250 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Buccinum castaneum fluctuatum Dali, 1919 
Plate 24, fig. 3 
Proceedings of the United States National Museum, 56:327. 
A form without spiral cords but with (on the last whorl, about 10) 
somewhat irregularly arcuate coarse ribs, and larger than the original 
type. 
Type in United States National Museum, No. 217152. Type locality, 
St. George Island, Bering Sea. 
Range. Pribilof Islands to Unimak Pass and the Shumagin Islands, 
Alaska. 
Buccinum castaneum incisulum Dali, 1919 
Plate 9, fig. 7 
Proceedings of the United States National Museum, 56 :327. 
Smaller than the original type and has (on the last whorl, about 19) 
more numerous smaller ribs, which on the periphery are more or less 
broken up into nodules, and has the fine spiral striation fasiculated by 
the presence at irregular intervals of deeper spiral grooves. (Dali.) 
Type in United States National Museum, No. 213159. Type locality, 
Unimak Pass, Aleutian Islands. 
Range. Western Bering Sea. 
Buccinum castaneum triplostephanum Dali, 1919 
Plate 5, fig. 9 
Proceedings of the United States National Museum, 56:327; 24; PI. 37, fig. 9, 1902. 
I named a variety with three very prominent spiral cords on the last 
whorl, var. tricarinatum. I find that Brugiere named a ( Nassa ) Buccinum 
tricarinatum, so I propose for this variety, the designation of triploste- 
p liana. (Dali.) 
Type in United States National Museum. Type locality, Aleutian 
Islands. 
Range. Kyska and Amchitka Isands, Aleutian Islands. 
Buccinum picturatum Dali, 1877 
Plate 5, fig. 8 
Proceedings of the California Academy of Sciences, 7 :8. Proceedings of the United 
States National Museum, 24; PI. 37, figs. 8, 9, 1902. 
Shell of moderate size, rather slender, with acute apex, sculptured 
with fine wavy striae, the interspaces between which are usually flat, but 
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