OUOOSTIGMA. 177 



below the cell, at wliicli point the fulvous colour is diffused over tlic disk ; the apical and anal 

 areas pale, with numerous fine dark brown striated lines ; a lunulatc submarginal fulvous line 

 with black marks in the lunulations, bent out to the margin at the radial ; a fine marginal 

 black line. A black line through the fuscous cilia of both wings, interrupted on each side of 

 the radial of the liind wing, at wliich point tlie cilia become white at base, with a black dot 

 at the termination of the radial. 



Oligostigma picale. (Plate CLXXn\ fig. 23.) 

 Hjdrocampa picalis, Guai. Ddt. et Piir. p. 274. 



Expanse f inch. 



Male. Smoky black ; abdomen ringed with white. Fore wing with a black speck at 

 base ; traces of ante- and postmedial oblique lines ; an indistinct triangular postmedial patch 

 on the costa outlined with fulvous ; a large white apical patch continued towards outer angle 

 as a line, and followed by black and fulvous lines and a double black line on margin. Hind 

 wing with the base and outer area blackish ; a broad medial white baud ; a curved fulvous 

 postmedial line ; double marginal black lines represented at the angle below apex by some 

 black spots and two white specks. 



Oligostigma dianale. (Plate CLXXIV. fig. 27.) 



Expanse i inch. 



Male. Vertex of head whitish ; pro- and mctathorax pure white ; mesothorax fuscous ; 

 abdomen yellow, the terminal segments white. Fore wing with the inner and discal areas 

 rich brown suffused with white scales, with an elongate white patch on the middle of the 

 inner margin ; the costa, apical, and outer areas bright orange-yellow, with a black spot on 

 the costa above the end of the cell ; a white band across the end of the cell; a subniargiiial 

 white baud outwardly edged with black ; a series of marginal black spots ; cilia fuscous, the 

 bases black at apex. Hind wing with the base brown, followed by a broad inwardly oblique 

 white band; tlie outer area brown at middle; tlic aual and apical areas yellow; a subapieal 

 white spot ; three black spots on the subapieal lobe of the outer margin ; cilia metallic silvery 

 towai'ds the apex, grey towards the anal angle. 



Oligostigma fuscifusale. (Plate CLXXIV. fig. 28.) 

 Expanse ^ inch. 



Male. Head, thorax, and abdomen brownish ochreous. Fore wing brownish ochreous suf- 

 fused with darker brown ; a submarffinal black line slightly inwardly edged with white ; a 

 marginal black line and a black line through the cilia. Hind wing brown ; a paler indistinct 

 medial band ; a black submarginal line inwardly edged with white ; a marginal black line 

 double at the apex, interrupted and replaced by white at the emargination, a single black 

 spot at the end of the subapieal lobe. 



2a 



