266 Annals of the South African Museum. 



b^. Forewing without pale streaks on the veins of medial 



area mesoglauca. 



61. Forewing with the medial area not paler than the ground colour. 

 a^. Forewing very dark red-brown with pale patch on 



inner area before tornus dipterigidia. 



Ifi. Forewing without pale patch on inner area before tornus. 

 a^. Forewing with the ground colour brown or grey-brown, 

 a*. Forewing with the subterminal line dentate at middle. 

 «s. Forewing with pale dentate line before the 



irregular blackish terminal band .. .. renisigna. 

 b^. Forewing without pale line before the blackish 

 terminal band. 



a". Forewing with the costal half of post- 

 medial line not dentate consanguis. 



b'^. Forewing with the costal half of post- 

 medial line dentate definiens. 



&■'. Forewing with the subterminal line not dentate 



at middle . , furvilinea. 



b^. Forewing whitish tinged with olive-brown and 



irrorated with black natalensis. 



b. Forewing with the ground colour white tinged with grey- 

 green . . . . poliastis. 



(1) Mamestra vittigkea, n. sp. 



(J . Head and thorax dark red-brown and purplish fuscous ; 

 abdomen reddish brown. Forewing purplish grey ; a pale subbasal 

 line defined by black between median nervure and vein 1 ; the 

 antemedial line brownish defined by black lines, slightly curved and 

 with the large black claviform stigma on its outer edge ; the medial 

 area pinkish ; the orbicular and reniform whitish, the former minute, 

 the latter large attenuate, its centre defined by brownish lines and 

 with some black in the cell before it ; a whitish fascia on middle of 

 inner area and a paler streak on basal part of vein 2 ; the postmedial 

 line formed of minute pale and black lunules, strongly bent outwards 

 below costa ; a subterminal series of black and ochreous dentate 

 spots ; the termen brown with whitish apical patch. Hindwing 

 white, the costal area tinged with brown ; a fine brown terminal line. 



? . Hindwing fuscous. 



The specimen from British East Africa has a prominent white 

 fascia on terminal part of median nervure and base of vein 2. 



Hab. British East Africa, Athi-ya-Mawe (Betton) ; Natal, Victoria 

 District (Gooch), Northdeue. Exp. 30-34 mill. Type in B.M. 



(2) Mamestra speyeri, Feld. Keis. Nov. pi. 110, f. 15 (1874). 



Hab. Natal, Estcourt (Hutchinson), Durban (Leigh) ; Cape 

 Colony, Queenstown. Exp. 40 mill. 



