( 17 ) 



hindmargin, an additional black blotch running basewards towards end of cell, 

 where it also becomes somewhat liroken np into spots ; fringe black. 



Hindwinga : deeper yellow ; a series of irregular black spots along inner 

 margin, and a broad black marginal border from before apex to anal angle ; fringe 

 black, irregularly mottled with yellowish. 



Underside the same as upper. Head, thorax, and legs black ; face, front of 

 shoulders, and abdomen yellow ; the abdomen with black segmental rings, which on 

 the dorsum towards base become confluent ; antennae black. 



Expanse of wings : 32 mm. 



One ? from Wemi River, Torn, April 21st, 1899 (Dr. Ansorge). 



Subfamily SELIDOSEMINAE. 

 27. Thysanopyga subalba sp. nov. 



(? ? . Foreimngs : greyish red-brown, with numerous short and fine black striae ; 

 the lines obscure, red-brown ; first curved at one-fifth ; second before middle, 

 concave outwards to median vein, then vertical ; outer line at two-thirds, irregularly 

 curved to three-fourths of inner margin ; cell-spot small, black, with greyish white 

 scales round it ; small black marginal dots from apex to middle ; fringe concolorous. 



Binclwings : with two lines only, inner and central ; cell-spot minute, whitish. 



Underside dull chalk-white, finely but thickly dusted with fuscous ; forewings 

 with broad diffusely edged marginal band ; hindwings with the band narrower and 

 nearly obsolete except at apex. Head, thorax, and abdomen all concolorous with 

 wings in both sexes ; antennal shaft black and white. 



The form above described is the least marked, and probably the more common. 

 In two more strongly marked ? ? the ground colour is more reddish ; there are 

 clear traces of a dentate subniarginal line, the teeth of which are in places filled 

 up with darker and edged with paler ; in one of these examples the cell-spot of 

 forewing is large, diamond-shaped, with black edge and grey centre containing 

 a black point, of hindwing snow-white with black ring ; in the other that of 

 forewing is large, snow-white, without edge, of hindwing white and smaller. This 

 variation in the cell-spots is not unusual in allied species. 



Expanse of wings : 30 mm. 



One (?, three j j from the island of S. Thom^, October and November 1899 

 (Mocquerys). 



In the forewiugs vein 11 anastomoses with 12, instead of running free 

 throughout as in Petelia H. S ; I have therefore placed the species in Thysanopyga 

 which otherwise contains only American species. 



The species next described, in the subfamily Eniwminae, seems likewise 

 referable to another American genus Arschropteryx. In this connection it may be 

 mentioned that Dr. Jordan found among the Coleoptera from St. Thome some species 

 imported from America. 



Subfamily ENNOMINAE. 



28. Aeschropteryx (?)ansorgei sp. nov. 



Forewings : yellow, sparsely dusted with blackish atoms, towards the anal angle 

 flushed with rufous ; first line hardly visible, waved, at one-fourth ; outer line very 

 fine, rufous, externally edged with paler, from two-thirds of iiuier margin towards 



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