TRACHYS DENUDATA. d57 



blue with some violet tinges. The whole insect without 

 a dense pubescence, but sparingly sprinkled over on the 

 upper surface with very fine and short white hairs , almost 

 imperceptible on the elytra. 



Head wide, covered with faint traces of curved short 

 lines , widely excavated between the eyes , the excavation 

 with a shallow channel at the bottom ; the inner orbit of the 

 eyes slightly raised. Prothorax very transverse , the lateral 

 anterior angles slightly produced and acute , the lateral pos- 

 terior ones angular ; the lateral margins somewhat flattened , 

 nearly straight, very divergent towards the base which is 

 bisinuate; the median lobe in front of the scutellum slightly 

 truncate ; the whole upper surface covered with very fine semi- 

 circular lines , each of which surrounds the base of a very 

 fine and short white hair. Scutellum very small , trian- 

 gular. Elytra at the base as wide as the base of the 

 prothorax , the shoulders prominent , the sides nearly pa- 

 rallel as far as half their length , although slightly sinu- 

 ated behind the shoulders , then slightly attenuated towards 

 the apex which is rounded. The elytra have no carinae 

 at the sides, but show oblique rows of shallow and 

 distant punctures. The under surface of the body shows 

 very faint traces of curved lines. 



A single specimen of this species , which in several respects 

 is allied to Trachys azurea H. Deyr. of the Aru-islands 

 and Mysole, and T. cupripyga H. Deyr. of Borneo ^) 

 was captured in July 1878 during the recent Sumatra- 

 Expediton at Soeroelangoen by Mr. A. L. van Hasselt. 



Ley den Museum, May 1879. 



1) /. c. p. 247, n«. 321 and 322. 



Notes from the I-ieyden Museum. 



