636 Longicornia Malayana. 



Demonax coll arts. 



D. niger; elytris albo-trifasciatis, fascia prima a basi 

 remota, /\-forina,Jite, secunda post medium, tertia 

 indistincta apicali. 



Hab. — Ceram. 



Black ; head and prothorax with scattered grayish 

 hairs, the latter shortly ovate, with a chalky-white band 

 bordering the base ; scutellum somewhat triangular, the 

 apex rounded; elytra narrow, with three whitish bands, 

 the first nearly a third of the length of the elytra from 

 the base, A -shaped, the second behind the middle, 

 straight, the third at the apex, somewhat indistinct ; 

 body beneath black, posterior edges of the metasternum 

 and of the first two abdominal segments white 3 legs and 

 antennae dark brown. 



Length 2| lines. 



Demonax interruptus. 



D. niger ; elytris albo-trifasciatis, fascia prima a basi 

 remota, obliqua, ad suturam interrupta, secunda pone 

 medium, tertia distincta apicali. 



Hab. — My sol. 



Black ; head and prothorax with delicate grayish hairs, 

 the latter scarcely ovate, only a little longer than broad, 

 its basal edge and the bands on the elytra chalky-white ; 

 elytra rather short, three-banded, the first midway be- 

 tween the base and the second band, short, obliquely 

 ascending, interrupted at the suture, the second consi- 

 derably behind the middle, the third distinct, apical; 

 body beneath black, posterior edges of the metasternum 

 and of the first two abdominal segments white ; legs and 

 antennae ferruginous brown. 



Length 2| lines. 



In the above two species, the basal joint of the pos- 

 terior tarsi is nearly twice as long as the three next 

 together, but in the following it is only about half as 

 long again. 



Demonax exilis. (PI. XXII. fig. 7.) 



D. niger; elytris dilutioribus, macula communi pone 

 scutellum, fasciisque tribus rectis, albis. 



