160 INSECUTOR INSCITI^ MENSTRUUS 



with thin white or yellowish white and a few brown scales, and 

 many brown bristles, the ventral aspect light ; brown bristles 

 at the apex give a slightly darker appearance. Tibiae much the 

 same, ventrally light, and the apex is somewhat darkened by 

 the dark brown bristles. The first tarsals are light, with nar- 

 row apical dark bands ; second tarsals on fore and mid legs 

 have narrow dark apical bands, which are a little wider (one- 

 third the length) on the hind legs; all the third tarsals dark 

 with apical bands, about one-third the length of the joint ; 

 fourth tarsals are also apically dark, at least one-half the length 

 of the joint ; the fifth tarsals are dark in the fore and mid and 

 with only a narrow light band on the hind legs. 



Ungues are all uniserrate. 



Wings : yellow, clear, veins yellow, clothed with long 

 "Taeniorhynchus" like scales mostly thin yellowish white or 

 white with rich dark reddish brown scales intermixed, in both 

 median and lateral scales, and some even in the fringe, but not 

 so as to form definite spots. The ventral scales are appar- 

 ently all white. The first submarginal cell is a little longer 

 and nearly one-half narrower than the second posterior, its 

 stem nearly as long as the cell, but the length of the cells and 

 stems, and the length and position of the cross veins vary, the 

 latter always at right angles to the veins, but the distances 

 varying from the full length of the cross vein to less than half 

 its length. The halteres are entirely light. 



Length : body 8.5-9 mm., wing about 7 mm., proboscis, 

 3.5 mm. ^ 



Taken, Selenga, July 10, 20, 21 ; Vladivostok, August 5, 

 Verkhne Udinsk, August 12, 1919. 



Described from twenty-two females sent by the Surgeons 

 with the American Expeditionary Force, Siberia, at these sta- 

 tions : Major R. E. Graham, M. C, U. S. Army, at Verkhne 

 Udinsk; Major J. P. Truax, M. C, U. S. Army, Emergency 

 Hospital, Vladivostok ; First Lieut. J. Kopecky, M. C, U. S. 

 Army, Selenga. 



The insect as a whole is brilliantly copper colored and 

 stands out conspicuously in a collection of other mosquitoes. 



I 



