292 THE ENTOMOLOGIST. 



appearance of the wing places it in this group rather than in 

 that of cristana. 



[BentUyana, Curt.] 



Semistriana, Desv. — An extremely rare form akin to semi- 

 ustana, but with distinctly striated grey inner margin. 



(To be continued.) 



NEW AFEICAN GEOMETEID^. 

 By Louis B. Prout, F.E.S. 



Subfam. Acidaliin^. 

 Mnesithetis omithosp'ila, sp. n. 



5 , 22 mm. Face and palpus reddish. Fore coxa and femur 

 marked with red above. Thorax above concolorous with wings. 

 Wings pale olive-green, lines darker olive. Fore wing with faint 

 curved antemedian at just before one-third, distinct postmedian at 

 beyond two-thirds, not at all denticulate, sinuate inwards below u^ ; 

 cell-mark elongate, dark olive ; terminal line httle darker than 

 ground colour, followed by a pale line at base of fringe ; fringe long, 

 concolorous with wing, slightly paler in distal half. Hind wing 

 without the antemedian line, cell-mark white, not broken up into 

 two spots, but forming an angulated mark nearly as in the Hemitheine 

 genus Ornitliospila. Under side ochi'eous whitish strongly flushed 

 with flesh-pink ; both wings with very faint traces of the postmedian 

 line, otherwise unmarked. 



Bitye, Ja River, Cameroons. Type in coll. L. B. Prout. 



Differs from typical Mnesithetis in having sc^ of fore wing 

 arising from the ceil instead of from the stalk of sc^-o. Will 

 form a new section, if not a new genus. 



Acidalia fuscifusa, sp. n. 

 5 , 26 mm. Face fuscous. Palpus brown, tipped with fuscous. 

 Legs light brown, fore leg fuscous on inner side. Thorax fuscous 

 dorsally. Fore wing light brown ; basal half (to median shade) 

 irrorated and irregularly clouded with fuscous, especially towards 

 inner margin ; antemedian line obliterated ; median shade diffuse, 

 curved (parallel with termen), passing just outside the discal dot ; 

 postmedian line dark fuscous, denticulate on the veins, from three- 

 fourths costa, slightly obhque outwards to r\ there sharply angled, 

 incurved between r^ and r^ ; terminal area fuscous, excepting a patch 

 at costa, the edge of the fuscous shade sloping away from r^ to just 

 below apex ; discal dot small, black ; terminal line blackish, inter- 

 rupted at the vein-ends. Hind wing elbowed at r^ ; similar to fore 

 wing, the median shade proximal to the cell-spot, postmedian less 

 sharply angled at r^ Under side of fore wing similar to upper but 

 less strongly mixed with fuscous ; of hind wing free from fuscous 

 admixture only, the hnes and cell-spot present. 



