THE CANADIAN ENTOMOLOGIST. 51 



pale yellowish bristles, some long yellowish bristles on pleurse and pos- 

 terior dorsum of thorax, and a long pair arising from sides of scutellum ; 

 scutellum blackish at base, pale yellowish on margin and apex. Abdo- 

 men rufous or dark fulvous, anal segment black, ovipositor rufous. Legs 

 entirely pale yellowish. 



Length of body (inch ovipos.), 5 mm. ; of wing, nearly 4^ mm. 



Described from one specimen bred by Professor C. P. Gillette from 

 galls collected at. Dolores, Colo., June 18. Issued June 19. 



An imperfectly-hardened $ , which I collected in Johnson's Basin, 

 in Western Socorro county, N. M., June 23, differs in the lighter abdo- 

 men, rufous anal segment ; the more grayish short bristles of thorax, and 

 darker long bristles of thorax and scutellum ; in the oblique white mark- 

 ing of apical cell being united with the distal one of second posterior cell ; 

 and by the large inverted V-shaped marking of second posterior cell 

 being represented by an oblique elongate marking parallel to the pre- 

 ceding, and a short marking inside it, both bordering on the hind margin 

 of wing. It will need more material to establish the distinctness of this 

 specimen. 



Puparium of E. bigelovioz, containing pupa : Length, 4 mm.; greatest 

 width, 2^ to 2 2-5 mm. Stouter posteriorly, rufous on posterior portion 

 and brownish anteriorly, eyes and wings of pupa showing beneath pupari- 

 um as black spots. Puparium showing twelve segments, counting anal 

 and capital plates. Mouth parts of larva showing in centre of capital 

 plate at anterior end of puparium as a very small, central, raised circle, 

 with usually eight primary radiating ridges, their length less than twice 

 the diameter of the circle, these ridges longitudinally and often deeply 

 fluted, giving appearance of smaller, more numerous ridges ; a pair of 

 circles exactly similar to the central circle placed on outer margin of the 

 area of radiating ridges, a little dorsally of the central one, and with it 

 forming the three corners of a triangle ; from the central circle there ex- 

 tends ventrally a linear, elongate, forked black body seen beneath the in- 

 tegument of the puparium. Anal stigmata showing in centre of ana- 

 plate as a pair of small blackish spots, each bearing three principal black 

 tubercles arranged in a slightly crescentic form with the convexity ventral, 

 and a smaller black tubercle in concavity of each crescent, one or more 

 other still smaller ones sometimes apparent ; a small, depressed median 



