62 A. WATSON 



Negera bimaculata (Holland) comb. n. 



(Text-figs. 95-98 ; PI. 6, figs. 291, 292 ; Map 3) 



Ancistrota bimaculata Holland, 1893 : 177. 



Ancistrina bimaculata (Holland) ; Gaede in Seitz, 1927 b : 289. [Poor fig.] 



Ancistrina bimaculata (Holland) ; Gaede 1931 : 50. 



Ancistrina immaculata Gaede, in Seitz, 1927 b : 289. [Inaccurate fig.] syn. n. 



Ancistrina immaculata Gaede ; Gaede, 1931 : 50. 



Description, q*. Terminal segment of palp buff ; outer surface of remainder of palp scarlet, 

 inner surface buff. Front of head scarlet, orange, or brownish scarlet ; vertex buff or brownish 

 buff. Upper surface of antennal shaft yellow, with some scarlet scales on scape and pedicel. 



Dorsal surface of thorax buff, much paler at anterior margin with some scarlet scales ; ventral 

 surface pale buff, but scarlet or brownish scarlet immediately ventral and lateral to eyes. Front 

 surface of whole of fore legs and tibia and tarsus of remaining legs orange-scarlet, inner surface 

 buff. Costa of fore wing strongly convex distally ; apex weakly falcate ; outer margin straight 

 or slightly concave (Plate 6, fig. 291) ; upper surface buff or greyish buff ; with paler, lustrous, 

 medial area in some specimens ; tornus darker, with numerous dark brown or black striations 

 parallel to outer margin ; numerous brown striations at right-angles to postmedial fascia between 

 this fascia and base of wing, most conspicuous in anterior half of wing ; discocellular spot black ; 

 postmedial fascia dull brownish red laterally, with longitudinal central lustrous band ; costal 

 spots faintly marked except at apex ; large, reddish brown spot posterior to cell between Cu^ 

 and 1A in some specimens ; trace of pale, subterminal, neural spots. Ground-colour of upper 

 surface of hind wing buff or greyish buff, darkest between medial fascia and weakly marked 

 sub-basal fascia ; speckled with brown distal to medial fascia, most strongly at outer angle ; 

 wing lustrous in broad band distal to medial fascia in some specimens ; discocellular spot black ; 

 colour of medial fascia as for postmedial of fore wing ; trace of pale, subterminal, neural dashes 

 in some specimens. Under surface of fore wing scarlet-orange along costa and posterior to cell, 

 intermediate area orange, all lightly speckled with red or brown ; discocellular spot black ; 

 weakly marked postmedial fascia scarlet-orange or greyish scarlet. Under surface of hind wing 

 scarlet-orange along costa, anal margin and at anal angle, lightly speckled with scarlet or 

 reddish brown ; discocellular spot black ; fasciae absent. 



Colour of dorsal surface of abdomen doubtful, but probably as for upper surface of ground- 

 colour of wings; reddish brown along medial line of one specimen from Gabon. Ventral surface 

 buff, with scarlet posterior margin to each segment. 



o* genitalia (Text-figs. 95-97) : valve with short central process and long, acuminate, anterior 

 process ; medial part of gnathus undivided ; uncus weakly bifurcate ; aedeagus with curious, 

 flat process at base on side opposite caecum penis ; apex of aedeagus with group of stout spines ; 

 vesica scobinate ; posterior processes of eighth tergum widely separated ; eighth sternum as in 

 figure. 



$ (Plate 6, fig. 292) . Similar to male but with following differences : apex of fore wing strongly 

 falcate ; outer margin and postmedial fascia of fore wing strongly convex ; colour of upper 

 surface darker — reddish or greyish brown ; subterminal markings more clearly marked ; (tornus 

 and most of medial area on fore wing and whole of area distal to medial fascia conspicuously 

 lustrous in one example from Liberia) ; ground-colour of under surface of fore wing scarlet- 

 orange except for yellow costal streak near apex and narrow, marginal, yellow area between M 2 

 and Cu la ; ground-colour of under surface of hind wing scarlet orange, but yellow in cell and 

 along outer margin between Rs and Cu la , and pale grey between C« la and anal angle. 



$ genitalia (Text-fig. 98) : bursa copulatrix with simple signum ; ductus bursae sclerotized 

 and sharply bent posteriorly ; ninth segment hood-like dorsally. 



Measurements. A.P.R. : $. 17 ; ?. 10. Wing : 3. 25-0, 23-0-26-5 mm. (8) ; ?. 

 27-0, 24-5-29-5 mm. (5). 



Discussion. The males of this species can be separated from the rest of the genus 

 by the straight outer margin of the fore wing and the promixity to it of the post- 



