44 



THE CANADIAN ENTOMOLOGIST. 



circular sensoria in a row and usually on basal two-thirds or three- 

 fourths; segments V and base of VI with the usual distal sensoria. 



Eyes blood red, ocelli brownish. Beak reaching nearly to coxae of 

 second pair of legs. Thoracic plate yellow or orange yellow. 

 Wings large, with narrow but prominent dark brownish veins, the 

 venation as shown in illustration. Legs with basal half of femora 

 pale green and the distal half becoming dusky to blackish, tibiae 

 pale brownish with black tips, and tarsi black; hind tibia rather 

 long, being nearly one-half longer than the middle tibia. Abdo- 

 men pale green, with a moderately narrow median longitudinal 

 dorsal line of a darker green extending to length of the abdomen; 

 the reddish eyes of the unhatched young often showing through 

 the body wall. Cornicles pale transparent green at basal half, 

 becoming dusky to blackish at the distal end; reaching beyond tip 

 of cauda; cylindrical and rather narrow; the tip distinctly reticu- 

 lated. Cauda concolorous with abdomen, ensiform. 



Measurements of living individuals and specimens in balsam, 

 as follows: Length of body, not including cauda, 2.36 — 3.56 mm., 

 average 2.72 mm.; length to tip of cauda 2.71 — 3.83 mm.; average 

 3.21 mm.; width of body 0.85 to 1.47 mm., average 1.02 mm.; 

 length of wing, average 4.84 mm.; width, average, 1.66 mm.; 

 cornicle, average, 1.75 mm.; cauda, average, 0.46 mm. 



Antennal measurements as follows: 



ANTENNAL SEGMENT NO. lm 



