CH.ETOPLEURA. 73 



The following names are probably to be considered synonymous, 

 but I have not seen the types, which alone can fix their identity. 



Chiton fuscus Gmelin, Syst. Nat. xiii, p. 3204, founded upon 

 Chiton Linter Indlce orientalis Chemnitz, Conchylien Cab. viii, p. 

 279, pi. 95, £ 799, 800. This name, if it really belongs to the species, 

 will take precedence of papilio, being anterior in date. The spec- 

 imens figured by Chemnitz were from the cabinet of the Gesellschaft 

 naturforschender Freunde zu Berlin. 



Chiton linter Reeve, Conch. Icon, iv, pi. 13, f. 72 (March, 

 1847), identified by Reeve with Ch. linter Indice orientalis Chemn., 

 in ignorance of Gmelin's prior binomial for the same Chemnitzian 

 form. Reeve's description is as follows : " Shell oblong, a little 

 attenuated anteriorly, valves swollen in the middle, smooth or very 

 minutely impressly striated throughout ; yellowish-brown, painted 

 along the middle of each valve with a remarkable triangular brown 

 spot, yellowish on each side ; ligament horny, transparent, beset 

 with rather distant rough horny grains. Chemnitz, Conch. Cab., 

 vol. viii, p. 279, pi. 95, f. 799. Hab. East Indies. This is another 

 interesting species of Chiton which I have the pleasure of restoring 

 from the obscurity in which it has remained since the publication of 

 the ' Conchylien Cabinet,' in 1785." 



Reeve's figure is copied on pi. 49, fig. 35 of vol. xiv. It is prob- 

 ably a worn specimen of papilio. 



C. PUSTULATUS Krauss. PI. 10, figs. 23, 24, 25, 26. 



Shell oblong-ovate, convex, beautifully painted with spots of white, 

 yellow, rufous and brown, banded in the middle with white. 



Anterior valve, posterior area of the posterior valve, and lateral 

 areas of the intermediate valves very delicately punctulate and 

 sparsely sculptured with elevated, cylindrical pustules. Central areas 

 longitudinally subgranose and cancellated. 



The insertion-plate of the anterior valve is weakly striated, pro- 

 jects widely beyond the eaves, and has 9 slits. Middle valves with 

 1 slit, posterior insertion-plate much shorter, having 8 slits. 



Girdle reddish-yellow, sparsely clothed with long brownish hairs. 



Length 13, breadth 8 mill. 



Natal, on the shore (Wahlberg.) 



Chiton pustulatus Krauss, Die Siidafrik. Moll., p. 42, t. 3, f. 7. 



I have not seen this pretty Chcetopleura, the description of which 

 is translated from Krauss' excellent book. 



