VO!.. XVI, 



\X'Xi. 



] PROCKEDINGS OF THE NATIONAL MUSEUM. 329 



One young peifect specimen, Ascension Island (Mus. No. 125405). 

 Heretofore credited to the Florida Keys and Barbados. 



62. Mitia plumbea Laiiian^k. 



One exani]»le, Porto (hinulc (Mus. No. 125;?80). In Tryon's Mono- 

 graph this is included in the synonymy oi' ]\Htra cheniis. I sliould not 

 place it iu sucli a i)osition. 



Fanuly K AS( ! I( )LAIIII I )A^. 



Genus LATIRUS Moutfort. 



.Sub<i;»'nus LEUCOZONIA Oniy. 



63. Leucozonia triserialis Laniarck. 



One beach shell, Porto (hande (Mus. No. 125;};n). 



Family BUCCINID.E. 



Genus PISANIA (iray. 

 64. Pisania variegata (J ray. 



One adult, beach; two Juniois, fresh. Porto Grande (Mus, No. 

 125580). 



Florida Keys, West Indies, liernuula. Southerly to Trini<lad on the 

 American si<le. 



Genus COMINELLA Gray. 

 65. Coniinella limbosa Lamarck. 

 = C. Wohhmari Kiencr. 



On<^ specimen from each locality. PortoCJrande (Mus. No. 125582); 

 (Jape Town (Mus. No. 125;J2(;). 



Family (JOLUMBELLII)^^]. 

 Genus COLUMBELLA Lamarck. 



66. Columbella rustica Linno. 



Common, fresh, living. Porto Grande (Mus. No. 125310). 



The C. rusticoides of neili)rin, which ranges on the American shores 

 of the Atlantic from (Jedar Keys to (Uiba, may be regarded as a syno- 

 nym of the above. 



67. Columbella rustica Liniu'\ 

 variety, Azorka Drour't. 



Numerous examples. Fayal (Mus. No. 125282). 



Subgenus NITIDELLA Swaiuson. 

 68. Nitidella cribraria Lamarck. 

 Common; Porto Grande. 



