194 THE CANADIAN ENTOMOLOGIST. 



Found on black oak at Plattsburgh, N. Y., and Weehawken, N. J. 

 In the single specimen bred, the wings are but very faintly smoky. 



Blennocampa spircea, n. sp. 



Antennae as long as head and thorax ; third joint about one and 

 one-half times as long as fourth. First recurrent nervure received almost 

 at base of second submarginal cell, second near base of third cell ; 

 lanceolate cell petiolate, under wing with no middle cells. Black ; tips of 

 femora, all of tibiae and tarsi, sordid reddish luteous, the claws often 

 smoky ; tegul?e black or with the outer half white ; two dots behind 

 scutellum, white ; wings hyaline, nervures and stigma black, except close 

 to the base, where the nervures are pale. Head and thorax very finely 

 pubescent. Rarely the tibiae are faintly blackish, especially the anterior 

 pair. Length : $ , 6 mm.; ? , 6.5 mm. Four males, five females. 



Larva. — Eating the young leaves of Spircea salicifolia, and dis- 

 appearing before the middle of June ; sitting flat on the venter, solitary, 

 but many on a bush. Keene Valley, N. Y. Head pale greenish, not 

 shining, mouth brown, ocellus covered by a black spot ; width, 1.2 mm. 

 Abdominal feet on joints 6-12 and 13; thorax a little enlarged, body 

 very slightly flattened ventrally and tapering posteriorly. Several little 

 white pointed elevations, like sharp teeth with two cusps ; two of them 

 ad-dorsal on each segment, two sub-dorsal, a single i-cusped dot later- 

 ally anteriorly, three in a triangle stigmatally posteriorly and six on sub- 

 ventral fold. Body pale bluish-green, not shining, closely like the leaf in 

 colour. 



Last stage. — Head testaceous, hardly shining, eye black ; width, 

 1.2 mm. Body smooth, 5 -annulate, pale yellowish - green, scarcely 

 shining and rather opaque. On acquiring this stage, the larvae enter the 

 earth. The flies appeared the following April. 



Monostegia rosce, Harris. 



Larva. — Head higher than wide, angularly pyriform, widest through 

 the eyes. Pale brown, not shining, eye and mouth black ; width, i.o 

 mm. Abdominal feet present on joints 6-12 and 13 (22 feet); thoracic 

 feet not large, not seen from dorsal view. Body smooth, sub- 

 translucent yellowish, broadly green dorsally from the food showing 

 by transparency, 6-annulate, not shining, without marks. Under a lens, 

 very slight concolorous pointed elevations represent the tubercles. These 

 are faintly blackish towards the extremities. 



