110 OERAMBYCID^E. 



Synopsis of the Genera. 



A. Head with a deep arcuate impression 



between clypeus and front ; mandibles 



of c? with dorsal crest or carina GNATHOLEA, p. 110. 



B. Head not deeply impressed between cly- 



peus and front ; mandibles without 

 dorsal crest or carina. 



a. Antennal supports depressed ; prosternal 



process gradually sloped posteriorly 



and slightly dilated at the end HESPEROPHANES, p. 112. 



b. Antennal supports sharply angulate or 



spined, especially in the tf , on the 

 inner side ; prosternal process more 

 abruptly sloped posteriorly and nar- 

 rowed at apex. 



a. Prothorax of <5 with a large tomen- 



tose depression on each side STROMATIUM, p. 114. 



b. Prothorax of <5 without tomentose 



ZOODES, p. 115. 



Genus GNATHOLEA. 



Gnatholea, Thorns. Essai Class. Ceramb. p. 375 (1861) ; Lacord. 

 Gen. Coleopt. viii, p. 284 (1869). 



Type, G. eburifera, Thorns. 



Range. Northern India, Burma, Siam, Malay Peninsula, Java, 

 and Philippine Islands. 



Head slightly rather broadly concave between the antenni- 

 ferous tubercles ; front short subvertical, separated from the 

 clypeus by a rather deep arcuate groove ; eyes deeply emarginate, 

 with narrow upper and large lower lobe ; genae short, strongly 

 angulate and prominent below in the <3 ; mandibles strong, sub- 

 horizontal or oblique, furnished either with a dorsal carina or 

 crest in the c? , much shorter, oblique, with very feeble dorsal 

 carina in the $ ; gula without mentigerous process. Antennae 

 one-third or so longer than the body in the cf , about equal in 

 length to the body in the $ ; third joint longer than the fourth, 

 fourth to tenth subequal or gradually diminishing in length. 

 Prothorax transverse, somewhat rounded at the sides. Elytra 

 nearly parallel-sided, rounded posteriorly and armed each with a 

 short sutural spine ; sometimes truncate and bispinose at the apex. 

 Legs moderately long, slightly compressed ; front femora sub- 

 fusiform, the others sublinear, the hind pair reaching almost to 

 the apex of the elytra in the rf; first joint of hind tarsus 

 shorter than the second and third united. Intercoxal process 

 of prosternum strongly but not abruptly sloped posteriorly, feebly 

 dilated near the end. 



