CLASS GASTROPODA 
159 
Type in ? Type locality, Alaska. 
Range. Kyska Island, Aleutians, to Shumagin Islands, Alaska, to 
California. 
Genus LOTTIA Gray, 1834 
Shell patelliform, depressed, the apex anterior. The typical and only 
species is among the largest and most active of limpets, the shell attaining 
three inches in length. 
Type. Lottia gigantes, Sowerby. 
Distribution. West coast of North America. 
Lottia gigantea Gray, 1843 
Journal de Conchyliologie, 13:141. 
L. t. magna, crassiore, planata, expansa, textura saepius extus spon- 
giosa; nucleo minore, corneo, nigro-fusco, ancyliformi, vertice mamillato, 
subelevato; dein elongata, postice grisea, undulata; t. adolescente verru¬ 
cosa, radiis obscuris, antice baud verricosis; t. adulta plus minusve lata, 
plus minusve radiata seu verricosa; apice plus minusve a margine remoto; 
parte antica seu haud exstante, seu circiter per quintain totius longitudinis 
projiciente; parte postica plus minusve elevata, convexa; extus ut in 
Acntaea pelta picta, albido-grisea, fusco-olivaceo copiose irregulariter stri- 
gata: intus, plerumque testudinaria, margine lato, nigro; spectro definito, 
seu rarius albido; cicatrice musculari fortiore, interdum purpurei seu vio- 
laceo tincta. Long., 2.6; lat., 2.05 ; alt., 7 poll. (Gray.) (Carpenter.) 
Shell large, solid, oval, depressed, the apex near the front margin; 
outer surface eroded, of a spongy texture, dull brown, gray toward the 
summit. Inside having a black rim around the margin, deep chestnut 
brown outside of the muscle-impression, which is strong, bluish or 
purplish-white. Central area chestnut brown, more or less mottled with 
white, rarely entirely white. Length, 75; breadth, 55-60; alt., 17-20 mm. 
(Tryon and Pilsbry, Manual of Conchology .) 
Type in ? Type locality ? 
Range. Crescent City, California, to Guadalupe and Cerros Islands. 
Family COCCULINIDAE 
Genus COCCULINA Dali, 1881 
Shell patelliform, apex posteriorly inclined, with a deciduous spiral 
nucleus; margin entire. 
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