GASTEROPODA. 345 
PATELLA CINNAMOMEA (Gould). 
Testa parva, ovalis, convexa, tenuis, cinnamomea, cum strits radiantibus, 
tenuibus, confertissimis, tmbricato-asperis ; apice acuto, antico, ad mar- 
ginem valdé declinato; aperture margine antertori excurvato, intus 
costa albé marginal muntto. 
Patella cinnamomea, Goutp; Proceed. Boston Soc. Nat. Hist., 1. 
151. July 1846. Expedition Shells, 9. 
SHELL small, thin, oval, convexly arched, of an intense cinnamon- 
colour within and without. ‘The apex is acute, projecting even beyond 
the anterior margin and nearly touching it, so that the apex is far 
below the most elevated point of the shell, which is nearly central. 
Surface covered with minute, very numerous, radiating strie, which 
are rough with crowded points, that are very slightly vaulted. The 
aperture is an elongated oval, the margin minutely crenulated, and at 
the anterior portion broadly excurved and strengthened within by a 
white, marginal rib, causing the interior to resemble a Navicella. 
Length half an inch; breadth three-eighths of an inch ; height nine- 
fortieths of an inch. 
Obtained at New South Wales, from Mrs. Mitchell. 
Closely allied to P. Galathea, Lam., which is, however, snow-white, 
more circular, the apex more central, and but slightly deflected, and 
the strie are much coarser. 
Figures 447, 447 a, views of the outside and inside of the shell ; 
447 b, details of sculpture, magnified. 
PaTeLLA ARGENTATA (Gray), Appendix to Beechey’s Voyage, 148, 
tab. 39, f. 7. 
ANIMAL with the foot oblong, rounded at the angles, olivaceous, 
edged with yellow; head rounded, yellow; branchie conspicuous, 
greenish-yellow ; mantle undulated, yellow, with a tint of green, the 
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