Longicornia Malay ana. 615 



in the last, but clear yellow instead of white, and the first 

 segment more or less glabrous at the base, and fulvous- 

 red ; pygidium covered with a dense yellowish pubes- 

 cence j femora and tibiae reddish, tarsi dark brown; 

 antenuge reddish, the last four or five joints smoky. 

 Length 6-S lines. 



In the pattern of its coloration this resembles the last, 

 except that the first segment of the abdomen has a yel- 

 lowish glabrous base, and that all the femora and tibiae 

 are reddish; the broader prothorax and more obliquely 

 truncate elytra also distinguish it. 



Perissus. 



Perissus, Chevrolat, Clyt. d'Asie, p. 10 ; Lacordaire, 

 Gen. ix. 79. 



Caput antice verticale, inter antennas sulcatum. An- 

 tennm basi haud approximatse, ( S ) corpore fere long- 

 iores, lineares; articulis 3-10 subsequalibus. Fro- 

 thorax breviter ovatus, disco granulate. Elytra vix 

 elongata, supra depressa. Pedes antici breviusculi, 

 intermedii longiores, postici elongati ; tarsi postici 

 articulo basali cseteris simul sumptis duplo longiore ; 

 caetera ut in Xylotrecho. 



The females have the antennse much shorter, and fre- 

 quently claviform or gradually thickened outwards, and 

 the posterior femora do not extend beyond the elytra. 

 The genus seems to be best distinguished from Xylotre- 

 chus by the breadth of the head between the antennae, 

 and by the absence of carinas. 



Perissus glaucinus. 



Clytus glaucinus, Boisduval, Voy. de I'Astrol. ii. 483, 

 pi. ix. fig. 22 ; Laporte et Gory, Mon. Clyt. p. 98, pi. 

 xviii. fig. 117. 



Perissus femoralis, Chevrolat, Clyt. d^Asie, p. 12. 



P. cinereus; prothorace in medio nigro-bimaculato ; 

 elytris fusco- vel brunneo- trifasciatis, fascia prima 

 aliquando fere obsoleta, secunda obliqua, tertia ad 

 suturam stepe interrupta, apicibus extus spinosis; 

 femoribus rufis. 



