290 Annals Entomological Society of America [Vol. VI, 



Type: Cat. No. 6649, U. S. N. M. 



Type Locality: Mt. Washington, New Hampshire, (Mrs. 

 A. T. Slosson). 



Besides the type there are specimens in collection from the 

 following locations: Two specimens, Santa Fe, New Mexico, 

 (May), (H. S. Barber), one specimen St. Louis, Missouri, 

 April 30, 1904 (W. V. Warner) ; and one specimen, Kaslo, 

 British Columbia, July 17, 1903, (R. P. Currie). 



Food-plant unknown. 



The type specimen has the yellow thoracic markings on 

 disk and scutellum rather indistinct, but in other respects 

 is similar. It is a true Agromyza and has very little in common 

 with Odinia omata Zetterstedt, which is represented in the 

 U. S. N. M. collection by one specimen from Dauphin county, 

 Pennsylvania. 



16. Agromyza citreifrons, new species. 



Male and Female: Frons opaque, lemon yellow, distinctly longer 

 than broad, one-half as wide as head, parallel-sided; orbits more or less 

 blackened or broomed, especially posteriorly; three pairs of long, fine, 

 orbital bristles anterior to front ocellus, the upper distinctly in front of 

 anterior ocellus, anterior to lower bristle there is a weak hair, othermse 

 the orbits are bare; ocellar region and back of head black; antennae of 

 moderate size, clear lemon yellow; second joint bare except for the 

 weak dorsal bristle; third joint rounded, about three times as long as 

 second; arista concolorous with antennse on the swollen base, brown on 

 remainder, almost bare, barely as long as from its base to anterior 

 ocellus; face yellow, slightly retreating in profile; cheeks concolorous, 

 higher posteriorly than anteriorly, at highest part over one-third the 

 height of eye; eye slightly longer than high; marginal mouth bristles 

 not numerous (4-5) but rather strong, the vibrissa hardly differentiated; 

 proboscis and palpi clear lemon yellow. Mesonotum opaque, brown- 

 ,black; lateral margins and humeri brownish yellow; four pairs of dorso- 

 central bristles, arranged in parallel rows, anteriorly reduced in length; 

 setulse between dorso-centrals irregularly arranged in 3-4 rows, extend- 

 ing to posterior margin; pleurae lemon yellow, a large brown or blackish 

 triangular spot between the fore and mid coxae, another smaller one 

 over hind coxae and an indistinct longitudinal mark sometimes present 

 on mesopleurae on middle; squainae brownish, fringe brown; scutellum 

 brown, with four marginal bristles; postnotum black. Abdomen 

 shining brown, or blackish, lateral margins yellow in female, ovipositor 

 of female glossy brown-black, as long as preceding segment of abdomen; 

 hypopygivmi of male brownish, organs knob-like, of moderate size; all 

 segments with numerous black hairs, which are noticeably longer on 

 lateral margins and apices of last two segments. Legs yellow, tarsi 

 browned; mid tibia without posterior bristles. Wings clear or slightly 



