60 THE CANADIAN ENTOMOLOGIST. 



Alaie viviparous female. — General colour orange-yellow, antennee, 

 thorax, distal ends of tibiae, nectaries and tip of cauda dusky ; wings 

 hyaline. Antennae with six segments, shorter than the body and not 

 placed on antennal tubercles. Spur of sixth segment longer than any one 

 segment, and about three times as long as the sixth; 5 slightly shorter than 

 4, and 3 and 4 about equal in length ; third segment with four to six large 

 round sensoria, fifth with one large sensorium near the distal end ; first 

 segment slightly gibbous at the upper inner angle. Head broad and nearly 

 flat, slightly elevated at the inner base of each antennae. Wings long and 

 broad, veins hyaline. Abdomen robust, nectaries tapering and bent out- 

 ward at the tip. Cauda two-thirds the length of the nectaries and knobbed 

 at the end. Anal plate broadly rounded, tip of cauda and anal plate with 

 a number of prominent hair-like bristles. Abdomen with a row of three 

 black spots on each side, and also with a number of dentate tubercles in 

 a line along each side. 



Measurements. — Length of body, 1.05 mm.; width, 0.45 mm.; antennal 

 segments, I, 0.05 mm.; II, .04 mm.; Ill, .17 mm.; IV, .14 mm.; V. .13 

 mm.; VI, .08 mm.; spur, .26 mm.; total length, .87 mm. Length of wing, 

 1.5 mm.; width, .56 mm.; total expansion, 3.82 mm. Length of nectaries, 

 .12 mm.; length of cauda, .06 mm. 



Apterous viviparous female. — General colour greenish-brown; 

 antennae, tarsi, tips of tibiae, and nectaries dusky. Antennae six-segmented, 

 nearly as long as the body and not on antennal tubercles. Antennal seg- 

 ments compare as in alate form. Body short and stout, nectaries tapering 

 and curved outward. Cauda broad, short and pointed. Abdomen with 

 a row of five or six dentate tubercles along each side. 



Measurefneiits. — Length of body, i mm.; width, .56 mm. Length of 

 antennal segments, I, .05 mm.; II, .04 mm.; Ill, .22 mm.; IV, .14 mm.; 

 V, .14 mm.; VI, .09 mm.; spur, .22 mm.; total length, .9 mm.; nectaries, 

 .10 mm.; cauda, .06 mm. 



Aphia mifiuta, n, sp. 

 Collected on Aero potato, Bureau of Plant Introduction greenhouses 

 at Washington, D. C. The plant belongs to the morning-glory family. 



Alate viviparous female. — General colour yellowish-green, antennae, 

 tarsi, tips of femora and tibiae, and nectaries dusky. Antennae with six 

 segments, not set on antennal tubercles, and as long as the body. Third 

 segment the longest, but the spur of the sixth is longer than the third and 



