:y)2 THE CANADIAN ENTOMOLOGIST. 



of the white secretion. Under a lens the long wax filaments were seen 

 to curl up in a slight curve from the body. 



June 26, 1909. — The flat crab-like nymphs in the last or pupal instar 

 are at this date full grown and ready for the transformation. The thin 

 wing-pads lie flat upon the dorsum. Antennae, legs, wing-pads and tip of 

 abdomen are dark smoky. The general colour of head, thorax and 

 abdomen is green. Antennae with ten joints. Hind tibia; and tarsi with 

 spurs similar to those of the adults, but less pronounced. Length of 

 body, 3.19 mm. 



At this stage the nymphs are densely covered with a fluffy, silky 

 flocculent mass, and look like walking ostrich-plumes. The ventral 

 surface of the terminal leaves is by this time well filled with the white stuff, 

 as well as the new growth of the twigs for four to six inches from the tip. 

 A heavy storm dissipates this. 



June 26, 1909. — The mature winged forms are present in great num- 

 bers on the ventral side of leaves, freshly emerged and not yet taken to 

 flight. (Mature specimens dated July 26, 1905, and August 17, 1905, are 

 in the Station collection.) The following colour descriptions are made 

 from fresh material. Older specimens may not retain the same tints : 



Mature Form. — Length of body of female, 4.2 mm.; male, 3.5 mm 

 Head, thorax, abdomen clear blue-green. Thoracic lobes and transverse 

 portions of the abdominal segments are tinged with yellow, so that the 

 Psyllid has a yellowish-green appearance. The ocelli are orange-yellow. 

 Antenna? with ten segments ; i-ii are pale green, iii-iv-v are whitish 

 with discal joints black, remaining segments are black. The number of 

 antennal joints is not constant, the segmentation varying even on the two 

 sides of the same Psyllid. Ten seems to be the normal number. A 

 single large round sensorium is present at the distal portion ofiv, vi, viii and 

 ix of both the male and female ; x is tipped with two stout hairs. 



Legs have femora green, tibia and tarsus whitish, with black claws. 

 Tibial and tarsal spurs of hind leg black. At the base of the last pair of 

 legs is a pair of prominent green spur-like projections extending caudad. 

 The caudal tip of the abdomen is yellowish-brown. 



Along the extreme distal tip of the hind tibia are seven sharp spurs. 

 At the distal tip of the first tarsal joint are two similar spurs. 



The wings are uniformly transparent, and are veined as is typical for 

 the genus. All the veins except that of the claval suture are distinct in 

 the fore wing. The veins in the hind wing are almost invisible. Length 

 of fore wing, 5.35 mm. 



