DESCRIPTIONS OF NEW CHITONS. 291 



Chiton virgulatus. (Con. Illus. fig. 132). 



" Ch. testa ovali, subcarinata, depressa; areis centralibus longitudinaliter 

 striatis ; areis lateralibus ramose sulcatis; areis centralibus longitudinal- 

 iter striatis ; margine squamoso. Long, l/^; lat. 1, poll. 



Hab. ? Mus. G. B. Sowerby, Sen.' 



Differing from Ch, Stokesii in the fineness of the sculp- 

 ture ; it nevertheless resembles that species in general ap- 

 pearance. It is oval, keeled, depressed ; the central areas 

 finely striated in a longitudinal direction ; the lateral areas 

 and terminal valves radiated with fine ridges, branching like 

 bunches of twigs ; the scaly margin is green, banded with 

 mingled black and green, and the general colour is olive- 

 green, variegated near the centre with tortoise-shell brown. 



Chiton patulus. (Con. Illus. fig. 134). 



Ch. testa lata, subcarinata ; valvis tenninalibus et areis lateralibus ra- 

 diatim rugulosis ; areis centralibus longitudinaliter sulcatis ; margine 

 squamoso. Long. 3 ; lat. 2|, poll. 



Hab. ? Mus. Cuming. 



The sculpture of the lateral areas is much coarser than in 

 the last species, and the shell is much broader in proportion 

 to the length ; it is subcarinated, with the central areas 

 striated ; the lateral areas bordered by two flat ridges, with 

 two or three intermediate, coarsely granulated, irregular 

 ridges running into each other at intervals. General colour 

 tortoiseshell brown, with black and white dorsal bands. 

 Margin scaly, dark bottle-green, clouded with black. 



Chiton evanidus, (Con. Illus. fig. 139). 



Ch. testa subelongata, carinata, dorso elevato, laevi ; areis centralibus 

 ad latera tenuissime striatis, areis lateralibus subelevatis, granuloso-striatis, 

 concentrice subundulatis ; margine squamoso. Long. 2^ ; lat. 1^, poll. 



New Holland. Mus. Metcalf. 



Rather long in proportion to its width, dorsal angle obtuse, 

 valves straight, central areas smooth in the middle, faintly 

 striated at the sides ; lateral areas rather elevated, with ra- 

 diating granular stri<B. General colour faded leaf, tinged at 

 the apices with rose, margin scaly. 



Chiton tenuistriatus. (Con. Illus. fig. 135). 



Ch. testa ovali, carinata ; dorso elevato ; valvis omnino tenuissime ra- 

 diatim striatis ; margine squamoso. Long. 1 ; lat. t^, poll. 



Hab. ? Mus. Stainforth. 



Vol. IV.— No. 42. n. s. 2 n 



