176 Journal New York Entomological Society. [Voi. v. 



Length, 7-8 mm. Differs from all described species by the whitish markings 

 of the thorax. Face, cheeks and front light yellowish, covered with a silvery- white 

 bloom ; a little less than posterior half of front abruptly velvety dark brown or black- 

 ish, the anterior portion of front being more yellowish than the face. Antennae 

 brown, the tip of second joint often with a yellowish tinge, and the third joint with a 

 reddish-brown tinge. Occiput fuscous or blackish, with some thin blackish hairs. 

 Thorax and scutellum soft velvety brownish-black, with a medain pair of rather 

 closely approximated ashy-whitish vittse extending little more than half way or at 

 most two-thirds way to scutellum, and with'silvery-whitish pollinose spots as follows : 

 A round one on humeri, a transversely elongate one just back of humeri cleft and 

 widened below and notched anteriorly ; the whole posterior border of scutellum, 

 widest in the middle ; and two rather rounded spots, forming really one longitudinally 

 elongate marking but divided by a suture, immediately in front of each lateral corner 

 of scutellum. First abdominal segment soft brownish-black, with a few black hairs 

 on sides ; second segment black on basal half on sides, but on only front border in 

 middle, and with a pair of transversely elongate narrowly coalesced oval black spots 

 near hind margin, the rest of middle portion of segment being of a shade between 

 fuscous and golden yellow, the posterior half of sides broadly deep golden-yellow, 

 pollinose continued narrowly along hind border, the black of anterior lateral angles of 

 segment with a patch of black hairs; third segment wholly deep golden yellow polli- 

 nose, except a pair of large sublunate black spots rather deeply notched on outside, 

 widened behind, reaching anterior margin, coalesced anteriorly, separated posteriorly 

 by a golden-yellow median line running half way to front border, narrow hind border 

 of whole segment golden-yellow; fourth and fifth segments wholly deep golden-yel- 

 low, except a pair of well-separated median black spots near hind margin, those on 

 fourth segment being of good size, those on fifth small and dot-like ; sixth segment 

 wholly deep golden-yellow ; two segments composing anus blackish, with a silvery 

 sheen. Legs blackish brown, the whole with a considerable silvery sheen especially 

 the under sides of tibiae which are more yellowish, pulvilli and claws except the tips 

 yellowish. Wings a little fuscous, the antero-basal half yellow. Halteres pale-yel- 

 lowish. The black of abdomen has a slight olive tinge ; and in old specimens the 

 deep golden-yellow pollen sometimes becomes greased, and shows then only a black- 

 ish color. 



TACHINID^. 

 Ocyptera euchenor JVa/^. 



Eleven specimens, Brownsville, as follows: One <? , June 22, on 

 flowers of Lippia lanceolata Michx. The front in this specimen was not 

 fully developed, indicating recent issuance from pupa. Six $ 's and 

 four 9 's, June 24, also on flowers oi Lippia lanceolata. 



Length of $ 's 8-9 mm. ; of 9 's~8i4-9 mm. Although there is 

 only one millimeter difl'erence in the length of the $ 's, there is a 

 marked difference in their comparative size and stoutness. Nearly all 

 of the specimens have the prevailing color of the abdomen red, but one 

 9 has it more black than red. Most of the specimens, including all 



