16 INSECUTOR INSCITI/E MENSTRUUS 



above than below ; facialia bare except three or four bristles close to vi- 

 brissae. Cheeks of male a little less thain one-heJf eye-height, being 

 rather more than two-fifths ; those of female a little nanower in proportion, 

 being about or hardly two-fifths. Parafrontals slightly or hardly wider 

 than frontalia in female, hardly as wide behind in male, with fine sparse 

 hairs. Second antennal joint rather elongate ; third from hardly twice to 

 slightly more than twice as long, but little longer in male than in female, 

 flattened or compressed laterally, wide, not bowed on front edge, rather 

 obliquely truncate apically. Arista moderately long, microscopically pu- 

 bescent, thickened nearly its whole length only excepting tip, the second 

 joint hardly twice as long as wide. Epistoma prominent, the vibrissal 

 insertion well removed from oral meurgin and even distinctly above its 

 middle. Facial profile gently receding, the length of head at vibrissae 

 about three-fourths that at aintennal insertion. Eyes thickly long-haiiry. 

 Proboscis fleshy with large labella, about as long as head-height when 

 extended ; palpi rather short, straight, filiform, surmounted by several 

 straight fine bristles. 



Three sternopleural and three postsutural bristles. Scutellum with four 

 lateral pairs of strong bristles, the two middle ones of each side approxi- 

 mated and both inserted on edge of scutellum like the posterior one, 

 while the anterior one is removed from edge, the extra bristle being the 

 anterior of these two middle ones and shorter than the others ; a rather 

 long strongly decussate apical pair about as long as the extra lateral 

 bristle, and a somewhat shorter separated discal pair. Abdominal macro- 

 chaetae same in both sexes ; a lateral marginal macrochaeta on first two 

 segments, no median on first, small discal median pair on second and 

 stronger discal median pair on third, still stronger median maurginal pair 

 on second, marginal row of eight or ten on third, weaker discal row and 

 marginal row on anal segment. Tibiae spined, the spines of middle 

 tibiae strong and long. Claws of female about as long as last tarsal joint, 

 those of male slightly longer. Apical cell narrowly open well before 

 wing-tip ; apical crossvein elongate and nearly parallel with hind wing 

 margin, fourth vein continued in long stump, hind crossvein sinuate and 

 well approximated to apical crossvein. Third vein bristly fully halfway 

 to small crossvein. Costal spine short. 



Reproductive habit, larviposition probably on or near host. 



Type, Gymnochaetopsis analis, new species. 



(To be continued.) 

 Dale of publication, January 31, 1914. 



