58 



F. Hind angles of prothorax acute 

 FF. Hind angles of prothorax obtuse 

 (much rounded ofif) 

 DD. Prothorax in hinder part distinctly ex- 

 cised, — the basal edging not continu- 

 ous round the excision. 

 E. A distinct angle immediately in front 

 of the excision. 

 F. The prothorax considerably nar- 

 rowed in front. 

 G. Basal joint of hind tarsi very short, 

 not longer than apical spur of tibiae 

 *H. The angle at front of proth- 

 oracic excision strongly denti- 

 form. 

 *HH. The angle at front of excision 

 not dentiform ... 

 GG. Basal joint of hind tibiae consider 

 ably longer than apical spur of 

 tibiae 

 FF. The prothorax as wide in front as 

 at base 

 EE. No angle at front of prothoracic 

 excision 

 CO. Hind tibiae angularly dilated externally 

 at about the middle of their length. 

 D. Prothorax very sparsely punctulate ... 

 DD. Prothorax closely punctulate 

 BB. Upper surface clothed with long erect hairs. 

 C. The uppermost external tooth of front 

 tibiae placed at about the middle of their 

 length 

 CC. The uppermost external tooth of front 

 tibiae placed much below the middle of 

 their length 

 AA. A quill-like appendage at the base of each 

 claw. 

 B. Prothorax not excised in front of the hind 

 angles. 

 C. Joints of the antennal club shorter than 

 the rest of the antennal joints together. 

 D. Uppermost tooth of the front tibiae placed 

 at about the middle of the length of 

 the tibiae. 

 E. Base of prothorax strongly sinuate on 

 either side, so that the angles are 

 acute. 

 F. Puncturation of prothorax not par- 

 ticularly coarse. 

 G. Interstices of the elytral striae 

 wide (each with two rows of 

 punctures) ... 

 GG. Interstices of elytral striae much 

 narrower, — the strij© being 

 much more numerous 



longitarsis, VVaterh. 

 rufus, Hope. 



acutangulus, Waterh. 

 imitator, Blackb. 



rugosicoUis, Macl. 

 modicus, Blackb. 

 hopeaiius, Westw. 



tibialis, Blackb. 

 riigosipes, Blackb. 



pilosus, Blackb. 

 variolostis, Macl. 



sordidus, Boisd. 

 midtistriatus, Blackb. 



* These species may be considered intermediate between the group in which the pro- 

 thorax is excised and that in which it is merely sinuate in its hinder part. 



