NO. 1225. SOME NEW DIPTERA—COQUILLETT. 605 



Thorax black, the anterior corners yellow. Head black, antenna} and mouth, 

 parts brown, mesonotum gray pruino.«e, scutelluni yellow, the middle brown, 

 abdomen black, somewhat velvety, narrow hind margins of the segments 

 yellow, legs dark yellowish, knobs of halteres l)rown, wings hyaline, third 

 A-ein extending close to first and to costal vein, at its middle connected with 

 first by a cross vein; length, 1 to 1.5 mm rinciuK, new species. 



Three female specimens, collected by Mrs. A. T. Slosson, who writes that she 

 braved their l)iting in order to collect them. Lake Worth and Biscayne Bay, 

 Florida. 



Ti/jH'.— Cat. No. 5475, U.S.N.M. 



22. Hind tarsi each bearing a single very long claw which bears a small claw near 



base of under side, empodia wanting 25 



Hind and other tarsi each bearing the usual pair of claw.-^ of an equal length. 23 



23. Empodia wanting, last tarsal joint at least twice as long as the preceding 24 



Empodia large, obovate, last tarsal joint only slightly longer than the preceding. 



Head black, face, mouth parts, and antennt* brown, hairs of male antennae 

 black, their apices yellowish, or almost wholly yellow, eyes contiguous; body 

 black, the scutelluni and genitalia of male brownish yellow, mesonotum 

 slightly polished, knobs of halteres white, legs yellow, femora and tarsi not 

 spined on under side, tarsal claws simple; wings hyaline, first vein nearly 

 reaching middle of third, the latter beyond its base narrowly separated from 

 the first, before apex of the latter connected with it by a cross vein, ending 

 near three-fourths length of wing; fourth forking slightly beyond the small 



cross vein; length, 2 mm fuKculus, new species. 



Three males and four females. Washington, District of Columbia (May 12, F. C. 

 Pratt); Riverton, New Jersey (April 30, C. W. Johnson); Mount Washington, 

 New Hampshire (Mrs. A. T. Slosson); and Waldoboro, Maine (J. H. Lovell), 



Ti/pe.— Cat No. 5476, U.S.N.M. 



24. Mesonotum opaque, densely light gray pruinose. Head black, eyes contiguous, 



mouth parts and basal joint of antennte lirown (remainder of antennte want- 

 ing); thorax black, pleura thinly gray pruinose, scutelluni brownish yellow, 

 abdomen brown, rather densely whitish pruinose, legs blackish brown, tarsi 

 yellow, apex of each joint and whole of last one black, claws very long, neaidy 

 straight, and with a pair of small claws near their bases, last tarsal joint bear- 

 ing many long spinous bristles on the under side, femora slightlj^ thickened 

 toward their apices, each bearing 3 or 4 short spinous bristles toward apex of 

 under side; wings hyaline, first vein almost reaching middle of third, the lat- 

 ter widely separated from the first, before apex of latter connected with it by 

 a cross vein, reaching about five-sixths length of wing, fourth forking slightly 



before the small cross vein; length, 3. 5 mm sckwarzii, new species. 



A female specimen, collected May 5 by Mr. E. A. Schwarz, for whom this fine 

 species is named. Sharpsburg, Texas. 



r>/pe.—Csit. No. 5477, U.S.N.M. 



Mesonotum somewhat polished but roughened, slightly rugose and granulosa, 

 not pruinose. Head brown, eyes widely separated, antennae brown, the basal 

 joint and mouth parts yellow; body black, halteres dark brown, legs yellow, 

 apices of hind femora and of their tibiae black, front femora noticeably thick- 

 ened, each bearing about 5 short spines on the under side, middle and hind 

 femora considerably thickened near the apex, each bearing two or three 

 spines on the under side, last tarsal joint fringed along each side below with 

 stout and rather long bristles, claws long, simple; wings hyaline, first vein 



