WINGS IN CILOSSINA FUSCA. 97 



with short golden pile ; last two joints of front tarsi more or less 

 infuscated at the tips ; last two joints of middle and hind tarsi, 

 except basal half of penultimate joint of middle tarsi, dark brown ; 

 sometimes extreme tips of remaining tarsal joints infuscated ; 

 claws black, russet-brown at base. 



Wings. — Veins pale tawny ; upper portion of anterior trans- 

 verse vein often strongly incrassated, and, together with adjacent 

 portion of fourth vein lying towards base of wing, as well as 

 posterior transverse vein and portion of fourth vein immediately 

 beyond, conspicuously infuscated ; basal portion of the veins from 

 the second to the sixth also darker. Squamse not infuscated, 

 fringed with rather long pale-brown fine silky hair. Halteres 

 yellowish. 



Since Walker's type is a ^ > ^-nd not in the best of condition, 

 the above description has been drawn up from a ^ from Kaporo, 

 1670 ft., near Songwi River, N.W. of Lake Nyasa, British 

 Central Africa Pi'otectorate, 28. ii. 1895 {B. Grawshaij), "Taken 

 on the path at night," and a $ from Witu Forest, 1895 (Sultan 

 of Witu, presented by the late W. S. Godfrey) ; both of these 

 specimens are in the collection of the British Museum, and have 

 been specially labelled. 



In cei-tain specimens, including, as it happens, both the type 

 of the species and also that of GL tabaniformis, Westw., the 

 antej'ior transverse vein is less incrassated above than usual, and, 

 like the adjacent portion of the fourth vein lying towards the 

 base of the wing and the posterior transverse vein, is also not 

 infuscated. In these specimens the wing is usually somewhat 

 darker than in those in which the anterior transverse vein is 

 more strongly developed, while, o%ving to the absence of the 

 infuscations alluded to, it appears of a more uniform brown. 

 There can, however, I think, be no question of a specific difference. 

 The type of Gl. grossa, Bigot, is an unusually dark specimen, with 

 the second joint of the antennpe and the abdominal segments after 

 the second dai'k brown ; the markings on the dorsum of the 

 thorax ai'e also unusually distinct, and the apex of the third 

 joint of the antennae is very prominent. 



It has recently been stated by Stuhlmann [174] that in Gl. 

 fusca, which he calls Gl. tabaniformis, the ocellar bristles on the 

 crown of the head are wanting, and also that in the resting 

 position the wings are slightly tectiform. Neithei' of these state- 



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