250 
AJp^Louis B. Prout on the 
Br. Mus.; Tucuraan and Los Vasquez, in coll. Dognin; 
Corrientes and near Florenzia, in coll. Br. Mus. 
Not yet recorded outside tlie confines of the Argentine 
Republic. 
91. OcHYRiA ARGENTINA (Berg, MS.) (Pi’out), nov. sp. 
(Plate XLVIII, fig. 4). 
d $. 20-23 mm. Face rather strongly protuberant; palpus 
moderate, rather long-haired beneath, 3rd joint moderate, more 
shortly rough-scaled ; tongue present; antenna in d strongly 
dentate, with fascicles of cilia, in 9 filiform. Abdomen short. 
Forewing triangular, costa little arched, distal margin entire, slightly 
convex, oblique (especially in the 9 )> longer than inner margin ; 
areole double, the anastomosis of SC^ with SC^'^ very brief, SC® 
separating from SC'* shortly after SC®; hindwing rather narrow 
(especially in the 9 ), costa long, distal margin entire, angles some¬ 
what rounded off, cell less than one-half, discocellulars strongly 
oblique, nearly straight or faintly bisinuate, not angled, R® central. 
Forewing brown-grey (whitish densely irrorated with brown), 
slightly tinged with fleshy ochreous, the usual Larentiid pattern 
clearly marked out by whitish transverse lines; boundary of basal 
area before one-fifth, forming an angle outwards in cell ; antemedian 
whitish line from beyond one-third costa, gently curved or bent ; 
postmedian at about two-thirds, incurved distally to cell, and more 
weakly in lower half of wing, forming a rather strong projection at 
R®; subterminal whitish, dentate, especially distinct at costa, placed 
on a rather .strongly brown marginal area, which is usually darkest 
proximally to the subterminal, and especially over against cell and 
towards inner margin ; median area darkest proximally and distally, 
its proximal margin spotted with dark fuscous at costa, M, and 
inner margin, its distal margin dark-spotted on veins, and dark- 
marked from R* to R®; terminal line dark fuscous, somewhat 
variable, usually more or less interrupted at the vein-ends ; fringe 
long, dark-chequered at vein-ends, proximal half somewhat darker 
than distal. Hindwing brownish grey, usually with weakly paler 
l)ostmedian line (course as in forewing), and subterminal; terminal 
line as in forewing. Under-side somewhat richer sandy brown, 
forewing with antemedian and postmedian as above, but weaker 
(sometimes, as in the type specimen, indicated only by dark costal 
spots), and a weakly pale subterminal, preceded by a band of darker 
tone tliiin the ground-colour; hindwing beneath dusted with fuscous, 
and with the postmedian line distinct, being dark-shaded proximally. 
