NO. 1225. SOME NE W DIPTERA — CO Q UJLLETT. 601 



Three female spec'iinen.s. Riverton, New Jeraey (July 3, C. W. Johnson), and 

 District of Columljia (D. W. Cociuillett, in June). 



Ti/jM.— Cat No. 5450, U.S.N.M. 



Under side of each femur liearing a single spinous bristle. Head hlack, eyes 

 quite widely separated, antennte brown, the l)asal half yellow at sutures of the 

 joints, mouth parts dark brown; thorax dark brown, light gray pruinose, a 

 dark brown median vitta on anterior half and a widely separated pair on the 

 posterior half, scutellum yellow, knobs of halteres brownish yellow; al)domen 

 dai'k brown, first two segments, except a pair of spots on the first and the pos- 

 terior portion of the second, also the narrow hind margin of each segment, yel- 

 low; legs light yellow, the suture.-^ l^rownish, coxee dark brown; tarsi and 



wings as in the preceding species; length, 2 mm barherl, new species. 



A female specimen, collected May 11, l)y Mr. H. S. Barber, ior whom the si^ecies 

 is named. Chesapeake Beach, Maryland. 



Type.— Cat No. 5460, U.S.N.M. 



7. Wings hairy on at least the apical portion, tarsal claws simple, of an equal 



length, femora and tarsi not spinose 8 



Wings bare, first tarsal joint at least one-half longer than the second 22 



8. First tarsal joint at least one-half longer than the second 11 



First joint shorter, or at most only slightly longer than the second, the latter at 



most one-third longer than the first, last two joints of nearly an equal length, 

 empodia distinct, wings thickly covered with brown hairs, third vein imited 

 with the first nearly to apex of the latter, its apical portion separated from the 

 costa, ending near middle of length of wing 9 



9. Mesonotum opaque 10 



Mesonotum polished. Head and its members brownish black, eyes contiguous, 



pubescence on apical i^ortion of antennse and at apex of palpi white; body 

 black, its hairs brown, a yellowish spot on pleura in front of each wing, knobs 

 of halteres whitish, legs brown, bases of tarsi yellow, middle and hind legs 

 bearing many long hairs on under side of the femora, outer side of the tibife 

 and upper side of the tarsi; wings hyaline, fourth vein forking beyond the 



small cross vein; length, 2 to 2.5 mm specularis, new species. 



Four male specimens. Philadelphia (June 28) and Natrona, Pennsylvania (July 



30, C.W.Johnson); Washmgton, District of Columbia (August 11, F. C. Pratt), and 



Colorado. 



%>e.— Cat. No. 5461, U.S.N.M. 



10. Tibife bearing several lanceolate scales on the outer side. Head dark yellow, 

 eyes contiguous, antenn;e basally yellow, tiie remainder and mouth parts brown; 

 thorax and scutellum dark yellow, abdomen dark brown, body thinly covered 

 with short yellow hairs; knobs of halteres whitish; legs light yellow, destitute 

 of long hairs; wings hyaline, short, broad, very blunt at apex; length, nearly 



1 mm fimhriatus, new species. 



A female specimen, collected August 11, by Mr. H. S. Barber. Washington, Dis- 

 trict of Columbia. 



Type.— Cat No. 5462, U.S.N.M. 



Tibipe destitute of scales. Head and l)ody dark brown, a humeral spot extending 

 upon the pleura almost to front cox;e, a spot beneath each wing, hind margins 

 of abilominal segments 2 to 6, and ventral portion of first 4 or 5, light yellow; 

 eyes contiguous, antennse ])rownish yellow, the hairs in female largely whitish, 

 in male dark brown, their apices whitish, mouth parts brownish yellow, Ijody 



