70 Barnes on the Genus Chiton. 



ted to Doctor Mitchill; who, with his accustomed 

 liberality, transferred the duphcates to ttie Lyceum. 



Referred, as usual to a committee for examination, they 

 prove to be five species of the genus Chiton, three of which 

 ate probably undescribed. 



SPECIES. 



1. Chiton Magellanicus. Chemnitz, 

 Shell with a black dorsal band, edged with yellow 

 or white. 



D illwyn p. 9 G m e.1 in p. 3204 

 Cabinet of Dr. Mitchill. 

 Hab. Coast of Peru. Capt. C. G. Ri dg ely. 



2. Chiton Striatus. Fig. 1. PI. 3. 

 Shell with eight finely striated valves, and the 

 scaly margin of a uniform colour. 



Hab. Coast of Peru. C apt. Ridg ely. 



Cabinet of Dr. Mitchill. 



Length 1.5 Breadth 1.1 inch. 



Shell broader in proportion to its length than Chiton 



sqiiamosus, which it resembles in the direction oi the striae : 



the marginal triangles, being striated transversely, and the 



dorsal longitudinally, and the terminal valves radiated. 



Stria very fine, somewhat cancellated and interrupted. 



Margin narrow, covered with small, round, shining, scales 



of a uniform dark bronze colour. Specimen dark green ; 



in its dried state, cinereous : inside light bluish green. 



3. Chiton Peruvianus. Lamarck. Fig. 2. PI. 3. 

 Shell with eight valves, margin thickly set with 

 black hairs, and a fringe at each joint. 



Hab. Coast of Peru. Capt. Ridg ely. 



Length 1.5 Breadth .75 



Cabinet of Dr. Mitchill. 



Shell slightly striated, somewhat rough, cinereous, with a 



tinge of red in the center. Margin thickly covered with 



black or dark brown hairs, which, in the living specimen, 



are nearly half an inch long ; and also a thin fringe or row 



