202 THE CANADIAN ENTOMOLOGIST. 



breast bone, heart-shaped anteriorly, and ending in an elongate point 

 posteriorly. The dry galls are empty. I found them common on Goat 

 Island (Niagara Falls), on the hills near West Point, N. Y., in Cambridge, 

 Mass., etc., in August and September, on the young shrubs of the linden. 



Cccidomyia (urticse) umicola, n. sp. Galls on the upper side of the 

 leaves of Urtica gracilis, either on the midrib, or, more often, on the 

 lateral veins. Urn-shaped (I mean the shape produced by cutting off the 

 smaller end of a slender pear) up to 3 m. m. high, subsessile (that is, 

 connected by a very small surface with the leaf), pale green, semi- 

 transparent, succulent gall, bearing a short style or nipple at the upper, 

 truncate end. Inside, the larva of a Cccidomyia. Lake George, July, 

 1863 ; Trenton Falls, July, 1874 ; not uncommon, but not in large 

 numbers. Each leaf bears one, sometimes two galls, seldom more. 



The gall produced by a Cccidomyia on the European nettle, and 

 described by Ferris, Ann. Soc. Ent. France, vol. IX, p. 401, is different 

 from the present gall. 



Asphondylia (asteris) recondita, n. sp. Deformed terminal buds on 

 the principal and the lateral branches of Aster patens. These galls 

 consist merely in an arrest of growth and consequent accumulation of 

 leaves, forming a bud-like body up to 10 or 15 m. m. in length. Inside I 

 found pupae which their structure proves to be those of Asphondylia. 

 The horn-like, sharp projections on the head are contiguous here, precisely 

 as in Asphondylia sarothamni, figured by Winnertz (Linn. Entomol. vol. 

 V[II, Tab. I, f. 6). I found these galls on Lloyds Neck, Long Island, in 

 September, but did not succeed in rearing the fly. 



ON NORTH AMERICAN SPECIES OF PLUSIA. 



BY A. R. GROTE, A. M., BUFFALO, N. Y. 



Plusia mono don, n. s. 



Allied to precationis and gamma. It differs by the distinct yellow 

 shaded geminate t. p. line having but a single acute tooth at vein 2 ; the 

 line running more outwardly at this point, and being otherwise even 

 throughout. Also by the shape of the metallic spot ; this is open, silver 



