OF BALANINUS OCCURRING IN BORNEO. 373 



4. Balaninus excavatus, sp. n. 



Colouring as in B. bis2)ilotics, sp. n., except that the transverse 

 white patch on the elytra extends only from interval 4 to 6 or 7, 

 and the white scales at the base of interval 2 in the 5 are 

 lacking ; beneath, the scales in the centre of the prosternal white 

 patch are much narrower than the outer ones, exposing the 

 integument, the mesepimerou bears at most only a few white 

 scales, the mesosternal process is clothed with narrow scales, the 

 metepisternum has no bare basal patch, and the scales on the 

 venter are much narrower. 



The following are the principal structural differences from 

 B. hispilotus : — Head with the rostrum arising from about ( J ) or 

 well below ( 9 ) the middle of the eye. Rostrum — S ? much less 

 strongly or denselj^ punctate, without a smooth central line, the 

 lateral furrow almost impunctate ; 5 , much shorter, being only 

 of the same length as the body. Antemue, with the scape reach- 

 ing the eye in the $ but not in the S . . Prothorax shorter than 

 its basal width, its sides more strongly rounded. Elytra jointly 

 and rather shallowly sinuate at the apex. Venter with segment 1 

 of S deeply excavated and containing a short median furrow at 

 the base ; segment 5 of c? hardly sinuate at the apex, not 

 depressed in the middle, and with a small curved tuft of brown 

 hairs on each side of the hind margin, the hairs on the pygidium 

 being blackish brown. 



Length, 5*2-6-"4mm.; breadth, 3-3"2mm. 



Sarawak: 16, 1 $, Mt. Merinjak. 600-2200 ft., v. 1914 

 (types), and 1 S , Mt. Matang, 3200 ft'., 18.xii. 13 {G. E. Bryant). 



The o' from Mt. Matang has a feAv white scales near the base 

 of interval 2 on the elytra. 



5. Balaninus excisipes, sp. n. (PI. I. fig. 3.) 



S $ . Dull bla,ck, with yellowish-grey stripes ; the head with 

 a few white setiform scales above and below ; the pi'othorax with 

 a central yellowish stripe and scattered isolated white scales at 

 the sides ; the elytra with two complete yellowish stripes on 

 intervals 2 and 6 (the scales in the former being larger), 

 intervals 8-10 covered with pale scales, those on the basal third 

 being narrow and whitish, the remainder broad and yellowish, 

 intervals 3, 4 and 7 with some pale scales at the apex, and a few 

 at the base of 4, the rest of the surface rather thinly clothed with 

 narrow brown scales ; the presternum with only a few larger 

 whitish scales on the intercoxal process, the sides of the meso- 

 and metasternum densely clothed with broa.d yellow scales, the 

 centre of the sternum and the whole venter fairly closely covered 

 with narrower wdutish scales. 



Head Avith the rostrum arising from about ($ ) or well above 

 { (S) the middle of the eye (in side view). Rostrum — J , much 

 shorter than the body (3:5), with a smooth median line in the 

 basal half and three rows of punctures on each side of it, without 



26* 



