from the Seas of Japan. 323 



coso, intus valde lirato, postice leviter sinuato, canali antice subpro- 

 ducto, acuminato, ad sinistram inclinato. 



Unable to refer this shell to any established genus, and my 

 scientific friends failing to assist me, I have ventured upon giving 

 it generic rank. It is an elegant cancellated shell, resembling in 

 form some of the more slender species of Cythara. From all 

 the species of that genus, however, it differs in the recurved 

 canaliculate aperture and in the cancellation of the surface. 



Cytharopsis cancellata, A. Ad. 



C. testa utrinque acuminata, rufescente, spira aperturam sequante ; 

 anfractibus convexis, costellis longitudinalibus et liris transversis 

 confertis eleganter cancellatis, anfractu ultimo antice producto et 

 acuminate. 



Hah, Mino-Sima, 63 fathoms. 



Among the Pleurotoma tribe, this very elegant form most 

 nearly approaches Genota ; but in that Mz7ra-like shell the outer 

 lip is not variced, nor is the surface cancellated. I dredged the 

 young of this species also in 54 fathoms' water off the island of 

 Quelpart ; so that it does not appear to be limited to the Sea of 

 Japan. 



Genus Crossea, A. Ad. 



Testa turbinata, umbilicata, alba. Anfractus convexi, cancellati, 

 simplices aut varicibus instructi. Apertura orbiculata, antice in 

 angulum canaliculatum producta ; umbilico callo funiformi coarctato 

 et circumcincto. 



The singular and beautiful little shells which I have here de- 

 dicated to the able and zealous conductor of the ' Journal de 

 Conchyliologie ' have perhaps the closest affinity with Cirso- 

 tremay Morch, a genus of Scalidse. They also remind one of 

 Torinia with regard to the pecuHar cord-like callus which en- 

 circles the umbilicus, and in their form and cancellation they 

 very much resemble some of the species of Conradia. A great 

 pecuharity consists in the canaliculate angular projection at 

 the fore part of the aperture. 



1. Crossea mirandaj A. Ad. 



C. testa elongato-turbinata, Candida ; anfractibus conyexis, spiraliter 

 liratis, interstitiis cancellatis, varicibus longitudinalibus (3-4) 

 distantibus prominentibus instructis; umbiUco cingulo funiformi 

 succincto ; labro extus fimbriato-varicoso. 



Hah. Gotto Islands, 64 fathoms. 



2. Crossea hellula, A. Ad. 



C. testa depresso-turbinata, alba ; anfractibus spiraliter liratis, inter- 



21^ 



