192 THE CANADIAN ENTOMOLOGIST 



apically, the distal half of the venter of the abdomen and femora 

 rufous; tibire and tarsi mostly yellowish; tibiae and the distal 

 tarsal segments apically reddish brown. 



Female. — Length 5.5 mm., to tip of ovipositor 7 mm. Similar 

 to the male and black, except as follows: Antennae dark brown, 

 the third segment almost blackish; clypeus, labrum, mandibles, 

 tegula\ the apex of the abdomen dorsally, the posterior margins 

 oif the basal segments and the distal third of the abdomen ^'entrally 

 (except the black ovipositor), femora and tibia? yellowish or ferru- 

 ginous; the tarsi reddish brown, the posterior darker. 



Described 'from two males and one female. 



Acantholyda ferruginea, n. sp. The sawfly described below 

 differs so greatly from any accessible descriptions, that we have 

 been unable to refer it to known species. It was taken on the 

 summit of Mount Marcy in the Adirondacks, July 31, 1913. 



Male. — Length 7 mm. Head brownish black, coarsely and 

 irregularly punctured and with anterior and posterior yellowish, 

 ovate, orbital spots; mandibles fulvous. Antennal segments 21, 

 the first black, with irregular, narrow, yellow annulations basally 

 and apically, the second yellowish brown or dark brown, yellowish 

 apically; third segment shorter than the fourth and fifth com- 

 bined, the others successively shorter; the third to ninth yellowish 

 brown, the distal segments mostly dark reddish brown. Thorax 

 and abdomen brownish black, the segments of the latter narrow- 

 ly margined with yellow, the markings on the three posterior seg- 

 ments angulate. Wings suffused with ferruginous, only two sub- 

 marginal cells, the second cross-vein wanting; venter, coxae and 

 femora brownish black the tibiae and tarsi dark fulvous. 



ERRATUM— Plate IX. 

 We regret that the lettering for Plate IX, in our May issue, 

 illustrating Messrs. Brittain and Saunders' article, "Notes on .the 

 Black Apple Leaf-hopper," was omitted. The figures are arranged 

 from top to bottom of page: Figs. 1-4 on left. Figs. 5-7 on right. 

 The magnifications are as follows; Fig. 1 (x 43), Figs. 2-4 (x 29), 

 Fig. 5 (x 23), Fig. 6 (x 19), Fig. 7 (x 17.5). 



