THE CANADIAN ENTOMOLOGIST. 129 



hind angles of the eyes ; head with the postociilar area and the sides of 

 the vertex uniformly, finely punctured ; body black, with the abdominal 

 segments one to five and the basal half of the sixth, rufous ; the wings 

 hyaline, the veins and stigma black. Length, lo mm. 



Habitat : Ithaca, N. Y., and Chicopee, Mass. (J. O. Martin). 



Dole7'us plesiii%, n. sp.— 9 . Surface of the scutellar appendage 

 longitudinally striate ; head viewed from above with a deep transverse 

 furrow, rounded at bottom, extending from the lateral ocelli to beyond the 

 hind angles of the eyes ; head with a fine ridge extending from the edge 

 of the eye obliquely toward the occiput ; mesonotum with the impunctate 

 area on the sides of the lateral lobes not extending to the margin of the 

 median lobe ; the median lobe of the mesonotum more densely punctured 

 than the lateral lobes ; body blick, with the prothorax, tegulse, and 

 abdominal segments four to five, rufous ; wings very slightly infuscated, 

 veins and stigma black. Length, 8 mm. 



Habitat : Lake Forest, 111. (J. G. Needham). 



Dolerus agcistus, n. sp. — $ . Surface of the scutellar appendage 

 longitudinally striate ; head viewed from above with a deep transverse 

 furrow, rounded at bottom, extending from the lateral ocelli to beyond the 

 hind angles of the eyes ; head without a fine ridge extending from the 

 eye toward the occiput ; mesonotum with the impunctate area on the 

 sides of the lateral lobes extending broadly to the margin of the median 

 lobe; mesonotum finely, densely punctured; body black, with the prothorax, 

 tegulae, median lobe of the mesonotum, upper half of the mesopleurae, the 

 metapleurae, and the abdomen; except the saw-guides, rufous ; wings 

 infuscated, veins black. Length, 9 mm. 



Habitat : Lake Forest, 111. (J. G. Needham), and Durham, N. H. 

 (W. & F.). 



Dolertis stugfius, n. sp. — 9 • Surface of the scutellar appendage 

 transversely striate ; mesonotum with the impunctate area on the sides of 

 the lateral lobes almost entirely wanting, at least, always separated from 

 the median lobe by a narrow punctate area; head when viewed from above 

 with a transverse furrow extending across behind the eyes, interrupted by 

 an oblique ridge extending from the postocular area to the upper posterior 

 corner of the eyes ; lateral lobes of the mesonotum not so densely punc- 

 tured on the disk as at the sides ; body black, with the prothorax for the 

 most part, a spot on each side of the median lobe of the mesonotum, the 



