160 cuRCULio>'ii^.i:. 



of Astyciis, with which indeed Schunherr associated them. Several' 

 of them also exhibit traces of the small basal lateral notch on the 

 elytra, which is characteristic of the genera having functional 

 wings; while the fact that the episternum is in no way fused 

 with the metasternum suggests that the power of flight has 

 been lost somewhat recently. But these species can at once be 

 distinguished from Astycus by their non-functional hind wings, 

 by the comparatively small size of the epimera of the meso- 

 sternum and the relatively shorter metasternum. 



Throughout most of the genus the external structure is very 

 uniform, and an examination of the S genitalia has been 

 necessary ; but in many cases colour appears to furnish quite a 

 reliable specific character. 



Key to the Species. 



1 (28) Second ventral segment longer 



than 3+4, the suture between 

 segments 1 and 2 evenly marked 

 throughout ; iutercoxal process 

 of venter rounded or subangu- 

 late. 



2 (27) Corbels of hind tibi;B not clothed 



with long hairs. 



3 (26) Hind tibiee not denticulate inter- 



nally ; the two basal joints of 

 fimicle subequal ; rostrum not or 

 but very slightly longer than 

 broad. 



4 (11) Elytra with more or less metallic 



green scaling. 



5 (8) Apices of elytra not miicronate in 



the cJ and scarcely so in the J • 



6 (7) Scaling grey or brown, sometimes 



with a pale metallic green re- 

 flexion ; rostrnm impressed dor- 

 sally ; the basal margin of the 

 elytra ver}' little raised, the 

 humeral projection continued 

 right up to the base lividus, sp. n., p. 166. 



7 (6) Scaling bright green or bluish, the 



inflexed margins yellowish, elytra 

 with a common yellow patch at 

 base and apex of intervals 4 and 5 : 

 rostrum plane dorsally : basal 

 margin of the elytra distinctly 

 raised, the humeral projection 

 separated from the actual basal 

 margin f rater, sp. u., p. 164. 



8 (5) Apices of elytra distinctly mucro- 



nate in both sexes ; scaling bright 

 green, with the base of pro thorax 

 and the inflexed mar-gins of pro- 

 thorax and elvtra vellowish. 



