1913] Agromyza and Cerodontha. 323 



49. Agromyza burgessi, new species. 

 Plate XXXI, Fig. 34. 



Female: Frons black; center stripe brown-black, opaque, orbits 

 glossy black ; breadth of frons distinctly, but not greatly, over one- 

 third the width of head; breadth of each orbit about equal to one- 

 fourth the width of center stripe; generally six strong orbital bristles 

 present, in one specinem five only; the bristles situated on nearer to 

 inner than outer margin of orbits; the space between eye margin and 

 bristles thickly covered with short hairs; ocellar triangle poorly defined 

 anteriorly, the gloss on surface not continuing to its apex; lunule whitish 

 pollinose; frons projecting slightly anteriorly, giving the head a some- 

 what buccate appearance; eye orbit continued to almost hind angle 

 of eye; glossy black; antennae small, brown; third joint not longer than 

 broad, regularly rounded at apex; arista swollen at base, bare, as long 

 as from its base to between second and third uppermost orbital bristles ; 

 cheek brown, distinctly higher at posterior than at anterior margin, 

 and at highest point distinctly over one-third the height of eye; marginal 

 bristles of moderate strength, not numerous; vibrissa well differentiated; 

 proboscis brown; palpi black, slightly spattilate, weakly bristled at 

 apex; occiput distinctly visible on upper half. Mesonotum black, 

 glossy, without any distinct bluish fringe; bristles as in ccerulea; pleurae 

 brown-black, the sutures and below wing base pale brown; squamae 

 grayish, margin black-brown, the fringe brown; scutellimi black, 

 glossy, bristles subequal. Abdomen glossy black or brown-black, 

 with, in some lights, a bronzy luster; second segment not so distinctly 

 shortened as in ccsndea; in other respects similar to that species. Legs 

 similar to previous species, but the bristle on fore tibia is weaker. 

 Wings in most respects similar to ccendea, but the third and fourth veins 

 are distinctly divergent on their outer sections. Halteres brown. 



Length 3.5-4 mm. 



Type: Cat. No. 15585, U. S. N. M. 



Locality: Beverly, Massachusetts, June 2, 1876 (Bur- 

 gess). 



Specimens of this species are in collection from Tower 

 City, North Dakota, (G. I. Reeves), Webster's No. 3122, 

 2 females; and Colorado, No. 1563, no collector's name, 1 

 female. I have named this species in honor of the late Edward 

 Burgess, who collected the type specimen 37 years ago, I 

 haive seen one specimen in C. W. Johnson's collection from 

 Lancaster, New York, which has the^ bristles on fore tibia 

 indistinguishable. 



Food-plant unknown. 



