, interstitiis spiraliter striatis ; anfractus ultimus 

 medioeriter amplus, superne leviter inepte canaliculatus, liris 

 circiter 12 partitn leviter crenulatis instructus, ad basin leviter 

 contractus ; aperturaobloiigo-ovata, intuslirata ; labrum crassura, 

 arcuatum, utrinque uui-tuberculatum ; columella arcuata, ad 

 basin plicato-contorta ; canalis brevissiinus, leviter recurvus. 



Long. 14, diam. 7 mm. 



I know of no species bearing any near resemblance to this 

 prettily marked little shell. In proportion to the size of the 

 body-whorl, its spire is rather unusually long and sharp for 

 the genus, and the oblong brown markings on the spiral 

 ridges are very striking. 



Fam. Ungiilinidae. 



Diplodonta Ne villi, sp. n. 



Testa suborbicularis, tenuis, albida, epidermide tenuis olivacea 

 induta, leviter inflata, concentrice confertim striata ; umbones 

 obtusi ; margo dorsalis posticus convexo declivis, anticus brevior, 

 rotundatus ; margo ventralis arcuatus ; ligameutum parvum, 

 immersum. Pagina interna luteo-cinerea ; impressiones muscu- 

 lares iudistincti ; cardo normalis. 



Diam. antero-post. 16, umbono-marg. 16, crass. 10 mm. 



Compared with the typical Diplodonta {D. rotundata), 

 the umbones are move obtuse and rather more central, the 

 posterior dorsal margin more sloping; the shell is of a much 

 thiinier substance, and covered with a light olivaceous 

 epidermis. 



Diplodonta [Felania] axhristriata, sp. n. 



Testa subtrigono-rotuudata, eompressiuscula, tenuis, albida, dcn- 

 sissime concentrice striata ; umbones aculiusculi, clatiusculi, 

 aiitice leviter iuclinati ; margo dorsalis i)osticus rotundato declivis, 



