280 ^ Afifials Entomological Society of America [Vol. VI ^ 

 5. Agromyza seutellata Fallen. 



Syn: Agromyza scvtellata Fallen Dipt. Suec. Agromyza. 1823. 7. 3. 

 Agromyza flaveola var. Fallen, 1. c. 6, 11. 

 Agromyza pictella Thomson, Fregat. Eugene. Resa, Dipt. 1851, 53, p. 609. 



I have compared examples of the European species with 

 those in collection representing pictella and am convinced 

 they are identical. I have some slight doubts as to its specific 

 distinctness, from the foregoing species, but consider it justi- 

 fiable to retain it as separate species until I know something 

 of the life history of seutellata, which has not been bred in t"his 

 country, *"• 



Male and female: Similar. in coloration to pusilla Meigen, 

 except that the femora are generally the most intensely black 

 portions of the legs and in no 'examples that I have seen is 

 there any appearance of their being inclined to yellow, especially 

 at base. In size this species is also larger and the wing neura- 

 tion is different. Otherwise, in bristling, etc., the species are 

 identical. 



The only American examples I have seen of seutellata are 

 five from mountains near Claremont, California (C. F. Baker) 

 and one from Williams, Arizona (H. S. Barber). 



6. Agromyza borealis new species. 

 Plate XXIX, Fig. 10, Plate XXX, Fig. 23. 

 Female: This species is very clo^e to longispinosa, but differs in 

 ^ being more robust, in having the frons reddish yellow, instead of pale 

 yellow; the antennas are reddish yellow; the arista is black, tapering 

 from base to near middle, bare, and distinctly shorter than from its base 

 to vertex; cheeks more than one-half the eye-height; marginal mouth 

 bristles numerous, vibrissa hardly differentiated. Mesonotum with 

 the marks dull gray black; the posterior lateral stripes narrow, linear, 

 distinctly separated from the inner lateral lobe; the central excision 

 carried forward at its angles but not sufficiently to separate the inner 

 lateral stripes from the central one on their whole length; four pairs of 

 dorso-central bristles present, the anterior two pairs about two-thirds 

 as large as the posterior pairs; the thorax is distinctly broader than in 

 longispinosa, being almost subquadrate, in longispinosa it is at least 

 one-third longer than broad; the small bristles between the dorso- 

 centrals are at least four-rowed in borealis. The pleuras and scutelluin 

 are bristled and colored as in longispinosa, the scutellum having two 

 distinct dark lateral basal spots. Abdomen yellow, basal three seg- 

 ments brownish, next two with a brownish spot on each side, sixth with 

 a central black spot; base of ovipositor glossy black, longer than sixth 

 segment, which is not elognated, bristles as in melampyga. Legs 

 yellow, tarsi slightly browned ; mid tibiee as in longispinosa, without the 

 posterior bristles. Wings grayish, veins yellowish, except third which 



