THE CANADIAN ENTOMOLOGIST. 191 



covered with long silky plumed pinkish gray hairs ; the medio-dorsal hairs 

 blackish, forming a dark dorsal line ; prolegs reddish ; spiracles creamy, 

 rimmed with black. Length 28-30 mm. 



Pupation in a coarse cocoon of mixed hairs and earth on or just 

 beneath the surface of the ground. 



Pupa of the usual type, with immoveable segments, dark brown. 

 One pupa out of sixteen emerged during July ; the remainder are 

 hibernating. 



Food plant. — Spurge (Euphorbia). 



APHID NOTES FROM OREGON. 



BY H. F. WILSON, CORVALLIS, OR, 

 ( Continued from pag-e 159.) 



Stem-mother, — Collected on terminal ?,\\oois oï Pseudotsuga donguissii 

 about Corvallis, Oregon, March 15, 19 11. 



General colour light brown, with two rows of black spots extending 

 midway along the dorsum to the middle of the abdomen. These spots 

 sometimes join so as to give the appearance of two dark lines extending 

 along the body. Body semi-shining and with faint traces of a light flaky 

 powder on dorsum. Legs and antennae dusky brown. After having been 

 mounted on slides for some time this species turns red and a deep red 

 colour is assumed by the balsam surrounding them. The abdomen is quite 

 large in comparison with the head and is almost globular. Antennae VI 

 segmented, and about one-fifth the length of the body. The nectaries are 

 but sm.all round tubes slightly elevated ; they are about as wide as long 

 and are situated on the side of the abdomen about t'.vo-thirds of the way 

 from the base of the thorax to the base of the cauda. Cauda broad and 

 slightly angled, very short. 



Measurements: Length of body, 3.8 mm.; width, 2.99 mm. Length 

 of antennal segments, I, .09; IÎ, .09; III, .3; IV, .135; V, .135; VI, .12; 

 spur, .045 mm.; total length, .87 mm. Length of cauda, .3 mm.; 

 nectaries, .022 mm. 



Spring migrant. — Collected June 4, 191 1, on terminal shoots of 

 same host plant. General colour of head and thorax dark or dusky. 

 Abdomen greenish brown, with colouring of white powder. Legs and 

 antennae, except tarsi and tips of third, fourth, fifth and six segments, light 

 brown. Other parts dusky to black. Antennae about one-fourth the length 

 of the body. Head rounded in front and with a suture or line extending 



June. 1812 



