62 Journal New York Entomological Society, ["^'o'- ^xm. 



half as long; one short suberect apical nondecussate pair, and one 

 separated short discal pair. First abdominal segment with a short 

 lateral macrochaeta, and an atrophied median marginal pair hardly 

 stronger but longer than the bristly hairs ; second segment with an 

 erect strong median marginal pair, and one or more lateral ; third 

 segment with erect marginal row of eight above and more below ; 

 anal segment with erect short marginal, and erect discal rather irregu- 

 larly placed. Scutellum with sparse erect hairs, abdomen with ap- 

 pressed hairs on first three segments. Hind tibi?e pectinate., claws 

 short. Apical cell narrowly open a little before wingtip, costal spine 

 almost completely atrophied ; fourth vein rounded at bend, last section 

 gently bowed in ; hind crossvein only a little nearer to bend than to 

 small crossvein and almost straight. 



Reproductive habit, leaf-oviposition of subcylindrical microtype 



Type, Cylindroniasiccra prima n. sp. 



Cylindromasicera prima new species. 



Length of body, 6 mm. ; of wing, 4.5 mm. One female, taken on herbage 

 in the valley of the Rio Chira near Sullana, February 17, 1912. 



Obscure blackish, silvery to brassy pollinose. Face and front silvery, the 

 parafrontals faintly golden on inner half or so. Frontalia dark brown. An- 

 tennae dusky, except base of third joint and end of second pale yellowish. 

 Palpi dusky. Occiput dusky-cinereous, with sparse grayish pile. Pleurae, 

 thoracic scutum and scutellum silvery with a golden shade ; the two inner vittse of 

 mesoscutum narrow, the outer ones heavy and interrupted. First abdominal 

 segment blackish, faintly silvery in some lights; second and third segments 

 faintly golden, slightly more so than the thorax, their hind margins obscurely 

 and indefinitely blackish ; anal segment wholly a little more deeply golden. 

 Legs wholly blackish. Wings clear; tegulje white, the hind scale slightly 

 tinged with tawny on border. 



Type, TD4079 (fly, uterus, slide of eggs and maggots). 



Subfamily Masiceratin.e. 



DIMASICERA new genus. 



Small shining species. Front of female about width of one eye or 

 slightly wider, and nearly same width throughout, being about equal 

 to facial width ; that of male width of one eye or less posteriorly, and 



