GASTEROPODA. 313 
sulcatis, sulcis incumbentibus et sulco radiante bisectis ; areis centrali- 
bus ad latera lineis rugosis longitudinaliter sculptis, ad dorsum pune- 
tatis ; valva anteriort sulcis concentricis et sulcis radiantibus remoti- 
ortbus decussata ; valwd posteriori prope marginem wmbonata ; margine 
lato, pruinoso, flavescente. 
Chiton quercinus, Goutp; Proceed. Boston Soc. Nat. Hist., ii. 142. 
July 1846. Expedition Shells, 3. 
SHELL small, depressed, slightly carinate and beaked, ovate, yel- 
lowish wood or oak colour, clouded with olive or dusky slate-colour at 
the sides. Lateral areas scarcely raised, but distinctly marked by 
coarse longitudinal sulci, which are divided by a radiating furrow and 
sometimes more, and the two portions form somewhat of an angle 
with each other; central areas with faint, rugose, longitudinal lines 
towards the margin, and scattered punctures about the apex; anterior 
valve checked with raised spaces formed by concentric and more dis- 
tant radiating furrows, which become more numerous near the margin ; 
posterior valve with the umbo nearly terminal, so that the transverse 
ridge runs nearly parallel to the margin. Marginal ligament broad, 
yellowish, pruinose. 
Length seven-eighths of an inch; breadth three-fifths of an inch. 
Inhabits New South Wales. From Mrs. Mitchell. 
It is allied to C. foveolatus, Sowerby. 
Figure 437, the back of the shell; 437 a, the sculpture, magnified. 
Curron muscosus (Gould). 
Testa ovalis, depressa, scabra, ad dorsum obtusa, cinereo bifasciata et 
plumose striata ; valvis magnis, lateraliter disjunctis ; areis lateralibus 
parvis, granulis subquadratis radiantibus arcuatim tessellatis ; areis 
centralibus sulcis acutts confertis fleruosis subparallelis longitudina- 
hter aratis ; valva antica magna, semicirculari, decemcostaté et granu- 
lis subquadratis insculpta; valva posteriori parva, costa transversali 
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