EEPOK'l' OF 'I'HK KNTOIIOLOGICAL SECTION 105 



Wings witli short I'ork-Cflls ; the first a little longer and narrower tlian the second, 

 its base nearer the apex of tlie wing, its stem longer than the cell, stem of the second 

 fork-cell longer than the cell ; mid-cross vein longer than the supernumerai-y, posterior 

 as long as the mid, curved, about half its own length distant from it ; the second to the 

 sixth veins with only a single row of median vein scales, no lateral scales. 



Genitalia with small narrow basal lobes; claspers as long as the lobes, simple, with a 

 dark terminal spine. 



Length, 5 mm. 



$ Head very similar to the f, but the scales not quite so pale and the few scanty 

 dark fork-scales spreading more over the occiput ; three black chaHse only on each side 

 on the ocular line ; proboscis ochreous in the middle, dark at base and apex, with 

 numerous short pale hairs; palpi about one-fourth the length of the proboscis, brown, 

 with short fine hairs. Antennae brown, pilose. 



Thorax black with narrow-curved bronzy-black scales ; paler behind almost ochreous, 

 but dark brown through the bare space before the scutellum, with dull golden 

 curved scales around it and dark ones at the sides, the golden scales broader than the 

 dark ; chsette long, black in the middle and in front, golden over the roots of the 

 wings ; scutellum ochreous, darker on mid lobe, scales narrow-curved (?) ; six golden- 

 brow-n posterior border-bristles, three on each side of the mid lobe ; metanotum ochreous 

 dark in the middle ; pleurae bright ochreous with grey sheen and pale hairs, pale golden 

 ones also between the dark mesonotum and pale pleur®. 



Abdomen black with violet reflections and basal lateral yellow spots and many yellow- 

 scales on the apical segment, posterior border-bristles pale golden ; venter pale, dull 

 ochreous. 



Legs as in the J, but the femora paler, almost ochreous in the hind legs, fore femora 

 spinose and all the tibiie ; ungues equal and simple. 



Wings with median vein scales only to most of the veins, if lateral ones of pyriform 

 shape ; fork-cells small, the first about the same length as the second and narrower, its 

 base near the apex of the wing, its stem a little longer than the cell ; stem of the second 

 about the same length as the cell ; mid cross-vein longer than the supernumerary, posterior 

 about the same length as the mid, not quite its own length distant from it. 



Length, 4-5 mm. 



ifafeiiaf.— Near Gebel Ahmed Aga and Bor, Sudan (H. H. King) 



Time of capture.— Ma.}' 2 and 20 and June 20, 1909 



(triihhama willcocksii, Theobald Grabhamn 



wilkockui 

 Mum. Cidicid. IV., p. 296 (1907) 



Thorax clothed with bright golden-brown and ochreous or creamy scales; in the 

 middle there are two lines of a pale creamy hue ; pleurae pale with grey scales. Abdomen 

 mostly pale scaled, but with two more or less distinct dark areas on each segment. 

 Legs with apical and basal pale bands; all ungues are equal and uniserrate in the $. 

 Wings mostly pale scaled, a few scattered dusky ones, but variable. Ungues of male, 

 fore and mid unequal and uniserrate ; hind equal and simple. 



$ Head deep brown, clothed witli pale creamy narrow-curved scales and pale creamy 

 upright forked scales on the occiput, becoming bright ochreous laterally, and a few deep 

 black ones behind on each side, flat creamy and dusky lateral scales. Palpi mottled 



