66 Journal New York Entomological Society, t^'o^- xxiii. 



pectinate, with a longer bristle near middle and another near tip. 

 Apical cell widely open very distinctly before wingtip but only a little 

 removed from same. Apical crossvein bowed in, its junction with 

 fourth vein approximated to wing-margin; fourth vein continued in 

 an extremely short stump, hind crossvein nearer to apical crossvein. 

 No costal spine. 



Reproductive habit, larviposition probably in choria as near to the 

 host as the fly can approach. 



Type, Parathcrcsia signifcra n. sp. 



Paratheresia signifera new species. 



Length of body, 8.5 mm. ; of wing, 7 mm. One female, taken on trunk 

 of tamarind in valley of Rio Chira near Sullana, March 2, 1912. 



Parafrontals and parafacials thickly light golden pollinose ; frontalia 

 light brown with a tawny-gray sheen, facial plate tawny-silvery antennae and 

 palpi reddish-yellow, arista black, cheeks and orbits faintly golden, occiput 

 cinereous. Pleura silvery, mesoscutum and scutellum thickly cinereous pol- 

 linose, mesoscutum with three heavy complete uninterrupted shining black 

 vittse. Abdomen back, shining, with silvery pollen above and below leaving 

 the hind borders of segments and a faint median vitta blackish ; dorsum and 

 tip of anal segment yellowish-red and without pollen, the base obscurely 

 blackish. Legs blackish ; wings clear, tegulae white. 



Type, TD4082 (fly, reproductive system, slide of maggots). 



Subfamily Dexiin^. 

 Tribe Dexiini. 



Aglummyia percinerea flavida new subspecies. 



Length of body, about 8 to 8.5 mm.; of wing, 7 to 8 mm. Chosica, about 

 3,000 feet, one female February 14, and one male October 19, 1913. 



Differs from the typical form in the tawny-yellowish abdomen in male 

 showing a broad median vitta of brown on first two segments, spreading over 

 all of last two segments except front corners of third. In the female the 

 brown covers also the second segment. The front shows no yellowish tinge. 

 Tibiae of female concolorous with femora. The size is larger. 



Type, the female. The male is TD4188 (fly, male reproductive system). 



Tribe Echinodeximi. 

 TROPIDODEXIA new genus. 



Allied to Bathydcxia, and having nearly same style of spinelike 

 bristle setting as Tropidopsis of the Pyrrhosiinse. Description is from 



