110 OERAMBYClD.i:. 



Si/nojysis of the Genera. 



A. Head -svitli a deep arcuate impression 



between clypeus and front ; mandibles 



of (5 with dorsal crest or cai'ina Gxatholea, p. 110. 



B. Head not deeply impressed between cly- 



peus and front ; mandibles without 

 dorsal crest or carina. 



a. Anteunal supports depressed; prosternal 



process pxadually sloped posteriorly 



and slightly dilated at the end '. Hesperophanes, p. 112. 



b. Antenna! supports sharply angulate or 



spined, especially in the c^ , 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 SxROMATirii, p. 114. 



b. Prothorax of r? without tomentose 



depressions on the sides Zoodes, p. 115. 



Genus GNATHOLEA. 



Gnatholea, Thorns. JEssai Clnss. Cercnnb. p. 375 (1861) ; Lacord. 

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



Type, G. ehurifera, Thorns. 



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

 aud Philippine Islands. 



Head slightly rather broadly concave between the autenni- 

 ferous tubercles ; front short subvertical, separated from the 

 clvpeus 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 S ; mandibles strong, sub- 

 horizontal or oblique, furnished either with a dorsal carina or 

 crest in the 6 , much shorter, oblique, with very feeble dorsal 

 carina in the $ ; gula without mentigerons process. xlntennte 

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

 length to the body in the $ ; third jouit 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 d ', first joint of hind tarsus 

 shorter than the second aud third united. Intercoxal process 

 of prosternum strongly but not abruptly sloped posteriorly, feebly 

 dilated near the end. 



