(394) 



Forewing with fovea. Scaling fiiip and closo, subraotallic. 



Type : Pi/rnostdja oh.-ti^nra spec. nov. 



Tbe genus is allied to Seostega Warr., but that genus has ciliated antennae. 



33. Pycnosteg'a obscura spec. nov. 



Foi-eirinfi : dull dark brown; the only marking visible is the onter line, which 

 is fine and deeper brown, rnnning parallel to hindmargin, twice shaq)ly waved below 

 costa between veins S and 0, then sinuous ; between veins fi and S it passes through 

 a patch of dull pale scales; fringe concolorous; costal edge finely dotted with yellow, 

 cchreons. 



IlhuhriiKj : with the line central, the basal half darker than the outer. 



Underside dull greyish brown ; the fringe dark lirown ; cell-sjiots visil)l('. 



Head, thorax, and abdomen concolorous witji wings ; vertex and shaft of 

 antennae snow-white. 



Expanse of wings : 29 mm. 



1 t? from Degama, Niger River (Dr. Ansorge). 



Subfamily AHKAXINAE. 

 34. Negla tenuiorata "\\'lk. 



Walker's species from Ashanti (also from S. Leone) is comparatively small 

 and white, expanding 40 — 44 mm., with the inner and onter lines composed of 

 small round spots, and with the marginal border of hindwing slight and irregnlar. 



It has been usual to sink imchtlgtiU Uowitz to Walker's species ; bnt I much 

 doubt if this is right : it is at least a good dark local form ; I have a series before 

 me of 13 c?c?, from Canhoca, Angola, collected by Dr. Ansorge, which agree well 

 with Dewitz's figure ; these expand 52 mm., and have the outer two-thirds of the 

 wings mainly black, the wings being crossed by a broad black j)0stniedian fascia 

 (il)literating the outer series of spots, and leaving only a small pale space above 

 inner margin before the dark border. Mabille's melantliiata represents an inter- 

 mediate form, as large as nachtigali, but with almost as mnch white in both 

 wings as in tcnu/oi-atu, bnt the whole ground is yellower, and the series of spots 

 large and round ; the hind wings have a border of large horseshoe-shaiied si)ots 

 between the veins, which is distinctive. 



35. Rhodophthitus procellosa spec. nov. 



ForewiiKj : white, covered with long slender black striae, which towards apex 

 and hind margin become thicker and ijartially conHueut ; fringe l)lackish. 



Iliixlicing: flushed with yellow, with a broad smoky black niarginii.1 bonier, 

 the onter portion of the paler area with some sliort thick stri.-to ; fringe black, 

 along inner margin yellowish. 



Underside the same. 



Face yellowish white below, velvety black above and at sides, with a pale spot 

 beneath each antenna ; shoulders and patagia ochrcons, tipped with rosy ; thorax 

 dark ; abdomen yellow with black spots which become conflnent on basal segments ; 

 antennae black ; legs fuscous ; tinged inside, like the pectus, with rosy. 



Exi)anse of wings : 44 mm. 



1 f? from Samba Acenda, Angola, October 1903 (Dr. Ansorge). 



