Ill 



Tin- sculpture .,1'tliis very pretty little species resemble* the finest 



lace \\ork. The shell is rathrr flat and n-nilai |\ oval ; thn central 



Ureafl finely and uramilarly striated; <m th- 



areas tl-.r radiating ridges are so regularly in' 



lines as to present a cancellated appearanee. The margin is nj 



ently smooth, but the lens discovers very minute sandy grainilaliona ; 



its color is brown banded with darker patches. The general - 



of the shell is cream-white variegated with red. (Sowb.) 



r> rn i MIIS. Cuming.) 



C.fimh'intn* SOWB., Mag. of Nat. Hist. 1840, p. 293 ; Conch. 

 Illustr., f. 137. 



Known to me only by the above description and the figures. 



CHITON DIMORPHUS Rochebrune. Vol. XIV, pi. 27, figs. 13, 

 14 (x 3). 



Shell ovate-rounded, umbonate, bright red. Anterior valve wide 

 concentrically lineate. Posterior valve and central and lateral 

 areas of the intermediate valves concentrically sulcate and most 

 minutely puncticulate. The central and lateral areas have quad- 

 rangular pits at their intersections. Marginal ligament rufous, reg- 

 ularly striated with white lines. Length 14, breadth 10 mill. 

 (Rochebr. in Zool. Cap Horn, p. 142, t. 9, f. 10). 



Orange Bay, Patagonia. 



LEPIDOPLEURUS CULLIERETI Rochebrune. Vol. XIV, pi. 8, 

 figs. 78, 79 (x 2). 



Shell ovate elliptical, carinated, buff-tawny, maculated with d 

 nut. Anterior valve wide, rounded, minutely radiated ; post- 

 rather small. Intermediate valves having the lateral areas punc- 

 tate, margined with a smooth band; central areas most minutely 

 transversely foveolate. Marginal ligament brown. Length 50, 

 breadth 31 mill. (Rochebr., Zool Cap Horn, p. 140,t. 9, f. 9). 



Orange Bay ; Terra del Fuego. Not common.- 



Probably a Chcetopleura. 



CHCETOPLEURA DACRYDIGERA Rochebr. Shell ovai 

 carinated, olivaceous. Anterior valve, posterior part of the |Kt^ 

 rior valve, and lateral areas of the intermediate valves radially 

 multigranose, the grains elevated, whitish, tear-shaped. Central 

 areas longitudinally ornamented with beaded lines. Marginal liga- 



