274 My. F. Walker's Abstract of Br. Maijrs 



-f- Antenna? of the usual thickness. 



+ Hind border of the second alidoniinal segment not 



much curved in the female. 

 § Apical joints of the antenme often slightly brownish 



in the female. raricdtlis. 



§§ Apical half of the antennic dark l)rown in the 



female. ((2)icalis. 



11 Hind border of the second abdominal segment 



much curved in the female. rotundivcntris. 



•f-f Antennae thickened. inrrassatus. 



** IMesothorax transversely wrinkled or coriaceous. 



Furrows of the front always extending to the 



ocelli. 

 -f- Hind femora in the female at least dark coloured. 



I Body deep black. 



ij Wings with more or less pale veins. TscJicki 



§§ Wings with brown veins. tristis. 



II Body not deep black, 

 § Abdomen black. 



* Wings with extremely pale veins. jmnicornis. 

 ** Wings with testaceous veins. (ilhijn's. 



*** Wings with brown veins. 

 0. Second joint of the antenna? a little longer tlian thick 

 in the male, distinctly so in the female. ncrrosus. 



00. Second joint of the antennre as long as thick or a little 

 thicker in the male, as long as thick or a little longer 

 in the female. rulgaris. 



§§ Abdomen ferruginous or castaneous. rarius. 



■f -f Femora and tibia? pale in botli sexes. 

 I Head reddish testaceous. facialis. 



II Head l)lack. radiatus. 



h. Third joint of the antenna^ mucli swollen in the 

 male. 



* Third joint of the antenna' excavated on the outer 



side in the male. tlianmaccra. 



* Third joint of the antenna^ only slightly emarginate 



on the outer side in the female. j^/^/y^'occrui'. 



SYNOPSIS OF THE SPECIES OF SAPIIOLYTUS. 



A. Antennre lo-jointed in the male. conuatiis. 



B. Antenna^ 14-jointed in the male. 



