411 



299. Libnotes fiiscinervis, sp. nov. (PI. VIII, fig. 5 ; PI. XI, 



lig. 8.) 



d . Head : the distinct narrow frons aud face, and the whole 

 of the back part of the head bright yellow, with a very slight 

 brownish tiuge. Proboscis and palpi brownish. Antenual scape 

 yellow ; 1st joint long, cylindrical, 2nd short, broadly cup-shaped ; 

 iflagellum of twelve oval black joints, slightly pubescent. Thorax : 

 neck pale fawn, sides light brown. Dorsum of thorax pale fawn, 

 with a wide light brown median stripe from the anterior border 

 to the suture, where it stops abruptly, being slightly subdixided, 

 and with a spot on each side of it ; a brown band from the root 

 of the wing to anterior border of thorax ; the brown colour on 

 the dorsum covering the whole of the thorax behind the suture, 

 also that of the scutellum and metanotum, except for a broad 

 yellowish fawn median stripe ending on the scutellar hind border ; 

 sides of thorax yellowish grey with light brown marks. Abdomen 

 light brownisl) " yellow ; posterior borders of segments a little 

 lighter, distinct ;" belly blackisli with a pale median stripe. _ The 

 genital organs of considerable complexity : a dorsal plate, wide at 

 the base, narrowing to nearly half its width at about half its 

 length, where it is also much depressed (giving the appearance of 

 two doorsteps, the lower one much the narrower) ; a pair of thick 

 claspers, of two joints of nearly equal length, approximately 

 ovate but of somewhat irregular shape, the second of which 

 appears to possess four slender appendages, a long and a shorter 

 slightly curved tooth-like spine, a smaller two-jointed finger-hke 

 piece, "and a strong short curved black-tipped tooth-like spine ; 

 the 1st joint of the claspers bearing at its base a short thumb-like 

 piece towards its inner side ; a ventral plate, narrow, and slightly 

 contracted just before its tip. The whole genital organ is 

 brownish yellow and bears very few hairs. Legs brownish yellow, 

 microscopically serrate ; femora with a narrow ring just before 

 the tip; tibi« and tarsi blackish at extreme tips. Wings pale 

 grey, fore border and anterior part at tip yellowish. Submargmal 

 cell divided by a cross-vein just before the middle, a little before 

 the marginal cross-vein which latter exactly divides the marginal 

 cell; this feature has not been mentioned in connection with any 

 other species. With this exception the venation agrees precisely 

 with that of L. notata, Wulp (Tijd. Ent. xxi, pi. xii, fig. 5). The 

 veins, for the greater part of their length, carry dark brown 

 narrow suffusions, which (judging by the three examples before 

 me) appear to be regular in their distribution although varying 

 in intensity. The darkened portions are as follows :— the tips of 

 both the auxiliary and 1st longitudinal veins ; all the cross-veins, 

 and, for a short distance, the parts of the longitudinal veins con 

 nected by them ; the praef urea ; the basal fourth and last fourth 

 (except the extreme tip) of 2nd vein, also more or less of this 



