THE CANADIAN ENTOMOLOGIST. 387 



" Winged viviparous female : Body, 6 millimeters long by 3.5 

 millimeters wide across middle of abdomen ; head to tip of folded wings, 

 10 millimeters ; wing expanse, 18 millimeters; antennae, 3 millimeters; 

 posterior legs, 1 1 millimeters. 



" Head and thorax bluish-black, with a glaucous bloom ; antennae 

 and cornicles black ; dorsum of abdomen whitish, with two rows of black 

 spots on each side of median line, and a transverse series of small, black, 

 indented dots on each segment. Cornicles short, conical, truncate. 

 Ventral surface of abdomen yellowish-brown, with a glaucous bloom. 

 Coxae concolorous with thorax ; trochanters and femora, except tips, 

 reddish-brown ; tips of femora, together with tibia and tarsi, black. 

 Rostrum dusky, reaching posterior coxae. Body, legs and antennae 

 clothed with rather long, light brown hairs. Joints of antennae of same 

 relative length as in apterous viviparous form. Wings clouded, especially 

 towards base ; insertions reddish brown ; veins piceous. 



''Oviparous female : This form does not differ in external appearance 

 from the apterous viviparous female. 



" Winged male : Body, 5 millimeters long by 2 millimeters wide, 

 across middle of abdomen ; head to tip of folded wings, 9 millimeters ; 

 wing expanse, 16 millimeters ; antennae, 2.4 millimeters; posterior legs, 8 

 millimeters. 



" Head and thorax bluish-black, with a glaucous bloom ; antennae 

 piceous ; eyes black. Abdomen small, dorsum whitish, but nearly 

 covered with two rows of large black spots on each side of the dorso- 

 meson, and having transverse rows of less distinct indented black dots. 

 Ventral surface of abdomen yellowish-brown, with a glaucous bloom, 

 except posterior extremity, which is black. Coxae concolorous with 

 thorax ; trochanters and femora, except tips, reddish-brown ; tips of 

 femora, together with tibiae and tarsi, black. Rostrum dusky, reaching 

 slightly behind posterior coxae. Cornicles black, conical, truncate. 

 Body, legs and antennae clothed with rather long, light-brown hairs. 

 Antennae roughened ; joints of same relative length as in apterous 

 viviparous female. Eyes as seen from above subtriangular in form. 

 Wings clouded ; insertions light yellowish-brown ; veins piceous. 



"Egg: Length, 1.8 millimeters; width, 0.5 millimeter. 

 Elongate-ovoid. Orange brown at first, but changing on exposure to 

 shining black. Covered when first laid with a viscid substance by which 

 it is securely attached to the bark of the twig or limb. Great numbers 

 deposited together." 



