GASTEROPODA. 351 
Length nine-tenths of an inch; breadth seven-tenths of an inch; 
height three-tenths of an inch. 
Inhabits the Bay of Valparaiso. 
A small, rather smooth shell, arched in every direction. The co- 
loured margin is sometimes wanting. When fresh, it is very prettily 
radiated, but the exterior rays are seldom seen except near the edge, 
as the surface is usually much defaced by erosion or by coralline in- 
crustations. Sometimes the fascicles of rays are formed of delicate 
green lines. 
Figures 453, 453 a, exterior and interior views of the shell; 453 3, 
profile of the shell; 453, foot of the animal. 
Lorria PINTADINA (Could). 
Testa diversissimé figurata et picta, tenuis, ovato-rotundata, radiatim et 
confertim striata, smaragdina, interdum fuscescens vel cinerascens, 
maculis crebris albidis tessellata aut radiata; apice plerumque sub- 
central, plus minusve elevato: facies interna ceruleo-albida, nitens ; 
Sundo piceo ; limbo lato, piceo et allido tessellato. 
Lottia pintadina, Goup; Proceed. Boston Soc. Nat. Hist., ii. 151. 
July 1846. Expedition Shells, 9. 
Suet thin, homologous, very various in form and colouring. It is 
rounded oval, the length not much exceeding the breadth, the apex 
usually subcentral, generally depressed. Surface delicately radiated 
with numerous, fine, elevated strie; colour a deep emerald-green, 
which varies towards ash-colour, and spotted somewhat in quincunx, 
with small, yellowish-white, oblong spots, which freely transmit 
light. Interior glistening bluish-white, usually with a pitchy black, 
imperfect, central spatula, and with a broad margin of the same co- 
lour, generally tessellated with whitish spots. 
This very variable species is the analogue of L. testudinalis, and 
may be distributed under three principal varieties, viz. : 
a. SHELL depressed, apex nearly central; surface beautifully tessel- 
