314 Annals Entomological Society of America [Vol. VI,. 



39. Agromyza salicis, new species. 

 Plate XXIX, Fig. 15. 



Male: Frons black, center stripe opaque brown-black, orbits 

 and ocellar region shining; width of frons about one-half the head 

 width; each orbit about one-half as broad as center stripe; five distinct 

 orbital bristles present, the hairs between these and the eye margin 

 rather conspicuous and numerous; ar|,tennse black; rather small; third 

 joint rounded, distinctly shorter than broad; arista brown; swollen 

 on basal fourth; pubescence very short, but distinct; length of arista 

 not as long as from its base to second uppermost orbital bristle; face 

 black, subopaque, retreating towards mouth margin; cheek brown- 

 black, distinctly higher at posterior than at anterior "margin, at highest 

 point more than one-half as high as eye; marginal bristles of moderate 

 strength; vibrissa hardly differentiated; proboscis yellow; palpi black, 

 of moderate size. Mesonotum shining black; three distinct pairs 

 of dorso-centrals present; the anterior pair distinctly weaker than the 

 other two pairs, and close to suture; the pair of bristles between the 

 posterior pair of dorso-centrals weakly differentiated; pleura shining 

 black, brownish along sutures and below wing base; squams grayish, 

 fringe dark brown; scutellum and postnotum concolorous with disk 

 of mesonotum, the former with the bristles subequal. Legs black; 

 mid tibia without distinct posterior bristles. Abdomen black-brown, 

 shining, covered with short setulas; hypopygium glossy black, small. 

 Wings rather narrow; second costal division 2)^ times as long as first; 

 subcostal vein distinct; fused with first at its apex; inner cross vein at 

 about apex of junction of first vein with costa; outer cross vein at 

 distinctly, but not greatly, before wing middle, and at slightly more 

 than its own length from inner cross vein; last section of fifth vein 

 subequal with penultimate section; sixth vein indistinct. Halteres 

 black. 



Length 2 mm. 



Type: Cat. No. 15577, U. S. N. M. 



Locality: Reading, Massachusetts, May 16, 1908. New- 

 York State Collection, from Willow, (E. P. Felt). One male. 



40. Agromyza winnemanae, new species. 



Female: Deep black, glossy; abdomen with an indication of 

 metallic bluish sheen. Frons deep black, center stripe opaque; orbits 

 glossy; width of frons slightly more than one-third the head width;, 

 each orbit a little less than one-fourth the width of center stripe; four 

 orbital bristles present; an irregular row of weak hairs between eye 

 and orbital bristles; antennae of moderate size; second joint with dis- 

 tinct dorsal bristle; third joint barely longer than broad, rounded at 

 apex; arista swollen at base, tapering, bare, in length equal to from its 

 base to second uppermost orbital bristle; face brownish black, opaque; 

 almost perpendicular in profile, with slight, rounded keel; cheek very 

 short, almost linear, not over one-eighth as high as eye, marginal 



