112 Mr. H. W. Bates on Longicorn Coleoptera. 



moratis ; antennis articulis basi rufescentibus : maris tibiis posticis 

 apice valde dilatato-compressis. Long. 9 lin. S $ • 



Closely allied to H. picticornis, but larger and darker, with 

 the elytra behind the middle much more variegated with pale 

 ashy brown, and the conical protuberances of the shoulders 

 strongly curved anteriorly. The antennae are coloured as in H. 

 picticornis, the second and basal half of the third, with bases of 

 the remaining joints being pale reddish. The underside of the 

 body is tawny brown, with the centre of the abdomen black. 

 The elytra are smoothly and strongly convex from base to apex, 

 without any trace of centrobasal ridge or tubercles. 



Ega, Upper Amazons. 



4. Hypselomus dimidiatus, n. sp. 



H. modice convexus, fuscus, fulvo irroratus ; elytris apud medium 

 ochraceo fasciatis, deinde usque ad apices pallida ochraceo-bruu- 

 neis fusco striatis et maculatis ; thorace supra quinquetuberculato, 

 lateribus acute tuberculatis. Long. &-7 lin. S $ . 

 Head dingy brown. Antennse dull brown, base of each joint, 

 from the third, pallid-reddish. Thorax uneven, disk on each 

 side with two prominent tubercles, and dorsal line elevated be- 

 hind into a ridge, sides each with an acute tubercle; dingy 

 brown. Elytra with very prominent shoulders, the anterior side 

 of the subconical projection oblique ; centrobasal ridges slightly 

 elevated, but not tuberculated ; dark brown, sprinkled with ful- 

 vous ; behind the middle a pale oblique belt or broad triangular 

 spot darker in the middle, thence to the apex light brown with 

 darker lines and spots. Body beneath tawny brown, middle of 

 abdomen black. Legs black, apex of thighs fulvous, claw-joint 

 red, apex black. Posterior tibiae in the male dilated at the apex; 

 supplementary antennal joint in the same sex very short or 

 wanting. 



Ega. Rather variable in the colour of the posterior part of 

 the elytra, the pale belt being sometimes extended into a large 

 triangular patch, and sometimes blended with the pale-brown 

 shade of the apical half of the wing-cases. The species seems 

 to be very closely allied to H. subfasciata, Thomson (Classif, des 

 Ce'ramb. p. 118). 



5. Hypselomus rodens, n. sp. 



H. oblongus, nigro-fuscus, carneo-fulvo strigatus ; thorace supra baud 

 tuberculato ; elytris bumeris apice truncatis, postice uncinatis, 

 pone medium fascia obliqua pallida. Long. 6 lin. $ . 



Head dingy black, crown sprinkled with reddish tawny. An- 

 tennse black, sprinkled with tawny ; base of each joint, from the 

 fourth, pale. Thorax convex above, and free from tubercles, 



