1895.] NATURAL SCIENCES OP PHILADELPHIA. 309 



pale yellowish, small cross vein clouded with brown ; first vein forked 

 before its apex, the fifth forking slightly beyond the cross vein. 

 Length 3 mm. 



Tick Island, Florida, (May 12, 1892 ; C. W. Johnson). A single 

 specimen in Mr. Johnson's collection. 



Masiphya aurigera u. sp. c? . 



Black, the second antenna! joint, base of the third, the palpi, and 

 fourth abdominal segment except its base, yellow. Front at vertex 

 hardly two-fifths as wide as either eye, vittanext the antennse nearly 

 as wide as either side of the front, the latter and the face golden 

 pollinose; frontal bristles descending to tip of second antennal joint, 

 four in each row curving backward; antenna? nearly two-thirds as 

 long as the face, the third joint slightly over twice as long as the 

 second; arista thickened on the basal fourth; vibrissa? at a point 

 twice the length of the second antennal joint above the oral margin, 

 ridges bristly on the lower fourth; proboscis robust, the portion 

 between the basal articulation and the large labella scarcely longer 

 than the latter. Thorax gray pollinose, marked with four black 

 vitta?; four postsutural and three mesopleural macrocha?ta?; scutellum 

 bearing six pairs of long marginal macrocha?ta?. Abdomen gray 

 pollinose, with brownish reflecting spots, genitalia only slightly pro- 

 truding; first and second segment bearing a marginal pair of macro- 

 chsetse, third with a marginal row, the fourth with scattered macro- 

 cha?ta? on the apical two-thirds. Hind tibia? not ciliate, destitute of 

 long hairs on the inner side, pulvilli as long as the last tarsal joint. 

 Wings hyaline, slightly tinged with gray basally, third vein bearing 

 four bristles at the base, the others bare; bend of fourth vein 

 destitute of an appendage. Length 11 mm. Florida. Mrs. A. T. 

 Slosson. A single specimen. 



TACHININJE. 

 PSEUDOCHiETA n. gen. 



Anterior pair of ocellar bristles wanting, two pairs of backwardly 

 curving orbital bristles in both sexes and an additional pair of 

 forwardly directed ones in the female; the upper pair of frontal 

 bristles is on a line with the backwardly curving orbitals and con- 

 siderably removed from the other frontals which are much smaller 

 and decussate, extending from the lowest ocellus to the arista; 

 antenna? as long as the face, the third joint in the male five 



