452, HETEROCERA. 
with a large tuft of hair on the inner side. The fore legs long, the tibize thickly clothed with hairs, the 
tarsi very slender ; the hind legs long, extending slightly beyond the wings, and very thickly clothed with 
long silky hairs almost to the claws, the spurs very long. The primaries long and rather narrow ; 
the costal margin slightly concave about the middle; the apex rounded; the outer margin nearly 
straight to beyond the middle, then much rounded to the anal angle; the inner margin quite straight. 
The secondaries rather large, and much rounded from the apex to the anal angle; the costal margin 
straight. 
The female very similar to the male, but without any hair on the legs or palpi, excepting a very minute tuft 
just behind the tip of the latter (in other respects the palpi closely resemble those of the females of the 
genus Nicetas). 
Type Strathocles ribbe. 
1. Strathocles ribbei, sp. n. (Tab. XXXVII. figg. 7, 7a, 3; 8, 2.) 
Male. Primaries and secondaries almost uniformly dull brown; the primaries with a lighter brown mark at 
the end of the cell, beyond which are two rather large blackish-brown spots joined together by a slightly 
waved line, the marginal line black; the secondaries with a very faint submarginal pale brown line 
extending from the costal margin slightly above the apex to the inner margin above the anal angle; the 
underside pale greyish-brown, that of the primaries darker near the apex, both wings crossed beyond the 
middle by two very faint brown waved lines: head, thorax, and abdomen dark brown; the fore legs, 
antenne, and palpi paler brown, the tuft of hairs on the palpi and the hairs on the hind legs pale 
yellowish-brown. The female slightly darker in colour than the male, and altogether a smaller insect ; 
its other differences are pointed out in the generic description. Expanse, ¢ 25, 2 13 inch. 
Hab. Mexico, Teapa in ‘Tabasco (H. H. Smith); Panama, Chiriqui (Arcé, in mus. D. ; 
Ribbe, in mus. Staudinger), Volcan de Chiriqui 3000 to 4000 feet (Champion). 
I have named this species after Herr Ribbe, who has discovered so many curious 
species of Deltoide. Our figure of the male is taken from Dr. Staudinger’s specimen, 
that of the female from one in our own collection, both of which were captured by 
Herr Ribbe. The Mexican specimen is the darkest; it was captured in February 
1888. 
2. Strathocles imitata, sp.n. (Tab. XX XVII. fig. 9, 2.) 
Female. Primaries pinkish-brown, crossed about the middle from the costal to the inner margin by a wide 
dark brown band, this band being edged on both sides by a narrow black waved line, and becoming 
narrower and darker towards the inner margin, the outer margin shaded with dark brown, a large black 
spot at the end of the cell, and a very indistinct submarginal waved pale brown line extending from the 
costal margin near the apex to the inner margin above the anal angle, the marginal line yellowish-brown 
with black points, the fringe brown; secondaries dull brown, paler on the costal margin, partly crossed 
from the anal angle by two pale brown lines which do not extend more than halfway across the wing, 
and with a marginal line as on the primaries; the underside greyish-brown, that of the primaries with a 
yellowish tinge along the costal margin, both wings crossed: by two pale yellowish-brown lines: head, 
palpi, thorax, and antenne pale brown, the abdomen dusky brown, the legs brown. Expanse 2 inches. 
Hab. Panama, Chiriqui (Ribbe, in mus. Staudinger), Taboga I. (coll. Dognin). 
Somewhat resembles Nicetas panamensis in the pattern of the primaries, but entirely 
different in colour. The small tuft of hair on the third joint of the palpi at once shows 
that this insect is the female of a species allied to Strathocles ribbet. 
