THE CANADIAN ENTOMOLOGIST. 67 



AVe have found this louse common in greenhouses in Colorado, and 

 upon chrysanthemums only. We have seen no sexual forms. 



Nectarophoi-a chrysanthemt, Oest, was taken upon a composite, 

 Bidens chrysant/iemoides, one of the Bur-Marigolds, and not upon 

 chrysanthemum. 



Brachycolus Bal/ii, n. sp. 



A long, slender, flat, thrip-like louse with very short legs, antennae 

 and beak, and without cornicles ; body more or less pulverulent through- 

 out. On Car ex sp. 



Wi?igless Viviparous Female. — (Plate 3, figs 10 and 11.) 



General colour very light greenish-yellow, mottled heavily with dusky 

 spots above and below, and covered with white bloom. Body very long 

 and narrow; medium length, about 2.25 mm.; width, .75 to .80 mm.; an- 

 tenna, .80 mm. Joints : III .19 ; IV .13 ; V .14 ; VI .14 ; VII .09 mm. 

 The cornicles are mere circular openings rnidway upon the 6th segment, 

 and often difficult to find ; cauda knobbed, short ; supragenital or anal 

 plate bifid ; vertex evenly rounded and quite convex ; eyes very dark red 

 and entirely without tubercles ; legs short and stout, the third pair hardly 

 attaining the 7th abdominal segment ; beak extremely short, not attaining 

 2nd pair of coxae. 



The dusky colour is usually solid upon head, pro- and mesothorax, and 

 about 3 or 4 of the terminal segments of the abdomen above, and there is 

 a large dusky spot on either lateral margin of each segment. Legs and 

 antenna dusky to blackish ; hairs upon legs, antenna and body short and 

 fine but fairly abundant. 



Described from many specimens taken at Fort Collins, Aug. 9, Oct. 

 30 and Dec 3. I have also taken specimens at Rocky Ford, Colo. All 

 our specimens have been taken from Carex Nebraskensis. 



Apterous Oviparous Female. — (Plate 3, figs. 12, 13 and 14.) 



Length of body, 2.90 mm.; greatest width, .96 mm.; length of antenna, 

 1.37 mm. Joints : III .43, IV .26 ; V .26, VI .17, VII .15 mm. Legs 

 very short ; anterior tibiae, .60 mm. long. Eyes without tubercles. Gen- 

 eral colour a pale greenish-yellow, with slight dusky transverse lines, more 

 or less broken or indistinct at each suture of thorax and abdomen. Eyes 

 black or very dark red ; antenna black beyond 2nd joint, but more or 

 less covered with a white pulverulence ; tarsi and posterior tibiae and a 



