1913] Agromyza and Cerodontha. 277 



2a. Agromyza variata, new species. 

 Plate XXIX, Fig. 14. 



Female: Frons lemon yellow, slightly over one-third the width of 

 head; ocellar region black; orbits darkened on outer edge on upper half; 

 five orbital bristles present ; the anterior three closely placed and decreas- 

 ing much in size to front one, which is very weak; an irregular row of 

 weak hairs on orbits, laterally, beyond the bristles; antennae of mod- 

 erate size; yellow, third joint infuscated on apical half; arista brown, 

 base swollen, pubescence very short ; length of arista equal to a little more 

 than twice the length of antenna; face and cheeks pale yellow; height of 

 cheek posteriorly distinctly higher than anteriorly, at highest point less 

 than one-fourth the height of eye, marginal bristles of moderate length, 

 the vibrissa differentiated; proboscis yellow; palpi yellow, blackened 

 and shghtly dilated apically, occiput not visible on upper half. Meso- 

 notum glossy black on disk, lateral margins and a large patch on center 

 of posterior margin, which is rounded in front, pale lemon yellow; four 

 pairs of dorso-centrals present, the disk except on the yellow parts 

 covered with short black setulse; pleurae shining black, yellow along 

 sutures and below wing base; squamee yellow, darkened on margins, 

 fringe brown; scutellum pale yellow on disk, a black spot on each side 

 at base. Abdomen glossy black, posterior margins of segments narrowly 

 yellow. Legs yellow, bases of coxae, tibi« except bases, and tarsi 

 black; no bristles on posterior surface of mid tibia. Wings clear; inner 

 cross vein at below end of first vein and at middle of discal cell; last 

 section of fifth vein twice as long as penultimate section. 



Halteres yellow. 



Length, 1.5 mm. 



Type: In collection C. W. Johnson. 

 Locality: Calais.. Maine. 

 Food-plant unknown. 



3. Agromyza discalis, new species. 



Plate XXX, Fig. 21. 



Female: Frons yellow, opaque, almost parallel-sided, except at 

 near posterior margin, where the sides very abruptly diverge, in breadth 

 it occupies less than one-third the width of head; orbits very narrow; 

 four orbital bristles present ; nearer to eye margin on orbit is an irregular 

 row of very short hairs ; ocellar region and back of head black ; antennae 

 clear yellow, of less than average size; second joint with short dorsal 

 bristle; third joint small, not longer than broad, rounded; arista black, 

 yellowish for a short space at just beyond the rather distinct basal 

 swelling; pubescence indistinguishable; length of arista equal to from 

 its base to second uppermost orbital bristle, face yellow, perpendicular; 

 cheeks yellow, twice as high at posterior margin as at anterior, and at 

 highest part rather more than one-third as high as eye; marginal 

 bristles weak; vibrissa moderately strong; proboscis brownish yellow;. 



