4 Mr. J, O. Westwood's Descriptions of the Species 



Long. Corp. lin. 9 — 10. 



Habitat in 7'erra Van Diemenii. Mus. Westvv. &c. 

 Cryptodus Tasniann'miius, Wtstw. Trans. Ent. Soc. ser. 1, p. 21, 

 pi. 2, fig. 1, and details; and Proc. Ent. Soc. 5 July, 1841 ; 

 Burmeister, Handb. d. Ent. v, p. 144. 

 Cryptodus anthracinus, Erichson in Wipgmann, Arcli. 1842, i. 



p. 161. 

 The brilliant jet black colour of this species is very character- 

 istic of it- The accompanying figure represents a specimen of 

 the ordinary size and form ; there seems, however, to be con- 

 siderable difference in these respects in different individuals. 

 Thus Mr. Saunders possesses a specimen only nine and a half 

 lines long, proportionably much narrower, and with the sulcus of 

 the prothorax nearly effaced. 



Sp. 5. Cryptodus politus, Westw. (PI. I. fig. 4.) 



C. niger, nitidus, castaneo parum tinctus ; capite et prothorace 

 punctatis, punctis minutis et in parte antica media prothoracis 

 subobsoletis, hujus lateribus rotundatis ; elytris tricostatis, 

 punctis ovalibus variolosis inter costas notatis, pygidio punc- 

 tis rotundis ; corpore infra nilido tenuissime punctato, mento 

 ad basin emarginato ; antennis 10-ariiculatis, articulo basali 

 angusto, ad apicem parum dilatato recte truncato. 



Long. Corp. lin. 13. 



Habitat in Australia. In Musaeo Hopeano, Oxoniae. 



This species, of which I have seen only a single individual, is 

 considerably larger than any of tlie others described in this paper; 

 from its general appearance it might, at first sight, be considered 

 as a gigantic specimen of C. Tusmanu'ianus, beinu, like it, very 

 glossy and black, but with a slight tinge of chesnut. The head 

 is widened in front of the eyes; it is transverse, finely punctured, 

 with two tubercles on the crown. The antennee are lO-jointed, 

 the basal joint comparatively narrow, with the extremity ex- 

 tending beyond the insertion of the second joint, and slightly di- 

 lated at the tip, which is straightly truncated ; the mentum is 

 rounded in front ; the disc elevated, its middle being very slightly 

 depressed, marked with numerous fine transverse punctures, and 

 its base emarginate. The prothorax has the sides rounded, the 

 base being wider than the anterior part. Ihe elytra are tricos- 

 tate, the interstices marked with irregular rows of oval punctures, 

 each surrounded with a delicate line. The anterior tarsi, in the 

 unicpio specimen which I have examined, are short and thick, the 



