1912.] 9 



at the end of W' ; first joint in anteimai of ^ sliorter than the second 

 and third joints combined ; and the nodules of most of the joints of 

 the flagellum largely protuberant on one side. 



Short Diagnosis of the Species : differences in 



WINCt-NEITRATION. 



A. The vein E" ends in 3 directly opposite the end of Cu-, but in ? just 



beyond this. 



Axils of the sectorial and median forks in a direct transverse lino in 

 (J with the end of vein A, but in ^^ with a point a little beyond this. 



...94, advena, Etn. 



Axils of the aforesaid forks in an ol)lique straight line sloping oiit- 

 wards from the sectorial axil to, in S the end of vein A, but in ? , to a 

 point just beyond this 95, rothschildii, sp. n. 



B. The vein E' ends opposite or almost opposite the end of Cu.' Axils of the 



aforesaid forks in an oblique straight line sloping inwards from the 



sectorial axil to a point a little interior to the middle of vein A 



96, meridionalis, Etn. 

 The niunerals prefixed to the names are indices to a series of microscopical 

 preparations of Psychodidse, niimbered species by species in their systematic 

 succession throughout the family, with letters after the nmnerals distinctive of 

 individual slides, many of the preparations being of sufficient importance to be 

 cited in the manner of botanical typical exsiccati. 



Telmatoscopus rothschildii, sp. uov. 



Wing-markings similar in style to those of T. advena, but the ground-colour 

 darker. Pubescence of frons, vertex and thorax as far as the wings, vvhitish, 

 but behind this and on the abdomen almost sepia browi. Wings blackish gi-ey, 

 with inconstant markings dependent upon the direction of light, fringes glossed 

 with a shifting whitish-flaxen satiny lustre, involving the luuneral tuft and tlie 

 hair of the alulse, and the tips of the hairs at the ends of E ^ and A ; near the 

 dark-outlined apical margin, a narrow chevron of appressed distichous hairs, 

 before tlie ends of the nervures from E^ to Cu-, is similarly glossed ; from some 

 points of view the ranks of bristling hair on E-, E^ E^ M', M", Cu-, and A are 

 of the gi-ound-coloiir, with a few whitish hairs inclined outwards at their ends, 

 but from other stand-points they become wholly ^^•hitish ; and by timiing al)out, 

 small dark cuneate spots of divergent hairs at the ends of nervures become 

 visible just at the margin. Legs and tiliial fringes of a similar dark tint, with 

 a similar shifting whitish gloss ; the tibia and the first two or more of the tai-sal 

 joints, on their exposed side, edged narrowly at the tips with snow-white glossed 

 scales, this lustre under an olilique light gi-owingmore diif used over the further 

 joints. Penis ill-displayed in the preparations. Length of wing, 2 to 2-5 mm. 

 Hab. England; Hyde Park, Loudon {ButhHchild) , Preps. Etn. D5 

 a. b. c?,c. ? (15.vii.l910). 



Novemher, 1911. 



