1913] Agromyza and Cerodontha. 285 



A single specimen of this species stood in the U. S. National 

 Museum collection as Napomyza lateralis Fallen. Localit}": 

 Missouri, reared from R, ahortivus. 



Food-plant: Ranunculus abortivus. 



11. Agromyza abbreviata, new species. 

 Plate XXXI, Fig. 32. 



Male: Frons black; center stripe opaque, brownish in center; 

 orbits glossy at base of bristles; five orbital bristles present, the bristles 

 situated on near to inner margin of orbits ; beyond them is an irregular 

 row of hairs; ocellar region and ocellar triangle glossy, the latter rather 

 distinctly defined for this group ; antennas as in kincaidi, but pubescence 

 on arista much shorter; face subshining black, slightly concave in pro- 

 file, the keel slight; cheeks opaque brown, rather long, distinctly higher 

 at posterior margin than at anterior, at highest part a little more than 

 one-fourth as high as eye; marginal bristles weak, in a double row, and 

 rather niimerous; the vibrissa weakly differentiated; eye comparatively 

 larger than in kincaidi the occiput less projecting; proboscis yellow; 

 palpi black, normal. Mesonotimi shining black; the surface hairs 

 numerous, and rather long; three distinct pairs of dorso-centrals pres- 

 ent, the anterior pair reduced, and with a pair of large setulas anterior 

 to them ; the pair of bristles between the posterior pair of dorso-centrals 

 distinct, about half as large as the dorso-central pair; pleurae glossy 

 black, yellowish below wing base; squamee yellowish white, fringe 

 white; scutellum and postnotum glossy black. Abdomen concolorous 

 with thorax; all segments with numerous surface hairs; hypopygiimi of 

 nonnal size, glossy black. Legs piceous; knees yellowish, femora 

 black; mid tibia with posterior bristles distinct. Wings clearer and 

 comparatively broader than in kincaidi. Halteres yellow, knob white. 



Length, 3.5 mm. 



Type: Cat. No. 15564, U. S. N. M. 



Locality: Las Vegas, Hot Springs, New Mexico, (H. S. 

 Barber). One male. 



12. Agromyza kincaidi, new species. 

 Plate XXIX, Fig. 12. 

 Female: Entirely black, except the halteres and squamae, which 

 are white, distinctly shining. Frons shining but not glossy, center 

 stripe opaque, breadth of frons slightly more than one-half of the head 

 width, slightly divergent posteriorly, orbital bristles on near inner 

 margin of orbits, the upper one distinctly lower than anterior ocellus, 

 the others close together and decreasing in size as they advance towards 

 antennas, besides the strong bristles there are smaller hairs arranged in 

 a row nearer to eye margin on the entire length of orbit ; frons in profile 

 slightly projecting in front; face concave, with a slight central longi- 

 tudinal keel, the upper mouth margin slightly protruding; cheeks 

 brownish, posteriorly almost one-half as high as eye-height, anter- 

 iorly less than one-half as high as posterior height; mouth margin 



