244 



JAMES WATERSTON. 



black ; the projecting portion of the sheath pale, nearly yellow. Antennae with the 

 scape, except apically, pedicel superiorly, and club black ; the rest white. Fore 

 wings with the veins embrowned, the junction of the marginal and sub marginal nearly 

 hyaline ; behind the submarginal, and narrowly round the apex, at the end of the 

 radius, and indefinitely above the frenulum, hyaline ; hind wings with a dark spot 

 on nervure at base and at hooks. Fore legs (entirely) and hind coxae (except for a 

 small faint dusky spot externally at the base) nearly white ; mid coxae dark, paler 

 apically ; trochanters white. All the tarsi and claws pale, yellowish, the fore pair a 

 little darker ; fore femora nearly white on more than the basal third, followed by a 

 broad, completely transverse smoky band, which ventrally reaches nearly to the 

 apex, but stops dorsally at three-fourths from the base, leaving the apex dorsally 

 clear and nearly white ; fore tibia narrowly pale at the extreme base, but for the 

 most part blackish, paler towards the apex, especially along the edges. Mid femora 

 pale, but a[narrow blackish band from the ventral apical angle slopes upwards to the 

 dorsal edge behind the apex ; on the pale tibia there is a clear basal dorsal spot 

 followed by a narrow band which crosses the joint and extends in a dusky stretch 

 along the dorsal edge. In the hind legs, the knees are narrowly nearly black, the 

 femora dusky and paler at the base, especially ventrally ; the tibia darker medianly, 

 pale towards_the apex, as well as shortly just beyond the base. 



Fig. 4. Hoads of (a) Chiloneurus afer, sp. n., $, front view ; (b) C. cyanonoius, 



sp. n.j $, front view. , 



Head, from in front, distinctly deeper than wide (12 : 11). Eyes large, extending 

 over seven-twelfths of the depth, so broad as nearly to obliterate the frons, which at 

 its narrowest (at a point below one-fourth from the vertejs: to mouth-edge) is less than 

 one- eighteenth of the width of the head ; at the lateral ocelli the orbits are from one- 

 sixth to one-seventh of the width apart, but they converge again in a remarkable 

 manner inferiorly (fig. 4 a). Toruli (7 : 4) wde apart (entirely outside a line drawn 

 from the corner of the clj'peus to the orbit, before the latter diverges outwardly) 

 sloping outwardlv and ventrally, separated from one another above by twice, and 

 below by nearly three times their length, distant from the mouth-edge two-fifths of a 

 diameter ; clj'peal edge straight and narrow, only six-sevenths the length of the 

 torulus. On the vertex and frons downwards to a little above the cl}^eus, above the 



