18 THE CANADIAN ENTOMOLOGIST. 



of the dorsum upon either side. In some specimens, however, the green 

 colour is quite distinct and pronounced. The whole body, in some speci- 

 mens, is tinged more or less distinctly with flesh colour, the head being 

 the lightest. The distal portions of the antennae, tibi?e, cornicles, beak 

 and the entire tarsi infuscated ; eyes dark red ; entire length of body 2 

 mm.; antennae 2 mm. Joints of antennae about as follows : I and II 

 together .10 mm.; HE .40, IV .34, V .31, VI .10, and VII .80 mm. 

 Cornicles .70 to .80 mm. long, gently curved in form and quite slender. 

 Style rather long, upturned. The body has many capitate hairs, but there 

 are none of these hairs upon the antenuce or legs ; the tubercles for the 

 antennye are quite prominent and slightly gibbous. The first joint of the 

 antenna is much larger than the second, and strongly gibbous on the inner 

 side, giving the appearance of receiving joint 2 upon the outer side. There 

 is a slight frontal prominence bearing two capitate hairs; prothoracic 

 tubercles wanting. The lice have been so numerous upon the thistles as 

 to utterly kill many of them. 



Apte7-oics Oviparous Female. 



Mr. Bragg and I have been searching for the oviparous females for at 

 least two weeks, and those obtained to-day (Oct. 5, '07) are the first that 

 we have noticed this season, although I saw a few eggs upon thistles one 

 week ago. There certainly is not more than one oviparous female to 100 

 males upon the plants at this time. The eggs are bright yellow in colour 

 when first deposited, but gradually change to black. I am able to find 

 but very few of these upon the stems and leaves of the thistles, but they 

 are scattered in small numbers over the plants. I'his form closely 

 resembles the apterous viviparous form. A technical description has not 

 been made. 



The Pupa. 



The pupse are light greenish-yellow in general colour, with two longi- 

 tudinal dashes running over the mesothorax, with a large green spot on 

 either side of the first segment of the abdomen, and with a broken 

 longitudinal line of green on either side of the dorsum of the abdomen 

 extending over segments three, four, five and six. This green colour is 

 a very conspicuous marking upon the light background of the general 

 colour of the pupa. 



I find that my winged males for a time retain the green colour mark- 

 ings that are so prominent on the apterous females and the pupiB. After 

 a {t\i hours' exposure to the daylight these winged males lose the green 

 colouring and take on the dark colouring of the abdomen mentioned 

 above. All of the individuals seem now (Oct. 5) to be acquiring wings, 



