fi2 NASSA. 



More pupfeform and apparently with much closer, finer sculp- 

 ture than N. ni.geUa. yet they may very possibly be identical. I 

 do not hesitate to place these species in this group, although 

 they possess an exterior lip-varix, since otherwise, the relation- 

 ship is sufficiently apparent. 



Undetermined Species of jS^asso. 



BucciNUM Floridanum, Lesson. Acapulco. 



" Is the South Sea representative of B. (Juvieri of authors," 

 N. Gemmellar], Biondi. ? Medifei-raneon. 



Is exotic, and perhaps =^ ^V, trimttata^ Say. 

 N. TRTCARINATA, Lam. Hab. unknown. 



Not recognized by Kiener. Deshayes or subsequent authors. 



N. NisoTA, Potiez et Michaud. Senegal. 



N. CANCELLARIA, Poticz et Michaud. European Seas. 



N. SEMINULUM, Tapp. Can. Papuan Mes. 



X. viTREA. Tiray. Sierra Leone. 



N. ATTENUATA, Gray. Pacific Ocean. 



N. cosTULATA and N. marmorata, Anton. Hab. unknown. 



X. FRIGENS, Von Martens. W. Coast of Africa. 



Dredged at a depth exceeding 150 fathoms (precise depth not 

 mentioned) ; resembles N. trivittata, Say, somewhat, but more 

 fragile. Owing to the depth of water it has the appearance of 

 the Arctic mollusca. The species of Nassa are decidedly littoral 

 in habit, so that this is an extraordinary exception, and raises 

 the question Avhether the species is really a Nassa, 



N. NiTiDULA and N. candtdissima, C B. Ad. Jamaicn. 



N. GEMMULOSA, C. B. Ad. (Very young shell.) Panama. 



N. LiMN^FORMis, N. Herrmannseni, N. Hanleyana, N. rufa, 



N. scuLPTA, N. Darwini, N. FoRBESii, Dunker ; all without 



locality. N. varians, Dunker, Japan. 



N. VITREA, N. ACUTi.MARGO ( China), N. AFRUM (Aden, Madagascar), 

 N. BicoLOR, N. BiRMANicA (Burmah), N. Chinensis {Loo Choo 

 hies), N.coRRUSCANs(5aZi/s/.), N.LiMTCOLA(C/iina), N.ringens, 

 N. piNGUis {Bali Isl.), X. QUiSQUiLTARUM {China), X. Sinarum 

 {China). X. Lii;TUM,all of Philippi. 



