NEW EECOEDS & SPECIES OF MALAYAN MEMBRACLDAE. 215 



Type : male. 



Locality : Sandakan, Borneo. 



Unique type in Professor Baker's collection. 



This species is most interesting in that it seems to show a 

 transition form approaching the genus* Centrotoscelus. The genus 

 Centrotoscelus is separated from Tricentrus chiefly by the fact that 

 in the former genus the suprahumeral horns are absent. The 

 species of Tricentrus here described as brevicornis has the smallest 

 and least conspicuous suprahumerals of any species of that genus 

 hitherto reported. 



21. Sipylus dilatatus Walker. 



Add — •Locality: Sandakan, Borneo. 



Two males and one female from Borneo, the males bearing 

 respectively Baker's duplicate Xos. 9401 and 9531. 



This species is apparently widely distributed throughout the 

 East Indies. Specimens in my collection from the Philippines have 

 been compared by Mr. W. L. Distant with Walker's type in the 

 British Museum and pronounced identical. The Borneo material 

 agrees in every respect with the Philippine forms, as do also speci- 

 mens previously collected by Professor Baker at Singapore. The 

 species is easily recognized by the triangular pronotum, the absence 

 of spines on the trochanters and the very nodulate veins of the 

 tegmina. 



28. Centrotoscelus borneensis sp. now (Figs. 9 and 10). 



Pronotum rich ferruginous-brown, finely punctate, closely 

 pubescent with silvery hairs; tegmina ferruginous-hyaline, base 

 dark brown and punctate, tip brown ; no suprahumeral horns ; pos- 

 terior process extending just beyond internal angles of tegmina; 

 undersurface of body dark brown ; legs ferruginous ; hind tro- 

 chanters armed on internal surface with strong teeth. 



Head about, as long as wide, dark brown, the fine punctuation 

 almost entirely hidden by the dense silvery pubescence ; base of 

 head convex, very weakly sinuate ; eyes large, prominent, light 

 brown ; ocelli large, prominent, glassy, about twice as far from each 

 other as from the eyes and situated well above a line drawn through, 

 centres of eyes ; inferior margins of .genae weakly sinuate,' reflexed, 

 sloping downward from eyes to margins of clypeus; ctypeus longer 

 than wide, much deflexed, brown, punctate, pubescent, tip-rounded 

 and flanged. 



Pronotum uniform ferruginous-brown, finely punctate, pubes- 

 cent with silvery hairs ; metopidium broader than high, rich brown 

 punctate, pubescent, slight callosity over inner angle of each eye, not 

 carinate in centre ; humeral angles large, prominent, blunt, dorsum 

 convex over humeral angles, depressed over scutellum, straight on 

 posterior process ; median carina not percurrent, plainly indicated on 



R. A. Soc, No. 82, 1920. 



