NO. 1938. THE DIPTEROUS FAMILY PHORID/E—MALLOGH. 451 



short, closely placed, strong hairs; hind femora strong, hind tibia with 

 the row of bristles on the antero-dorsal surface confined to the basal 

 half (4-5), those on the postero-dorsal surface (9-10) long and strong; 

 costa to about middle of wing, first division equal to the other two 

 together, fringe moderately long; fourth vein leaving the third with 

 a gentle curve and running with a slight upward curve to much in 

 front of the wdng tip, where it recurves and runs somewhat obsoletely 

 along the margin of wing to nearer the tip ; halteres yellow. 



Length, 3 mm. One male, one female, Las Vegas, New Mexico 

 (August 14, 1901), H. S. Barber. 



This very distinct species comes nearest to halictorum Melander and 

 Brues, but there should be no difficulty in separating the two. 



Type.— Cat. No. 14842, U.S.N.M. 



APmOCH^ffiTA GIRAUDH Egger. 



Recorded as American, but those specimens standing as such in the 

 collection^ are widely different from the European species. The 

 typical giraudii is 2-2 1 mm. in length; those specimens are 1-1 1 mm. 

 In no respect do they agree with the description of the species they are 

 standing as. The European insect is very variable in color. The 

 thorax and abdomen are generally black, though the former is some- 

 times reddish or yellow; the frons is gray with a yellowish band above 

 the insertion of the antennae,. the antennse are black, though m the 

 female the third joint is sometimes orange; the male hypopygium is 

 mostly whitish, and the ovipositor is whitish in the female, showing 

 a marked contrast with the black abdomen. I have not seen Ameri- 

 can representatives of this species, and have been unable to fuid the 

 specimens on which Coquillett based his determination. It had 

 better be consigned to the list of unrecorded or doubtful species. 



APmOCH.aETA PICTA Lehm. 

 Plate 36, fig. 1. 



A species closely allied to scalaris Loew, but easily separated by the 

 presence of the row of setulse on the antero-dorsal surface of the hind 

 tibia. The two specimens in the collection are in all respects identical 

 with European examples, except that the anterior pair of scutellar 

 bristles are rather weaker. In Brues's paper he omits any mention of 

 the triangular black lateral patches on the abdomen in this species. 

 The first section of the costa is as long as the other two together. The 

 frontal bristles are arranged as in sketch. The mesopleura is bare, 

 the frons, thorax, and abdomen are yellow, the latter with fore-mar- 

 ginal black bands which are triangularly dilated laterally; sometimes 

 nearly the whole segment is suffused except the hind margin; the sixth 



^A. chactoncura, new species, p. 490. 



