No. 64] DIPTERA OF COXXECTICUT : TAXOXOMT 313 



dark brown. Head black, grayish silvery behind. Wings yellowish; cell 1st M- 

 closed. Abdomen yellow, the tergites a trifle darker. $ . L. 3.5 mm. ; w. 5.5 mm. 

 Hazleton, Pa., Sept. 24. 



By key runs to couplet 11; apparently a distinct species of the brcvivena com- 

 plex, distinguished by the yellow body coloration. 



L. {Dicranomyia) brunnea (Doane). (Journ. N. Y. Ent. Soc, 8:184; 190U). 



General coloration reddish brown, the praescutum with a capillary paler me- 

 dian line. Antennae brown throughout. Knobs of halteres infuscated. Legs tawny, 

 the tips of femora and tibiae darker. Wings slightly tinged with brown ; Sci ending 

 opposite origin of Rs ; Sci long. ?. L. 8 mm.; w. 8 mm. Nantucket Is., Mass. 



By key runs to couplet 25 ; possibly a large distans. 



L. {Dicranomyia) diversoides (Dietz). (Trans. Amer. Ent. Soc, 47:240: 1921, as 

 Dicranomyia) . 



Thorax entirely yellow; notum subnitidous ; pleura with a slight whitish bloom. 

 Rostrum dark brown. Antennae with outer half of scape and most of pedicel brown, 

 the flagellum more yellowish. Knobs of halteres infu.scated. Wings with a faint 

 yellowish tinge; stigma scarcely evident; Sci ending opposite origin of Rs, very long, 

 approximately equal to Rs, the latter distinctly longer than the basal section of i?4+.-, ; 

 cell 1st M2 closed. $ . L. 4.5 mm. ; w. 5.3 mm. Hazleton, Pa. ; Aug. 4. 



By key runs to couplet 11 ; apparently closest to divisa but rostrum dark brown. 



L. (Z;im7;;o;nv/a) isabellina (Doane). (Journ. N. Y. Ent. Soc. 8:183-184; 1900, as 

 Dicranomyia). . 



Thorax ochraceous. Rostrum yellowish; remainder of head yellowish brown. 

 Antennae yellowish, slightly infuscated. Halteres pale, the knobs infuscated. Wings 

 hyaline; stigma faintly indicated; Sci ending a distance before origin of Rs about 

 equal to one-half the length of stigma ; Sci equal to Rs, the latter a trifle longer than 

 basal section of R4+0: cell 1st M-i closed. Abdomen brownish yellow, narrowly dark- 

 er brown laterally. ? . L. 4 mm. ; w. 5.5 mm. Hazleton, Pa., late July, Sept., Oct. 



By key runs to couplet 11. The infuscated knobs of halteres agree with divisa 

 but not with ptidica. 



L. (Dicranomyia) moniliformis (Doane). (Doane, Ibid.. 8:184; 1900. as Dicra- 

 nomyia). 



The holotype was from Colorado and is almost certainly distinct from the para- 

 type, taken on Nantucket Is., Mass. Rogers considers the species as being a synonym 

 of stulta; I regard the paratype (but not the type) as probably being identical with 

 gibsoni. 



L. (Dicranomyia) pemisylvanica (Dietz). (Trans. Amer. Ent. Soc, 47:239-240; 

 1921, as Dicranomyia) . 



General coloration reddish yellow; praescutum and pronotum with a well-de- 

 fined reddish brown median stripe; lateral praescutal stripes less evident, crossing 

 suture onto scutal lobes; pleura pale. Rostrum yellow. Antennae dark brown. 

 Halteres short, knobs dark brown. Legs pale. Wings rather narrow, hyaline, stigma 

 pale; Sc, ending just before origin of Rs: Sc, equal in length to stigma; Rs approxi. 

 mately twice the basal section of i?4+.-,; cell 1st M- closed. Abdominal tergites pale 

 brown, the caudal margins indistinctly darkened at posterior ends; sternites pale; 

 hypopygium brownish yellow. S . L. 5 mm. ; w. 5.5 mm. Hazleton. Pa. ; July 20. 



By key runs to couplet 25; descjription agrees fairly well with sphafinicola,<ixcept 

 for the short halteres and yellow rostrum. Dietz compares this with brevwenula 

 (as flavcsccns) but the venational details preclude a close relationship. 



Besides the above, the following Western American species have been recorded 

 from Pennsvlvania bv Dietz (Trans. Amer. Ent. Soc, 47:240-241; 1921): gracilis 

 (Doane), tvpe from Idaho; helva (Doane). from Colorado; ochracca (Doane), from 

 Idaho. These records from the East must be held to be in error. 



