7'l I. MM. 1 . 



anterior margin : anterior border rather thickly punotured. Elytra 

 fuscous; the interstioee with double rows of close, small, unequal- 

 I punotures. Legs testaceous, the anterior Legs dusky. 



One example has the base of the elytra tinged with yellow, and 

 the legs are duskj except the base of the femora. 



In the British-Museum collection are two specimens from Mysol, 

 which differ from the foregoing in being nearly of a uniform grey 

 or blackish grey. These may prove to be a distinct Bpecies. 



Trichalus nigrescens. 



(Plate XVII. fig. 4.) 



Griseo-niger, opacus; thoraoe marginibus angustissime tes- 

 taceis. J . Long. 3| lin. 



Hob, Mysol ( Wallace). 



This Bpecies differs from the darker form of the preceding species 

 in having the antennae less linear, more decidedly dentate, the joints 

 being a little broader. Thorax trapezoidal, with the extreme mar- 

 gins pale : besides the usual mesial areolet, there are two small 

 anterior ones not well defined, which are roughly punctured. The 

 whole underside and the legs are nearly black. 



Trichalus perturbatus. 



(Plate XVII. fig. 7.) 



Pallida davits, opacus; antennis infuscatis ; elytris fuscis, basi 

 anguste flavo ; abdomine apice infnscato. <3 , $ . Long. 4 lin. 



Hob. Dorey, New Guinea ( Wallace). 



This species scarcely differs from T. griseus, except in its much 

 larger size : the antenme are linear and long. The thorax is tra- 

 pezoidal, with the anterior border punctured. Elytra dark fuscous, 

 with the base more or less yellow ; the punctures in the rows of 

 the interstices are small and very close, a little more regular than 

 in griseus. 



Var. A. Head, tibia), tarsi, and abdomen pale fuscous. 

 JJab. My sol. 



Var. B. Legs, except at the extreme base, and the abdomen, fus- 

 cous. Elytra more ample and longer than in the type. 



Hah. Amboina. 



Trichalus detractus. 



(Plate XVII. fig. 5.) 



Pallide flavus ; antennis elytrisquc fuscis, his basi flavis ; pedibus 

 infuscatis, femorum basi flavo; abdomine fusco. Long. 4 lin. 



110<. Waigiou ( Wallace), 



