238 THE CANADIAN ENTOMOLOGIST. 



mens: four with two middle cells in hind wings, five with one middle cell, 

 and seven with no middle cells (five of the latter are males ; all the rest 

 females). Larva with the pale head described in Trans. Amer. Ent. Soc, 

 1S67, and Can. Ent., XXVIL, 195, as M. q.-albce; with black head, 

 described. Can. Ent., XXVI., 43, and XXVIL, 195 (the last time as 

 Caiiroa ob sole fa). 



2. On black oak, rarely on white oak and yellow birch ; sides of 

 thorax orange tinted ; head whitish or black. Imago, nine specimens : 

 seven with two middle cells in hind u^ings, at least on one side ; two with 

 one middle cell on both sides. Larva v/ith pale head described. Can. 

 Ent., XXVI. , 42, as M. q.-coccinece ; with the black head. Can. Ent., 

 XXVIL, 193, as Eriocampa fasciata. 



3. On wild cherry, entirely pale, and never gregarious, as the two 

 preceding generally are. Imago, four specimens with no middle cells in 

 the hind wings. Larva described as Caiiroa obsoleta. 



Pristiphora grossularicn, Walsh. 



Larvai common on gooseberry at Jefferson, N. H. The four last 

 stages were observed with widths of head .4, .6, .8, 1.2 mm. The seg- 

 ments are obscurely 6-annulate, with minute dark setee on the second and 

 fourth annulets, and on the subventral region ; no anal prongs. Walsh's 

 description is sufficient. 



Pristiphora tibialis, Norton. 



I have already described this larva on birch and willow. The 

 occurrence on the latter food plant would seem to confirm Norton's 

 original suggestion that the species is the same as P. sycophanta, Walsh, 

 since the larv^ might have entered a deserted gall on their food plant 

 when preparing to spin and thus be classed by Walsh as " inquiline." 

 More recently I have bred P. tibialis on high bush huckleberry 

 (Vaccinium) from near New York City. The following is a description of 

 the single larva found on this plant: Abdominal feet on joints 6 to 11. 

 Head pale testaceous greenish, a brown shade from the eye to the vertex 

 and a darker one on the median suture, spreading out on the clypeus ; 

 width 1.3 mm. Body clear green, rather dark; dorsal vessel a distinct 

 black band edged with a broad green stripe of fat-granules which fade 

 away to near the lateral area, blending into the ground colour. On joint 

 13 a dorsal and subdorsal mass of fat, the end of the joint solidly filled in 

 with the green fat. Segments rather distinctly 6-annulate; subventral 



