226 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Platidia seminula radiata Dali, 1885. 
Plate 49, figs. 2, 7. 
Proc. U. S. N. M., 8:551. 
It differs from the normal type by having fine radiating lines on the 
upper valve. (Dali.) 
Type in U. S. N. M. Type locality, San Diego, California. 
Range. San Pedro, California, to Todos Santos Bay, Lower Cali¬ 
fornia. Also off Santa Cruz Island, West Indies, in 218 fathoms. 
Genus TEREBRATULINA Orbigny, 1847. 
Shell finely striated, auriculate, deltidium usually rudimental; foramen 
incomplete; loop short, rendered annular in the adult by the union of the 
oral processes. (Woodward Man. Moll.) 
Type. Anoniia caput-serpentis Linnaeus. 
Distribution. United States, Norway, Cape, Japan, Scotland, Medi¬ 
terranean, Ireland, Nova Scotia. 
Range in time. Oxfordian, United States, Europe. 
Terebratulina kiiensis Dali and Pilsbry, 1891. 
Plate 16, figs. 13, 14. 
Nautilus, 5:18. 
This species differs from the largest unguicula with which we have 
been able to compare it in the following particulars: It is larger and 
proportionately somewhat wider and the beak proportionately shorter, 
much such differences as would come about by increased size in such a 
species as unguicula. If more material should prove that the supposed 
variety cannot be connected with unguicula, the varietal name can be taken 
as specific. Length, 44; length of haemal valve, 38.5; maximum width, 
40; maximum diameter, 21.5 mm. (Dali.) 
Co-type in U. S. N. M., No. 128463. Type locality, coast of the 
Province of Kii, Japan. 
Range. Unalaska, Alaska, coast of Washington, Santa Cruz, and 
San Nicolas Island, in deep water. Also Kii, Japan. 
Terebratulina unguicula Carpenter, 1865. 
Plate 38, figs. 2, 3,4, 5. 
Proc. Zool. Soc., 1865, p. 201; figs. 1-4. 
T. t. juniore “Terebratulinae capiti-serpentis” simillima, sed latiore, 
subtriangulata; punctis valde conspicuis; costis conspicuis, interdum ob- 
tusioribus, aliis intercalantibus; intus amento suboctiformi, postice aperto, 
cruris diagonalibus cardini affivis: testa adulata va; va inferiore subro- 
tundata, marginem versus hand planata; umbone valde tumente, latiore; 
striis radiantibus, ut in “T. capiti-serpentis^ conspicuous; marginibus 
