64 Journal New York Entomological Society. [Vol. xxiii. 



six above, and one or two more below; anal segment with short mar- 

 ginal bristles, and still shorter erect discal bristly hairs. Wings reach- 

 ing beyond tip of abdomen, rather broad, costal spine exceedingly 

 minute and practically undeveloped ; apical cell very narrowly open a 

 little before wingtip; fourth vein abruptly rounded at bend, its last 

 section weakly bowed in ; hind crossvein sinuate and nearly in middle 

 between small crossvein and bend of fourth vein ; two or three bristles 

 at base of third vein, rest of veins bare. Claws of both sexes very 

 short and delicate. Legs not elongate; hind tibiae of both sexes weakly 

 pectinate, with a slightly longer bristle near middle. 



Reproductive habit, leaf-oviposition of microtype eggs. 



Type, Dimasicera nitida n. sp. 



This genus has but two spermathecse. 



Dimasicera nitida new species. 



Length of body, 4 to 5 mm. ; of wing, 3 to 4 mm. Five females and 

 fifteen males, taken on herbage in valley of Rio Chira, near Sullana, February 

 17, 19 1 2. Both sexes vary about equally in size. 



Shining black ; face, front and orbits silvery in oblique view ; frontalia 

 soft dark brown, occiput soft blackish ; the silvery of parafrontals and para- 

 facials rather more conspicuous in male. Occipital hairs scant, blackish. 

 AntennjE and palpi soft black. Thorax faintly silvery, the four vitts narrow 

 and faint, pleurae more strongly silvery. Second and third abdominal seg- 

 ments narrowly silvery on front margin. Wings clear. Hind scale of tegulse 

 smok-y-yellowish to yellowish-smoky, the small front scale white except on 

 hind margin. 



Type, TD4075 (fly, egg, maggot, reproductive system). A cotype female 

 is TD4076. 



Subfamily Salmaciin^. 

 Atacta brasiliensis Schiner. (Synonym, Atacia apicalis Coquillett.) 



It seems practically certain that Coquillett's species is a synonym 

 of Schiner's. As all the descriptions are brief and defective, the 

 following notes may be supplied: Second and third antennal joints 

 normally equal in both sexes, the antennae being slightly longer usually 

 in the female. Male front at vertex only one third of eye-width or 

 even less, female front nearly twice or fully one and two thirds times 

 eye-width. Female with four proclinate orbital bristles on each side, 

 and one or two reclinate ones behind them. Three strong marginal 

 pairs of scutellar bristles, the apical pair slightly decussate. Four to 

 six sternopleural and four postsutural bristles. 



