OF BALANINUS OCCURRING IN BORNEO. 383 



equal to one another ; the club neavly as long as the three pre- 

 ceding joints, the apex obtuse and joint 1 distinctly longer than 2. 

 Prothorax somewhat broader than long (5 : 4), broadest at the 

 base, the sides almost straight and slightly converging from the 

 base to the middle, then rounded, and strongly constricted at the 

 apex ; the apical margin truncate dorsally and with feeble post- 

 ocular lobes ; the upper surface with deep reticulate punctures. 

 Scutellmn small and narrow, twice as long as broad. Elytra with 

 the shoulders very sloping, the conjoint apices shallowly sinuate, 

 the sutural impression shallow and asymmetrical, the sutural 

 margin of the right elytron being distinctly sinuate, and the 

 apical half of the suture with raised interlocking seta3 ; strife 9 

 and 10 not nearly reaching the base. Legs not long, the hind 

 femora not extending beyond the elytra ; the femoi'al teeth long 

 and sharp, the tibise with the basal sinuaticn shallow. Venter 

 with segment 1 flattened in the middle ; segment 5 with the 

 apical margin broadly sinuate, the two angles bearing a tuft of 

 brown hairs ; the pygidium with erect brown hairs shorter than 

 the ventral tufts. 



Length, 4"5 mm. ; breadth, 2-2 mm. 



Sarawak : 2 S <3 , Kuching [R. SJtelford). 



The structure of the rostrum distinguishes this species from 

 all the others here described, but it is probable that the character 

 may prove to be less pronounced in the female sex ; the conceal- 

 ment of the scrobe and the shortness of the scape are also peculiar 

 characters. 



16. Balaninus trinotatus, sp. n. (PI. II, fig. 8.) 



S 2 . Colour dull black, thinly clothed above with narrow- 

 brown scales interspersed Avith white ones, the latter frequentl)^ 

 deciduous but always present along the base of the elytra, which 

 also bear an elongate dense patch of broader white scales on 

 interval 2 behind the middle and a few white scales and bristles 

 on interval 1 at the same place; the scutellum with dense white 

 scaling ; the lower surface clothed with fairly broad but isolated 

 white scales, and with much denser patches on the mesepimeron, 

 at the posterior angles of metasternum, and along the sides of the 

 abdomen. 



Head yvith. the rostrum arising from well above the middle of 

 the eye, its upper surface being a little above the level' of the top 

 of the eye in both sexes, liostrum about three-fifths the length 

 of the body in both sexes, stout in the basal half and distinctly 

 narrower beyond the antennae ; the basal area with tv/o irregular 

 rows of punctures on each side of the smooth median line, then 

 a broad lateral furrow, edged below by a sharp carina ; the scrobe 

 passing beneath the rostrum at the base. Antennce inserted at 

 about the middle of the rostrum in both sexes, the scape not 

 nearly reaching the eye ; the funicle with joint 1 as long as 2 

 and half of 3, joints 3-5 gradually diminishing, and joints 4, 6 



