NEMESTRINIDiE. 145 



in size ; palpi 1- to 3-jointed, often indistinct. Antennae remote 

 at their bases, small; the two basal joints with stiff hairs, 3rd 

 barely longer, onion-shaped or pointed, with a long bristle-like, 

 generally 2-pointed style, which is longer than the antenna?, and 

 sometimes pointed at tip. 



Thorax approximately quadrate, humeri inconspicuous, scutel- 

 lum oval, variable in size, unarmed. 



Abdomen comparatively short, a little longer or shorter than 

 and about as wide as the thorax. 



Legs comparatively slender, moderately long ; tibiae unspurred ; 

 three pulvilli, slightly variable in form, claws long. 



Wings of moderate size, often narrowed and elongate, always 

 with very characteristic venation, all the veins in the distal half 

 of the wing being practically parallel with its longitudinal axis, 

 except the so-called " diagonal vein," and all the veins ending 

 above the wing-tip, except the tips of two or three. This pecu- 

 liar venation gives a general resemblance to that of the Mydaid^:, 

 but there is no close affinity between the two types. Auxiliary 

 and 1st longitudinal veins long and straight, ending towards 

 wing-tip ; prsefurca very short, beginning a little before middle of 

 wing, 2nd and 3rd veins diverging almost immediately ; 2nd nearly 

 straight, undulating, simple, but sometimes joined by an addi- 

 tional veinlet to upper bi'anch of 3rd vein {Fallenia, Nemestrina) ; 

 3rd vein projected diagonally and turning up suddenly before or 

 at about half its length, shortly afterwards forked, the branches 

 either parallel {Nemestrina, Hirmoneura, Rhynchoceplialus) or 

 widely open, reuniting to form a small subtriangular cell {Fal- 

 lenia). Anterior cross-vein absent, as the 3rd and 4th veins 

 always anastomose at that spot* {i.e. at about two-thirds the 

 length of the discal cell) ; 4th vein with upper branch forked, the 

 two prongs parallel and ending above wing-tip ; lower branch 

 ending in (or united with) upper branch of 4th vein (just before 

 it forks) at distal angle of discal cell ; posterior cross-vein nor- 

 mally present (absent in Fallenia) ; 5th vein forked, both branches 

 forming rather pronounced curves ; upper one joining upper 

 branch of 4th vein between its upper and lower prong, thence 

 diverging and running for the very short remaining space to the 

 wing-margin ; lower branch of 5th vein turning down to wing- 

 margin after quitting posterior cross-vein, sometimes meeting 

 anal vein, closing anal cell ; anal vein undulating; axillary vein 

 short or rudimentary. First basal cell long, narrow, pointed at 

 the tip ; 2nd broader, shorter, roughfy speaking three-sided ; 

 anal cell long, narrow, open or closed just before wing-margin ; 

 two submarginal and four or five posterior cells, 4th always closed. 

 Thei'e is an apparent vein running diagonally across the wing, 

 beginning with the prsefurca and ending in the hind margin of 



* I am not quite sure about- this point. Even if a short cross-vein occurs 

 here I do not think it is the anterior cross-vein, but an entirely supernumerary 

 ■\ein. (See notes under Lasia in Cyetid,e.) 



L 



