THE CANADIAN ENTOMOLOGIST 79 



and palpi yellow; arista blackish. Scutellum except at base on 

 each side, and a large, subquadrate area on margin of mesonotum 

 between base of wing and humerus lemon-\ellow. Abdomen 

 entirely glossy black. Legs black, femora lemon-yellow. Wings 

 slightly brownish-tinged, especially on anterior half. Squamae 

 with margins and fringes blackish. Halteres cream-coloured. 



Head large, viewed in profile the face is distinctly retracted 

 below, orbits clearly differentiated from central stripe, each about 

 half as wide as latter; orbital bristles 5 in number, long and slender; 

 cheek twice as high posteriorly as anteriorly. Mesonotum with 4 

 pairs of dorso-centrals, the anterior 2 pairs very weak; discal 

 thoracic setulae numerous and rather long; scutellum with 4 long 

 marginal bristles. Abdomen short and broad; ovipositor conical 

 but not tubular. Legs stout; mid- tibia without posterior setulae. 

 Costa to apex of fourth vein, the latter ending in apex of wing; 

 inner cross- vein below apex of first and at middle of discal cell ; 

 last section of fifth vein about 1.5 as long as preceding section. 



Length 2 mm. 



Type locality, Alto Pass, 111., May 8, 1917 (J. R. Malloch). 



This species bears a strong resemblance to quadrisetosa Malloch, 

 but may be readily separated from that species by the colour of 

 the legs, palpi and antennge. 



Agromyza angulicornis, sp. n. 



Male.- — Yellow, slightly shining, conspicuously marked with 

 black. Head yellow; ocellar region, greater portion of occiput, 

 clypeus, and arista black or blackish. Dorsum of mesonotum 

 with a black mark similar to that on melampyga, the yellow pre- 

 scutellar mark subquadrate; disc slightly pruinose; the following 

 parts each with a black spot — humerus, propleura, mesopleura, 

 pteropleura, sternopleura, and hypopleura; scutellum with a black 

 spot on each side, postnotum black except on upper margin. 

 Abdomen infuscated on dorsum; hypopygium glossy black. Legs 

 yellow, tibiae and tarsi black. Wings slightly grayish, veins dark 

 brown. Halteres yellow\ 



Anterior ocellus situated further proximad of posterior pair 

 than it is in pusilla and allied species, the sides of the triangle 

 being unequal ; frons narrowed anteriorly, its anterior width being 

 distinctly less than half that of head; antennae larger than usual 



