82 Thomas Albert Williams 



Winged viviparous female: Color as in apterous female, but with less 

 pulverulence and head and thoracic lobes brown to black. Eyes dark red. 

 Beak as in apterous, but more of it black. Antennae much as in apterous, 

 only more shining black, rather longer, and ITI with more and larger 

 sensoria. Wings with yellowish insertions, subcostal and stigma, the latter 

 rather long and pointed; oblique veins slender, brownish; cubital obsolete 

 at base. Legs, honey tubes and tail as in apterous female, but the two 

 former with rather more black. Length of body 2.45 mm., to tip of wings 

 4.40 mm. 



On Artemisia ludoviciana. Ashland, Lincoln, Fremont, June- 

 October. Always in very small colonies or solitary, on the upper 

 leaves and among the flowers. 



Specimens in the collection of the University of Nebraska (nos. 

 143, 144) and of the U. S. National Museum (no. 399). 



106. Siphonophora luteola n. sp. 



Apterous viviparous female: Almost linear, very bright shining yellow. 

 Antennae twice as long as the body, on medium sized frontal tubercles ; 

 shining black, with yellowish base; III with a few scattered sensoria, 

 shorter than VII. Eyes black. Head broad. Beak reaching hind coxae, 

 obtuse, apical third black. Legs robust, long, pilose, proximal two thirds 

 of femora yellow, rest all black. Honey tubes dusky at base, growing 

 blacker towards the tip, 080 mm. long. Tail robust, upcurved, yellow, 

 about 0.50 mm. long. Length of body 2.10 mm. 



Pupa: Very similar but with members generally shorter and paler. 

 Wing-pads concolorous with abdomen. 



A very pretty species found on golden rod {Solidago missouri- 

 ensis). Ashland, September 20, 1890. In small colonies on the 

 upper leaves and flower stalks. It is similar to 5". ludovicianae 

 Oestlund in some respects, but has longer antennae, black eyes 

 and none of the characteristic mealiness of that species, besides 

 being of a very bright yellow color. 



Types in the collection of theU. S. National Museum (no. 398). 



107. Siphonophora menthae Buckton. 



Buckton, Mon. Brit. Aph., I, p. 120, pi. IX, figs. 1, 2 (1876). 



Thomas, Ins. 111., 8th Rep., p. 68 (1879). 



Apterous viviparous female: Long oval, narrow at the head, very broad 



at middle of abdomen. Lively green, transparent and often permitting 



the eyes of the embryos within to appear as red specks. Abdomen usually 



exhibits delicate lines, as if they were the sutures of horny plates. An- 



166 



