DESCRIPTIONS OF NEW CHITONS. 293 



Chiton lyratus. (Con. lUus. fig. 126). 



Ch. testa ovali, laevi ; dorso subangulato ; areis lateralibus subelevatis, 

 laevibus ; areis centralibus ad latera longitudinaliter lyratis ; margiue 

 lato, minute squamoso. Long. 1^ ; lat. j|, poll. 



Hab. ? M us. Cuming. 



This shell is so thin as to be nearly transparent; it is 

 smooth, rather angulated in the centre ; the lateral areas 

 smooth, slightly elevated ; the central areas marked with 

 faint longitudinal ribs. The margin is covered with regular 

 minute scales. The general colour is drab, variegated with 

 brownish concentric lines at the sides, and reddish-brown 

 dorsal bands on some of the valves. 



Chiton lentiginosus. (Con. Illus. fig. 120). 



Ch. testa ovali, carinata, laevi ; dorso elevato, areis lateralibus incon- 

 spicuis ; colori fulvescente brunnea, maculis cseruleis, rotundatis, ornata ; 

 margine minute squamoso. Long, f ; lat f , poll. 



Australia. Mus. Dr. Stanger. 



Remarkable for the regular rounded blue freckles scattered 

 over the yellowish-brown ground. The shell is oval, smooth, 

 keeled, with the valves straight, and the lateral scarcely dis- 

 tinguished from the central areas. The margin is covered 

 with minute scales. 



Chiton concinnus. (Con. Illus. fig. 117, 118). 



Ch. testa ovali, lata, subdepressa, minutissime granulata, subcarinata ; 

 valvis rectis ; areis lateralibus inconspicuis ; margine lato, minute squa- 

 moso. Long, i ; lat. f , poll. 



Chonos. Mus. G. B. Sowerby, Sen. 



A very neat, small, dark-coloured species ; granulated, but 

 so minutely as to appear smooth. It is distinctly keeled, yet 

 depressed. The lateral areas are not very distinctly sepa- 

 rated from the central ; the margin is broad and scaly ; the 

 colour dark olive, in some specimens nearly black ; inside 

 green. 



Chiton Jimhriatus. (Con. Illus. fig. 137). 



Ch. testa ovali, depressa, lata; areis centralibus tenuissime granoso- 

 lineatis ; areis lateralibus valvisque terminalibus tenuissime cancellatis ; 

 margine minutissime granulato. Long, f^, ; lat. |^, poll. 



Peru. Mus. Cuming. 

 The sculpture of this very pretty little species resembles 



BH 



