120 ENTOMOLOGICAL NEWS. [March, 'oo, 



mere pores but plainly marked ; legs very short. Length of body 

 1.70 mm.; length of wing 2.43 mm.; length of antennae 1.06 mm.; 

 joints of antennae about as follows: Joints I and II together .14; III, 

 .31; IV, .17; V, .20; VI, .16; VII, .09 mm. Joint III of the antennae 

 has 7 rather small circular sensoria in a single row (Plate I, Fig. 6). 

 Length of hind tibiae, .54. There are neither ocular nor thoracic 

 tubercles. . 



The males of this species have not been apprehended with 

 certainty. 



Callipterns f labeling Sanb. 



This species was described by Prof. Sanborn from a single 

 apterous female from a doubtful food plant and as it occurs in 

 abundance at Fort Collins where we have taken winged and 

 apterous viviparous females in abundance, additional notes and 

 descriptions are here given. A quantity of alcoholic specimens 

 sent to Prof. Sanborn were determined by him as probably the 

 same as his type. 



While the louse may attack some of the grasses, we have 

 taken it by the thousand sweeping a small species of Carex that 

 is common on low natural meadow land. 



ADULT APTEROUS VIVIPAROUS FEMALE, PLATE I, FIG. i. 



The fully adult examples have been somewhat larger than 

 Prof. Sanborn's type, and also differ somewhat from his de- 

 scription and figure by having the head less cone-shaped, though 

 strongly convex, and the length (1.59 mm.) given for the anten- 

 nae is probably a mistake as I have always found the antennae 

 distinctly shorter than the body. It is probable that the figure 

 5 was intended for 3. 



Specimens taken at Fort Collins may be described as follows : 



Length, 1.70 to 2 mm.; width, .90 mm.; antenna, 1.40 mm.; 3d 

 joint as long as 4th and 5th together; 6th a little shorter than 7th; and 

 /th a little shorter than 5th. The single small circular sensorium near 

 the end of segment 5 is more distant from the end than usual, and 

 a similar one (or two) occurs near the end of segmenet 6. All seg- 

 ments are free from true hairs but are thickly set with minute points 

 giving the surface almost a velvety appearance as in the alate form 

 (Plate I, Fig. 4); no frontal tubercles; head rather strongly pro- 



