580 PROCEEDINGS OF THE ACADEMY OF [Oct., 



injury done to the thorax by the pin; scutum gray medially, the 

 lobes yellow outwardly, black on the inner part of the lobe; scutellum 

 gray medially, black on the sides; postnotum blackish gray. Pleurae 

 gray. Halteres yellow, the knob darker. Legs, coxse and trochanters 

 dull yellow, femora yellowish brown, the tip broadly dark brown, 

 tibiae light brown, the tip narrowly dark brown, tarsal segments 

 1 and 2 light brown, the tips of the segments brown, segments 3 to 5 

 brown. Wings hyaline with abundant brown markings in all the 

 cells including a series of four large marks along the costa, the third 

 at the origin of Rs and the fourth at the stigma; venation (PI. 

 XXVII, fig. 22): Sc short encUng opposite the origin of Rs, basal 

 deflection of Cui before the fork of M. 



Abdomen with the basal tergites dull brownish yellow, dark brown 

 laterally, segments 6 to 8 dark brown, the hypopygium yellow; 

 sternites dull light yellow, the lateral margin of the sclerites brown, 

 segments 6 to 8 uniformly darker. 



Holotype, cf , Colorado, in the U. S. National Museum. 



This is the only North American species with the short subcosta 

 that has the wings so spotted; superficially this insect resembles 

 ■simulans Walker which has a long subcosta, Init in the details it is 

 quite a different fly. 



Dicranomyia reticulata Alexander. 



1912. Furcomyia reticulata Alexander; Canadian Entomologist, vol. 44, 

 pp. 3.34, 335, pi. 11, fig. p. 



One female from Biscayne Bay, Dade Co., Fla., taken by Mrs. 

 Slosson, constitutes the first record for the United States. 



Genus EHIPIDIA Meigen, 

 1818. Rhipidia Meigen; Syst. Beschr., vol. 1, p. 153. 

 Rhipidia (Rhipidia) bryanti Johnson. 



1909. Rhipidia bryanti Johnson; Proceedings of the Boston Society of 

 Natural History, vol. 34, pp. 123, 124, pi. 16, fig. 20. 



This showy Rhipidia has been bred from decaying wood under- 

 neath bark by Mr. R. C. Shannon at Washington, D. C. The male 

 has never been described, but has been found several times; the 

 antennae in this sex are bipectinate. The collections of Dr. Dietz, 

 Mr. VanDuzee and the National Museum indicate a wide range for 

 this species. Orono, Penobscot Co., Me., June 30, 1913 (Alexander). 

 East Aurora, Erie Co., N. Y., June 15, 1912 (VanDuzee). Plummers 

 Island, Md., September 4, 1904. Potomac Park, Washington, D. C, 

 May 11, 1913 (Shannon). Black Mts., Buncombe Co., N. Car., 

 June 16, 1912 (Beutenumller). Braidentown, Manatee Co., Fla., 



