SIMPLICIA.—MAMERTHES. 449 
Hab. Panama, Chiriqui (Ridbe, in mus. Staudinger). 
Dr. Staudinger’s specimens are all we have seen of this species, of which we figure 
both sexes. 
NARCZEA, gen. nov. 
Male, Head and thorax rather broad; the abdomen slender and only extending very slightly beyond the 
wings. Eyes large. Tegule long, extending over the base of the abdomen, and clothed with long hairs. 
Palpi large, curved backwards over the head and thorax, thickly clothed with hairs. Antenne simple, 
about half the length of the primaries. Fore legs stout, very thickly tufted with long hairs; the middle 
and hind legs long and slender, with the spurs elongate. The primaries are rather long and narrow at 
the base ; the costal margin is nearly straight, but slightly curved near the apex, which is pointed ; the 
outer margin is rounded to the anal angle; the inner margin is quite straight ; the discoidal cell is small 
and rather short; on the underside of the wing on the costal margin close to the base is a tuft of hair. 
The secondaries are rather large ; the costal margin is arched about the middle, then straight to the apex ; 
the outer margin is rounded to the anal angle; the inner margin is straight and clothed with rather 
long hairs. The fringe of both wings is short. 
In the female the primaries are a little shorter and broader ; the first joint of the palpi is quite small, the 
second long and rather broad, the third long and very fine, and curved backwards over the head; the 
antenne are rather finer; and the legs are shorter, the front pair not tufted with hair. 
Type Narcea villosa. 
In this new genus the male has an exceedingly large tuft of hair on the fore legs, 
and long and hairy palpi; these characters separating it from the allied forms. 
1. Narceea villosa, sp. n. (Tab. XXXVI. figg. 21, 21a, 3; 24, 9.) 
Male. Primaries dull brown, slightly darker along the costal margin, with a rather large dark brown spot at 
the end of the cell, a waved pale brown line crossing the wing near the base, a straight pale brown line 
crossing beyond the middle from the costal to the inner margin, and a fine waved submarginal line 
extending from the costal margin close to the apex to the anal angle, the fringe brown ; the secondaries 
similar in colour, but rather paler on the costal margin, with a pale brown line extending partly across 
the wing from the inner margin above the anal angle, and a pale waved submarginal line; both wings 
with a number of very small black points round the outer margin; the underside considerably paler than 
above, and almost without markings of any kind: head, thorax, and abdomen similar in colour to the 
primaries, the anal tuft pale brown; the palpi, the tufts of hair on the legs, and the legs themselves pale 
brown, with a slight yellowish tinge; the antenne brown. The female very like the male, but with the 
lines crossing the wings much more waved; also with very differently formed palpi and fore legs. 
Expanse, ¢ 24, Q 24 inches. ; 
Hab. Panama, Chiriqui (Ribbe, in mus. Staudinger). 
The only specimens we have seen of this species were kindly lent to us by Dr. 
Staudinger to describe and figure. 
MAMERTHES, gen. nov. 
Male. Head and thorax small; the abdomen slender, not extending beyond the wings. Eyes moderately 
large. Tegule short, not reaching the base of the abdomen. Palpi long, curved over the head and 
thorax; the first joint short and rather stout; the second joint long and slender, thickly clothed with 
short hairs ; the third joint moderately long and forming a sort of sheath for a long tuft of fine hair. 
Antenne about half the length of the primaries, rather thick, and slightly ciliated. Fore legs mode- 
rately stout and pilose ; the middle and hind legs long and slender, the spurs on the hind pair elongate. 
BIOL. CENTR.-AMER., Heter., Vol. I., May 1891. 3 il 
