The CANADIAN ENTOMOLOGIST. 15 



Paratypes. — Havana, April 30 and May 1, 3 specimens; 

 Golconda, III., April 18, 1914, on bank of Ohio River, and St. 

 Joseph, 111. May 3, 1914, 3 specimens (Hart & Malloch). 



Male. — Similar to the female in coloration, bristling and ven- 

 ation. The hypopygium is normal in size and yellowish in colour. 



Allotype. — Same data as type. 



This species, through its possession of a pale yellow face and 

 frons and the discontinuance of the costal vein, will run down to 

 section 13 in my table of species in this genus,* but may readily 

 be separated from the two species included there as follows: From 

 hrevicostalis Malloch by the lateral margins of the disc of mesd- 

 notum being concolorous with the disc, and from davisi Walton 

 by the yellow antennae. Parvicella Coquillett is a much more 

 slender species than aristata, and is essentially different in many 

 respects. 



The food plant of aristata is unknown, the specimens being 

 the result of general collecting in different situations. 



Agromyza pruinosa Coquillett. 



It may be of interest to record the occurrence of this species 

 at St. Joseph, 111., on May 3, 1914. The writer took three females 

 on the bank of Salt Fork, by sweeping the branches of various 

 trees. River birch {Betiila nigra) is recorded only for the southern 

 part of the State, and no birch trees occur at the place where the 

 inse:t was taken, so that it must feed upon some other tree here. 

 Further investigation may be made to discover its habits in this 

 locality. 



Agromyza infumata, new species. 



Male. — Black. Head black, frons opaque on centre stripe, 

 orbits and ocellar region shining; apex of proboscis pale brown. 

 Mesonotum shining, but with distinct brownish pollinosity; ver- 

 tical pleural suture and below wing base brown; squamae gray, 

 margin and fringes brown. Abdomen shining black, without 

 pollinosity. Legs black. Wings slightly grayish, veins dark brown. 

 Halteres yellow, knobs white. 



*Am. Ent. Soc. Amen, Vol. 6, 1913, p. 271. 



