386 Annals of the Carnegie Museum. 



in his Catalogue of North American Diptera, 1905, p. 630 legarding 

 the occurrence of the genus Leiicophenga in North America was based 

 on his supposed n. sp. and not on his suspicion that it was identical 

 with Walker's species. When Mr. Johnson rediscovered and recorded 

 Walker's species from New Jersey and Florida in 1895 and 1900 under 

 the genus Drosophila the writer became doubtful as to his above men- 

 tioned " marginal note," but when Mr. Johnson in 1913 placed Walker's 

 species in the genus Leiicophenga, then the writer became doubtful 

 about his supposed n. sp. and sent a specimen to Mr. Johnson asking 

 whether it agreed with his conception of Walker's species and the 

 specimen was returned with an affirmative answer. The writer is 

 now absolutely as fully convinced as the eminent dipterologist, Mr. 

 C. W. Johnson himself, that it is the true Drosophila quadrimaculata 

 Walker and thus a Leiicophenga, and to clear any doubts the writer 

 has deemed it advisable to redescribe it, as has been done above. 



The species has much resemblance to frontalis Williston and orna- 

 tiventris, sp. nov., but differs from them in having spotted wings and 

 a different maculation of the abdomen. 



9. Leucophenga bistriata sp. nov. 



Diagnosis: Head and antennae yellow; upper occiput black; front, 

 face, and third antennal joint with grayish white bloom; palpi large, 

 leaf-like, black. Mesonotum dark brown-red. Pleura yellow with 

 two brown spots. Scutellum blackish brown on basal two-thirds, 

 yellowish white on apical third. Legs yellow. Halteres yellowish 

 white. Abdomen black with yellowish base, but its extreme apex and 

 a transverse, basal band on third segment whitish. Wings hyaline 

 with two brown, longitudinal, diverging stripes from base, one costal, 

 the other median; second vein straight apically; the distance between 

 anterior and posterior cross-veins distinctly shorter than first section 

 of third vein. Length 3 mm. (or a little less). 



Description: Head with front and antennae yellow, the former and third antennal 

 joint in certain lights revealing as also the face a grayish white pollen, leaving only 

 the basal joints of the antennae and the immediate vicinity above them yellow. 

 Front about one-fourth the width of head, of equal width, or very little wider at 

 lower ocellus than at base. The upper strongly concave occiput blackish, with a 

 yellow spot at vertex. The third antennal joint one and one-half as long as wide; 

 the black arista with seven rays above and four below (observed in left antenna 

 only). Face not carinate. Palpi prominent, broad, leaf-like, black, with a minute 

 setula at apex. Cheeks extremely narrow. 



