GASTEROPODA. 349 
Inhabits the Bay of San Francisco, California. 
About the same size, and may be only a variety, of P. teztilis. Its 
arched form, rough surface, coarse black stripes, and different locality, 
seem to warrant its separation. 
Figures 456, 456 a, 496 b, outer, inner, and profile views of the 
shell. 
Paretia (Lorria?) TEXTILIS (Gould). 
Testa depressa, oblique conica; apice anterior, acuto ; costes latis, ele- 
vatis, subplanulatis, nodosis ad quindecim radiantibus ; eptdermide 
viridi, punctis albidis quadratis reticulato: bast ovato-rotundato, 
limbo marginali albido et fusco-viridi fimbriato : facies interior allida ; 
fundo piceo. 
Patella (Lottia?) textilis, Goutp ; Proceed. Boston Soc. Nat. Hist., 
ii. 152. July 1846. Expedition Shells, 10. 
SHELL small, depressed, rather thin, apex at the anterior third, 
pointed ; form obliquely low conical, with about fifteen broad, flattened, 
well-elevated ribs, rendered somewhat nodose by the irregular stages 
of growth. Surface covered with a dark emerald-green epidermis, 
which is dotted with numerous square white spots, so as to resemble 
lace-work. Interior bluish-white, with a chestnut central cloud, and 
with the edge broadly margined with checks of light and dusky green, 
and slightly modified by the ribs. 
Length one inch; breadth three-fourths of an inch; height three- 
tenths of an inch. 
Found at the Straits of De Fuca, and Killimook, by C. Pickertiag 
and J. Drayton. 
Like some varieties of P. viridula; but its base is less orbicular, its 
colour is darker green, and the reticulations are finer and less in 
zigzag ; the ribs are less numerous, nodular, and not paler. Its remote 
locality favours the idea of its being distinct. 
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