Longicorn Cohoptcm from New Guinea. 280 



side of one male specimen tlieic is an additional .small spine, 

 between the anterior and jiostmedian spine, in a position 

 corresponding to that occupied by tlic second of tlie four 

 spines in Osphryon udustus, Pasc). The head and thorax 

 are clothed both above and below with a rather dense tawny 

 brown pubescence, which is longer on the underside, espe- 

 cially on the hind breast. The scutellum is dark brown. 

 The elytra arc rather thickly punctulate, and in places, 

 especially towards the base in the female, are rather strongly 

 coriaceous or subrugosc ; at the apex each is rounded exter- 

 nally, but towards the suture is truncate, with a distinct tooth 

 or small spine at each angle of the truncature. The fifth 

 ventral segment of the male abdomen is rather strongly 

 eniarginate behind, and ])art of the sixth segment projects 

 beyond it. In the female the fifth segment is also eniar- 

 ginate, but not so strongly as in the male. 



This species differs from 0. adustusy Pasc, in some minor 

 structural characters, such as having only three spines on 

 each side of the jjrolhorax and in having two small spines at 

 the apex of each elytron ; but in general form and in the 

 sculpture and relative proportions of the joints of the antennae 

 there is such close agreement as to justify me in considering 

 the two species congeneric. The genus was placed by Pascoe 

 amongst the Derobrachides, and, in my view, rightly so. 

 Lansberge, in his list of Malayan Prioniche, ranks it with the 

 Ciosteridcs. The two groups have, however, closer allinities 

 than Lacordaire's arrangement seems to suiiirest. 



'OO^ 



OsjjkrT/on I'orhesij sp. n. 



cJ . Fuscus, supra opacus ; prothorace antico posticcquo pilis fulvis 

 timbriato, luteraliter utriiuiuo quadrispinoso, supra minute 

 sparseque granulate et bitubcrciilato, tuberculis baud iortiter 

 flevatis, obtusis, crcbre subreticulatim punctatis; cl}tris opacis, 

 minutissimc sat sparscque granulatis, utrisque ad apiccni bidcn- 

 tatis ; antenuis quam corpore paullo longioribus, articulis 1", 2", 

 ct tertii basi fortiter deuscquo punctatis, ceteris minutissime 

 porosis et opacis, articulis a tertio ad decimum apico extus den- 

 tatis et intus subspinoso-productis. 



Long. 43 mm. 



JIab. New Guinea (//. 0. Forbes). 



Dark brown, almost entirely dull and opaque above. The 

 head with a sparse fulvous pubescence. The prothorax is 

 fringed anteriorly and at the base with fulvous hairs ; tlie 

 two anterior spines at each side are connate at their base, and 



