aldri(;h and Darlington. 91 



Wings sliglitly yellowish; small and large cross-veins and the apices of the 

 longitudinal veins distinctly bordered with hrown. 



Abdomen yellow, each segment with a blackish posterior border; hypopygiuni 

 of male large, brighter yellow. 



Legs light yellow. 



Eight male and seven female specimens. Aldrich : Knoxville, 

 Tennessee (Summers) ; Battle Creek, Michigan ; South Dakota, 

 July 2n(l. U. S. jS". M. : Oswego, New York; Milwaukee County, 

 Wisconsin, July 15th. Johnson : Philadelphia, Penna. ; Delaware 

 Water Gap, New Jersey; Montreal Island, Quebec; Auburndale, 

 Mass.; Burlington, Vermont, and Ft. Collins, Colorado; dates from 

 June 25th to August 14th. Melander: Wisconsin (Wheeler); 

 Angora, Penna., September 17th. 



The type locality was New York. 



Helomyza linibata Thomson (PI. IV, fig. 6). 



Length 5.3 mm. ; of wing 6.2 mm. 



General color pale yellow; legs a little lighter; wings strongly infuscated. 



Head yellow; eye large, round; vertex and upper part of the front saffron- 

 yellow, lower part of the front lighter yellow, densely pubescent; ocellar trian- 

 gle also pubescent; antennae pale yellow, third joint oval; arista of moderate 

 length, plumose; vibrissse of medium size, one on each side; cheeks narrow. 



Thorax entirely pale yellow, dorsum densely pubescent; mesopleura bare; 

 sternopleura with one strong bristle and numerous small black hairs; scutellunj 

 saffron-yellow, bare except the ordinary four bristles and an occasional small 

 hair near the margin. 



Wings with the marginal and usually the first submarginal cell distinctly 

 infuscated, also the ends of all the longitudinal veins; both cross-veins distinctly 

 bordered with brown. 



Abdomen of the female nearly black, that of the male not nearly so dark, but 

 with a black band on the posterior edge of each segment; hypopygiuni of the 

 male large, yellow. 



Legs straw-yellow ; hind knees blackish. 



Five male and nine female specimens. Aldrich : San Mateo, 

 Palo Alto and San Jose, California, January 26th to April 12th ; 

 Orcas Island, Guemes Island, and Keyport, Washington, July 7th 

 to August 7th. 



Type locality, California. 



Helomyza qiiinquepunclata Say. 



Ilelomyza latericia Loew, Centuries, ii, 89. 



Length 5.7-6 mm. ; of wing 6 mm. 



General color yellow, the large and small cross-veins and the apices of the 

 longitudinal veins distinctly bordered with brown; scutellum entirely pilose; 

 eyes large, ovate. 



Front saffron-yellow, broader at the vertex than at the antennae; face lighter 

 yellow, broadening from the antennae down ; antennse yellow, third joint large, 



TBANS. AM. ENT. SOC. XXXIV. MARCH. 1908. 



