56 Thomas Albert Williams 



Specimens in the collection of the U. S. National Museum 

 (no. 107). 



68. Aphis saniculae n. sp. 



Apterous form: Uniformly green, with honey tubes, tail and legs gen- 

 erally darker than in winged form. Length of body about 1.90 mm. 



Pupae: Similar in color, honey tubes and tail lighter; wing-pads brown- 

 ish. Length of body about 1.50 mm. 



Winged female: General color green. Antennae pale to dusky; III 

 darkest, a little longer than VII. Ill, IV and V with a single row of 

 sensoria; III with the most and V with the least. Head brown. Eyes 

 reddish. Neck green. Prothorax light brown, with lateral tubercles. Thorax 

 brown, with greenish yellow lateral margins. Wings with yellowish in- 

 sertions, conspicuous brown veins and yellowish stigma. Stigmal vein 

 curved for its entire length. Second branch of cubitus nearer the apex 

 of the wing than to the first branch. Abdomen yellowish green, with 

 three small brown marginal dots on each side and one at the base of each 

 honey tube. Honey tubes and tail blackish, the latter acute, about one 

 half the former. Legs dusky. Tarsi brown to black. Antennae shorter 

 than the body. In a few specimens there are two or three pale brown 

 bands behind the honey tubes. Length of body about 1.50 mm., to tip of 

 wings about 2.50 mm. 



On under side of leaves of Sanicnla canadensis, causing them 

 to curl up into a pseudogall. Ashland, May 30, 1890, and War 

 Bonnet Canyon, June 21, 1890. 



Cotypes in the collection of the University of Nebraska (no. 

 86) and of the U. S. National Museum (no. 109). 



69. Aphis sativae n. sp. 



Apterous form: Very dark greenish brown to almost black. Antennae 

 on inconspicuous frontal tubercles; brown, with base darker and three 

 apical joints blackish; about as long as the body. Beak reaching almost 

 to hind coxae. Legs brown, with the tip of hind femora, all the tibial 

 tips and tarsi blackish. Honey tubes robust, 0.22 mm. long, not quite 

 twice the tarsi, black. Tail short, conical, concolorous with honey tubes. 

 Body short and broad, about 1.55 mm. long. 



Pupa: Same color as apterous form and similar in every respect except 

 that the head is rather larger, the size considerably smaller and the body 

 more slender. Wing-pads blackish. 



Winged individual: Blackish brown. Head, thorax, antennae, legs, 

 honey tubes, tail and marginal spots on abdomen black. Wings with 

 medium sized, brown veins ; the subcostal nearly straight ; the costal curved, 

 coming quite near to the subcostal just below the stigma, which is narrow 



140 



