BEEBPTEHYX. 333 



The Mictaria liave the anterior femora beneath near the apex 

 generally distinctly and acutely spined, or armed with two spines, 

 or unarmed or obsoletely shortly spined ; intermediate femora in 

 the males rarely distinctly spined ; posterior femora spinose, 

 generally incrassated and in the males profoundly thickened. 



Synoi>sis of Genera. 



A. Lateral angles of pronotum strougly dilated 



aud produced anteriorly before apex of 



head Derepteryx, p. 333. 



B. Lateral pronotal angles not produced before 



apex of head. 



a. Posterior femora in both sexes tuberculate 



on inner margins, tubercles small and 

 irregular. 

 a. Femora above with a small lobate pro- 

 cess near apex Helcomeria, p. 335. 



h. Femora above without a lobate process 

 near apex. 

 a'. First joint of antennse uot longer 

 than fourth ; posterior tibiae in male 



spined and dilated Prionolomia, p. 33G. 



. b^. First joint of antennae longer than 

 fourth ; posterior tibife in male 

 neither spined nor prominently 

 dilated Elasjiomia, p. 339. 



b. Posterior femora granulate on inuer 



margins, but not tuberculate. 



a. Posterior tibiae on both sides moderately 



dilated. 

 «'. Abdomen in male strougly tuber- 

 culate. 

 «^. Membrane shorter than abdomen, 



abdominal apex truncate Aurelianus, p. 340. 



h-. Membrane reaching apex of ab- 

 domen, which is rounded Mygdonia, p. 340. 



b^. Abdomen not tubercidate in either 



sex Ochrochira, p. 341. 



b. Posterior tibiag not dilated above. 



«'. Posterior tibiae dentate on inner 



margins in male 3Iictis, p. 344. 



b'^. Posterior tibiae not dentate in either 



sex Anoplocnemis, p. 346. 



Genus DEREPTERYX. 



Derepteryx, White, Cliarlestvorth'' s May. Nat. Hist. (2) iii, p. 542 



(1839) ; id. Tr. E. S. iii, p. 92 (1842). 

 Derapteryx, Westic. in Hope Cat. ii, p. 8 (1842). 

 Subg. Pterygomia, Stdl, En. Hem. idi, p. 40 (1873). 



Type, D. grayi. White. 



Distribution. jS^.E. India, Burma, China, Borneo. 

 Lateral angles of the pronotum produced into broad lunately 

 curved processes extending beyond the apex of the head, these 



