Localities, Farallone Islands, Half Moon Bay, New Year’s Point, Santa Barbara and Santa Catalina Islands. Cooper and Rowell.
No. 826, Mollusca, Survey Cabinet.
TYLODINA, Raf.
? T. fungina, G.
T. testa sub-elliptica, elevata; apice sub-centrali; epidermide rufo-brunnea, prope apicem lutea, ultra marginem testæ projecta; intus lutea, prope marginem cærulescens.
Long. 1·3, lat. 1·1, alt. ·5.
Animal unknown, shell sub-elliptical, elevated; apex sub-central, blunt; epidermis reddish brown, yellowish on and near the apex, projecting beyond the margin of the shell; color internally straw yellow, shading towards the margin into a bluish white.
The above measurements are approximate, making allowance for the epidermis which in the dry specimen is contracted and incurved around the margins to a width of about a tenth of an inch.
A single specimen, fresh, though without the animal, was found by Dr. Cooper on the shore of Santa Barbara Island.
No. 994, Mollusca, Survey Cabinet.