Malloch — Fovr New North American Diptera. 47 



process and tlie well developed pnlvilli. I hesitate accepting this sub- 

 genus as a valid one in the absence of females and information as to 

 whether that sex has coordinated characters which permit of their asso- 

 ciation with the males in a subgeneric treatment of the group. 



Sapromyza littoralis n. sp. 



Male. — Yellow, shining. Frons opaque, entire head yellow, the arista 

 brown. Mesonotum with very slight grayish prninescence. Legs en- 

 tirely yellow. Halteres yellow. Hairs and bristles on body black. 



Head buccate in profile, the frons distinctly and obtusely produced 

 anteriorly, face slightly receding towards mouth; width of frons one-half 

 that of head; orbital bristles becoming shorter anteriorly, the anterior 

 one slightly beyond middle of orbit; cheek over half as high as eye, 

 almost bare, without distinct hair at anterior angle; eye small, slightly 

 higher than long. Mesonotum with four pairs of strong dorso-centrals, 

 the anterior pair distinctly in front of suture; acrostichals in two rows, 

 reaching to a point in front of anterior dorso-centrals. Abdomen short 

 and stout, its length not equal to that of thorax, the dorsum generally 

 flattened ; apices of all segments with distinct black bristles ; hypopygium 

 stout, not laterally compressed as in harti ; last ventral segment with the 

 lateral extremities drawn out into short, sharp points. Legs stout; hind 

 femora with a group of very short black setulae on basal third of ventral 

 surface; 1-2 bristles at near apex on ventral surface; hind tibiae without 

 noticeable hairs, except the usual preapical bristle. Wings slightly 

 yellowish ; veins pale brown ; venation as harti. 



Female. — Agrees with the male except that the abdomen is slightly 

 conical in shape, the last segment not noticeably constricted and the 

 small setulae are absent from the hind femora. 



Length: 3.5-4.5 mm. 



Type locality.— South Haven, Mich., July 14, 1914 (C. A. Hart). 

 Taken by sweeping on the lake shore. 



The male is separable from harti Malloch, which it most closely resem- 

 bles, by the shape of the abdomen, the presence of the small setulae at 

 base of the hind femora and smaller number of preapical hind femoral 

 bristles. The female is separable from that of harti by the shape of the 

 abdomen, which is conical, while in harti the last segment is suddenly 

 contracted. From bispina Loew and other species which have the wings 

 and body without dark marks, this species and harti may be separated 

 by the buccate head and comparatively small eyes. 



Meoneura nigrifrons n. sp. 



Male. — Glossy black. Head and its members entirely black, the frons 

 glossy. Mesonotum without pruinescence ; scutellum shining, but less 

 glossy than mesonotum. Abdomen glossy black, slightly brownish and 

 less glossy at base. Legs black. Wings whitish, first, second and third 

 veins and the costal vein to apex of the latter dark brown, fourth vein 

 colorless, fifth nearly so. Halteres black. 



