338 Mr. G. T. Bethime-Baker's 



lustrous blue; a series of four small postmedian spots that are 

 larger in the secondaries and are inclined to be obsolescent (I have 

 one sjaecimen in which all these spots are absent). In the secondaries 

 the terminal area is whitish with a terminal row of brown spots. 

 Underside like the male, but with the pattern accentuated. 

 Expanse, cj 38-40 ; ? 42-44 mm. 



Hab. Nairobi District, February, May and June; 

 Laitokitok (Jackson), May. 



Types in my collection. A long series. 



N. negus Felder has no tails; I regard this species as 

 the tailed form of that insect, though the pattern below 

 is much larger and not exactly similar; the two species 

 are nevertheless nearly allied. The great majority of my 

 specimens have five black spots below in the basal area 

 of the secondaries; a few have only four, as in negus, 

 but otherwise the pattern is like the species just described. 



Genitalia. Harpagines very long and narrow, wider at the base, 

 tapering slowly into a long narrow arm-like process with a shortly 

 spatulate extremity [in the type specimen the extremities are 

 asymmetrical, the one apex ending in a point, the other being 

 spatulate; this asymmetry is frequent, almost totalling to 50% 

 of the specimens mounted. I have disEccted eighteen examples, 

 but several had the apices broken off, so it is difficult to give the 

 exact percentage]; the bristles are long and fine; the anellus has 

 a roughly cone-shaped front margin; the aedoeagus is narrow and 

 moderately long; the cingulum is of moderate length and rather 

 narrow; the tegumen being merely a narrow raised ridge at the 

 rear of the cheeks, which are of small dimensions, being almost 

 wedge-shaped and projected ^^■e\\ forward, with longish fine bristles 

 and long falces of moderate width terminating in a short strong 

 hooked apex. 



Androconia variabk^, oblong to roundish, attachment stalk long, 

 placed centrallj^ oblong scales Avith the distal extremity on a very 

 slight curve, roundish scales well curved distally; proximally the 

 oblong scales are slightly truncate, but the round ones keep their 

 rotundity; nine to ten rows of reticulations placed fairly closely, 

 the sculpturing vertically being moderately close also. 



Neochrysops variegata sp. n. Plates XII, fig. 8; XXIT, 

 fig. 46 ; XXX, fig. 46. 



cJ. Upperside, both wings sublustrous violet blue. Pi iniaries ; 

 termen rather narrowly brown, a largish spot closes the cell. Second- 

 aries with the termen narrowly brown, a subterminal row of spots 



