A NEW SPECIES OF TOXOPTERA. 



with the head; III ])ji1c but sliglitly duskv; TV and V ])alc dusky; 

 VI blackisli, slightly more thau one-half the length of the bod}'; fila- 

 ment of VI longest, it bcmg one-fourth longer than III; III and IV 

 subequal, and base of VI a little more than one-third of III. (iSee 

 fig. 4, h.) Beak not reaching to the coxje of the seeond ])air of legs. 

 Legs pale, excepting the distal ends of the tibia*, which are dusky, 

 and the tarsi, which are black. Hind tibia (iig. 4, c) swollen and 

 bearing 15 to 21 rather large but inconspicuous sensoria. Cornicles 

 c^'lindrical, ])ale yellow or greenish yellow, and about one-third longer 

 than the hind tarsus. Style concolorous with the cornicles and 

 slightly longer than the tai-sus. The position assumed by the ovip- 

 arous females is similar 

 to that of other species, 

 namely, with the hind tibiai 

 held back along the abdo- 

 men, and the abdomen 

 tilted upward. 



^leasurements (from spec- 

 imens recently moimted in 

 bjilsam): Length of bod}', 

 average, 1.796 mm.; width, 

 average, 0.7855 mm.; an- 

 tenna, I, 0.057 mm.; II, 

 0.048 nmi. ; III, 0.163-0.2363 

 mm., average, 0.2052 mm.; 

 IV, 0.0978-0.1467 mm., 

 average 0.1254 mm.; V, 

 0.1141-0.1548 nmi., aver- 

 age, 0.1368 mm.; VI, base, 

 0.0652-0.0815 mm., aver- 

 age, 0.0748 mm.; VI, fila- 

 ment, 0.2282-0.29 nmi., 

 average, 0.2589 mm.; aver- 

 age total, 0.9061 mm.; cornicles, average, 0.1596 nmi.; style, average, 

 0,1237 mm.; hind tarsus, average, 0.1042 mm. 



Described from 12 living specimens. Types mounted on six 

 slides. October 8, 13, 16, and IS, 1909. In the collection of the 

 Bureau of Entomolog}', U. S. Department of Agriculture. 



EGG. 



(Fifr. 5.) 



Pale yellowish when first laid, gradually changing to pale green, 

 then dark green, anil finally to jet black. They are deposited singly 

 on the leaves of Muhlenbcrgia. Form elliptical-oval. Measurements: 

 Length, 0.56 mm.; width, 0.26 mm. 

 26459°— 12 2 



Fig. 4.- 7'ojopAra inuhlcnbrrgior: a, Wingless oviparous 

 female, greatly enlarged; 6, antenna of same, more en- 

 larged; c,hind tibia of same, moreenlarged. (Original.) 



