OLIGOSTIGMA. 
177 
below the cell, at which point the fulvous colour is diffused over the disk ; the apical and anal 
areas pale, with numerous fine dark brown striated lines ; a lunulate snbmarginal 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 Avings, interrupted on each side of 
the radial of the hind wing, at which point the cilia become white at base, with a black dot 
at the termination of the radial. 
Oligostigma picale. (Plate CLXXIV. fig. 23.) 
Hydrocampa picalis, Guen. Belt, et Pur. 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 band ; 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 \ inch. 
Male. Vertex of head whitish ; pro- and metathorax pure white ; mesothorax fuscous ; 
abdomen yellow, the terminal segments white. Fore wing with the inner and discal areas 
rich brown sufi'used 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 submarginal 
white band 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; the outer area brown at middle; the anal and apical areas yellow; a subapical 
white spot ; three black spots on the subapical lobe of the outer margin ; cilia metallic silvery 
towards the apex, grey towards the anal angle. 
Oligostigma fuscifusale. (Plate CLXXIV. fig. 28.) 
Expanse i inch. 
Male. Head, thorax, and abdomen brownish ochreous. Fore wing brownish ochreous suf- 
fused with darker brown; a submarginal 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, interru])ted and replaced by white at the emargination, a single black 
spot at the end of the subapical lobe. 
2 A 
