﻿54 Journal New York Ent. Soc. [Voi. in. 



rectly credits the genus to Macquart. Brauer and Bergenstamm commit 

 another error in giving as the type of this genus the Tachina latifrons 

 Meigen, a species neither described nor mentioned by Macquart at the 

 time of establishing this genus, and hence cannot by any possibility be 

 regarded as the type of this genus. Macquart accompanied his descrip- 

 tion with a figure of Tachina bicolor Meigen, and expressly refers to it 

 at the end of the description ; this species, therefore, must be the true 

 type of Thryptocera. In accordance with these facts I have given this 

 genus the place it occupies in the above table, and refer the following 

 species to it : 



Thryptocera dunningii, sp. nov. 



$ — Head black, front at vertex broader than either eye, vitta next the antenna? 

 sub-equal in width to either side of the front, frontal bristles descending nearly to tip 

 of second antennal joint, two pairs of orbital bristles ; sides of face bare, each one- 

 ninth as wide as the median depression ; vibrissee inserted near the oral margin, 

 ridges bristly on lowest third, cheeks one-seventh as broad as height of eyes. An- 

 tennae black, as long as the face, third joint three times as long as the second ; arista 

 thickened on the basal third, the penultimate joint slightly longer than wide. Pro- 

 boscis black, the last section much shorter than height of head, labella and palpi 

 yellow. Thorax and scutellum black, lightly blueish white pollinose, three post-sutural 

 maci-ochretce ; scutellum bearing three long lateral and a scarcely smaller apical pair. 

 Abdomen shining black, base of the third segment white pollinose ; first segment des- 

 titute of dorsal macrochretce, second with a marginal pair, third with a marginal row 

 of eight, fourth with a marginal row of six; genitalia sub-cylindrical, sometimes pro- 

 truding three-fourths of the length of the fourth abdominal segment. Legs black, 

 claws and pulvilli much shorter than the last tarsal joint. Wings hyaline, third vein 

 bristly almost or quite to the small crossve n, the others bare, apical cell open slightly 

 before the wing-tip, hind crossvein near last third of the distance between the small 

 crossvein and the bend, the latter arcuate. Length 5 mm. 



Illinois (Dr. Nason) and Connecticut. Six specimens. Those 

 from Connecticut were recieved from Mr. Ralph Dunning, for whom 

 the species is named. 



Admontia pergandei, sp. nov. 



9 — Wholly black, including the palpi. Front at vertex nearly twice as wide as 

 either eye, vitta next the antennas sub-equal in width to either side of the front, 

 frontal bristles descending to tip of second antennal joint, two pairs of orbital bristles; 

 face in profile slightly convex, each side one-third as wide as the median depression, 

 covered on the upper part nearly as far as the lower end of eyes with short black 

 bristly hairs, ridges bristly on the basal two-thirds, cheeks slightly over half as broad 

 as the eye-height. Antennns nearly as long as the face, third joint five times as long 

 as the second, of nearly an equal width, about six times as long as broad ; arista 

 thickened to slightly beyond the middle, the penultimate joint scarcely longer than 



