124 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



rowest point nearly as wide as either eye, frontal orbits unusually 

 wide, wider than frontal vitta at base, the latter strongly contracted 

 above, at its narrowest point about as wide as lowest ocellus, head 

 considerably' inflated, three pairs of frontal bristles, proboscis rather 

 slender, rigid, with small labella; antenna three-fourths as long as the 

 face, the second joint three-fourths as long as the third, arista almost 

 bare, thickened on the basal fourth; ])ody densely light l^luish gray 

 pruinose, unmarked; three pairs of postsutural dorsocentral ])ristles. 

 sternopleurals one and two, scutellum bearing a sulilmsal and a subapical 

 pair; abdomen depressed, narrow, hypopygium rather small, with a 

 tissure slightly to left of median line, no ventral lobes; middle femora 

 bristly on basal half of under side, the hind ones on nearly their entire 

 length; front tibia? })earing a ))ristle near two-thirds length of outer 

 side and another below middle of inner-posterior side; middle tibiae 

 with one Ijelow middle of outer-anterior, one on outer-posterior, and 

 two on median third of inner-posterior side; hind tibia? ciliate, with 

 rather short bristles on nearly the entire length of the inner-anterior 

 and inner-posterior sides, and with about live larger bristles on the 

 outer-anterior and outer-posterior sides; front pul villi as long as the 

 last tarsal joint; wings whitish hyaline, costa not distinct!}^ spinose, 

 costal spine about as long as the small crossvein. 



Female. — Differs from the male as follows: Front twice as wide as 

 either eye, frontal vitta only slightly contracted above, two pairs of 

 orbital bristles and a cruciate pair of preocellars, second antennal 

 joint about half as long as the third, abdomen broad at base, tapering 

 to the tip; hind tibia? bearing onlj^ two bristles on the anterior-inner 

 side, none on the posterior-inner, front pulvilli al)out half as long as 

 the last tarsal joint, costa with rather long spines. 



Length, -1.5 mm. A specimen of each sex received from ]\Ir. C. W. 

 Johnson. 



Ilahltat. — Manumuskin. New Jersey. 



Ti/pe.^Cdt. No. 6197, IT.S.N.M. 



Family SCATOPHAGID.E. 



PSELAPHEPHILA SIMILIS, new species. 



Head yellow, the occiput and three triangular spots on vertex black, 

 gray pruinose. face, except its extreme sides, white pruinose, frontal 

 orbits whitish pruinose. changing above to gra}" antenna? black, first 

 two joints and base of third yellow, palpi light yellow, proboscis l)laek; 

 body ))lack, thorax densely, the abdomen thinly bluish gray pruinose. 

 the abdomen somewhat polished; femora black, their broad apices and 

 the tibia? vellow, tarsi darker yellow; bristles of legs and body normal; 

 wings grayish hyaline, the veins brown; halteres yellow; length. 1mm. 

 One male and seven females collected April 30, 1870; May 8, 1809, 



