» THE CANADIAN ENTOMOLOGIST. 129 



MOSQUITO NOTES.— No. 5.— Continued. 



BY C. S. LUDLOW, M. SC, 

 Laboratory of the Office of the Siirg^eon-General. U. S. Anny, \\'ashington. D. C. 



In the article describing Grabhainia nigromaculis* mihi, reference 

 was made to a group of mosquitoes in the north-western part of the U. S., 

 and probably occurring also in Canada, in which the species are closely 

 related and the individuals show great variation, and to which nigrotna- 

 culis belonged. Two more of this group are described below, one of 

 which lies close to G. Ctirriei, Coq., but the distinct, clean-cut abdominal 

 markings and difference in colouring are characteristic ; though corre- 

 sponding to the habit of the group, there is variation among the individuals. 



Grabhainia medioiineata, n. sp. — (Female.) 



Head dark brown or black, covered with long, curved, pale, almost 

 white scales, a few ochraceous ones; bright brown flat lateral, and slender 

 white forked scales on the occiput, some brown bristles betvveen the eyes 

 and around the eyes ; antennoe dark brown, verticels dark brown, 

 pubescence white, first joint testaceous, and in some lights all the joints 

 are apparently light banded, basal joint testaceous, with slender flat white 

 scales on the median surface ; palpi black, a few white scales at the tip, 

 and occasionally at the base of penultimate joint ; jjroboscis black and 

 quite long, tip black; clypeus black ; eyes bla:ck and silver. 



Thorax black, prothoracic lobes with long pale ochraceous curved 

 scales (spatulate ?) ; mesonotum covered on the median third with bright 

 brown slender curved scales for about two-thirds its length, the caudad 

 third with slender pale curved scales ; immediately laterad of this median 

 stripe is a broad pale stripe of rather broader curved scales, and exterior 

 to this another stripe of brown curved scales extending to the wing joint ; 

 scutellum black, covered with long slender curved scales ; pleura black, 

 with long white spatulate scales ; metanotum black. 



Abdomen black, covered with black and white or " dirty-white " 

 scales, so arranged as to make a slender median light line, transverse white 

 bands mostly basal, but involving both segments, and on the more caudad 

 segments are almost entirely apical, the distal segments being in some 

 cases mostly white ; white lateral spots, which are really extensions of the 



* \ new American mosquito. 



The University Bulletin, The Georg^e Washing^ton Univ., Washington, D. C, 

 Jan., 1907, 

 •\pril, 1907 



