Longicornia Malayana, 665 



caeteris tertio aequalibus. Oculi supra vix approxi- 

 mantes. Pro^/tom;i? transversus^utrinque denticulatus, 

 angulis anticis productis^ rotundatis, apice bisinuato, 

 basi truncata. Scutellum fere semicirculare. Elytra 

 prothorace vix latiora, elongata, apicibus leviter 

 dehiscentia, et spinosa. Pedes tnediocres, antici 

 longiores; femora linearia, compressa, subtus bi- 

 seriatira denticulata ; tihim anticae ut in Xixuthro, 

 intermediae et posticse minus denticulatee ; tarsi an- 

 tici articulo basali baud elongate. Frosternum pro- 

 ductum, postice rotundatum. Mesostermim declive, 

 postice subrotundatum. Abdomen segmento ultimo 

 lato, apice leviter emarginato. Corpus baud pubes- 

 cens. 



I was at one time disposed to regard the species which 

 constitutes the type of this genus as only a peculiar form 

 of Xixuthrus, but the differences in the antennte, pro- 

 thorax, mandibles, &c,, render it impossible to bring it in 

 that genus, as defined by M. Lacordaire. 



Dysiatus melas. (PL XXIV. fig. 1.) 



D. capite prothoraceque nigris, opacis ; elytris, antennis, 

 pedibusque nigro-fuscis, nitidis, illis singulis quin- 

 que-costatis, costis duabusexterioribus fere obsoletis. 



Hab. — Macassar. 



Head black, opaque, minutely and very closely gran- 

 ulate, median groove deeply set, extending to the vertex 

 and terminating in the triangular frontal emargination, 

 antennary tubers strongly raised, mandibles coarsely 

 punctured, except at the apex and on the teeth; pro- 

 thorax black, opaque, minutely and very closely punctured, 

 each side with about ten triangular denticulations, the 

 apex fringed with silky golden-yellow hairs, the disc with 

 two lightly impressed foveae, and a slight median groove ; 

 scutellum nearly completely semicircular, sculptured like 

 the prothoi-ax ; elytra subparallel at the sides, blackish- 

 brown, faintly shining between the costae, where they are 

 roughly and contiguously punctured, five costae on each 

 elytron, the two outer nearly obsolete, the others very 

 glossy, none extending to the apex ; body beneath pitchy- 



TR. ENT. SOC, THIRD SERIES, VOL. III. PART VII. OCT. 1869. 



X X 



