418 Philippine Journal of Science 1919 



b 1 . Prescutellar bristles well developed; third abdominal segment of male 

 ciliated; face of male with two black bands, that of female with 



two black spots C. cilifer Hend. 1 ' 



o J . Fourth abdominal segment without complete black crossband or, rarely, 

 with a very narrow one; last two segments of abdomen with a black 

 longitudinal middle stripe; oval patches of last abdominal segment 

 never black; species of greater size. 



f. Scutellum with but a pair of bristles, the apical one. 



g x . Two pairs of lower fron to-orbital bristles; hind cross vein 

 not broadly margined with fuscous; mesonotum without 

 a bright yellow postsutural middle stripe. 

 h l . Costal dark border of wing not much dilated at end 

 and not reaching fourth vein apically; frons narrow; 

 third abdominal segment of male ciliated (in one 

 species the male is unknown). 

 x 1 . Face with the usual two black spots; no anal bulla 

 on wings. 

 f. Yellow lateral stripes of mesonotum broadly inter- 

 rupted before suture; anal brown stripe of wings 

 well developed. 

 8?. Vertical, thoracic, and scutellar bristles pale 

 yellowish; occiput reddish; mesonotum partly 

 reddish on breast and on pleura; mesophragma 

 reddish in the middle; femora and tibia? entirely 

 reddish; costal border of wings narrow and 



rather pale C. dorsalis Hend. 



kr. The above-named bristles more or less darkened 

 or even blackish; mesonotum and mesophrafrma 

 entirely black; tibiae black, at least those of hind 

 pair of legs; costal border broader and more 

 intensely black. 

 P. Costal border toward middle not extending beyond 

 second longitudinal vein or only a little so, the 

 submarginal cell being in greatest part hyaline 

 or only yellowish. 

 m 1 . Occiput reddish, with more or less distinct 

 fuscous spots in the middle; femora entirely 

 yellowish or only those of front pair of legs 

 darkened at end on the outer side; sub- 

 marginal cell often yellowish below costal 

 border; of greater size. 



C. occipitalis var. nov. 



m. Occiput black in the middle, with reddish 



borders; all femora more or less blackened 



at ends; submarginal cell quite hyaline 



below costal border; of smaller size. 



_ _ C pedestris Bezzi. 



I. Costal border extending to third longitudinal 



vein, submarginal cell being thus filled entirely 



■ From Formosa, included here for comparison only. 



