438 HETEROCERA. 
length of the wing) and rather broad at the end; secondaries large, much rounded from the apex to the 
anal angle, the costal margin almost straight, the fringe very long. Head small ; the thorax and abdomen 
slender, the latter not extending beyond the wings. Palpi large, projecting straight out in front of the 
head, the third joint very minute. Antenne about half the length of the wing, slightly pectinated. Legs 
long and very slender, without any tufts of hair. 
Type Sotigena notodontoides. 
This genus in some respects is allied to Hypena; but it may be at once distinguished 
from all others of the family known to us by the fringed lobe on the inner margin of 
the primaries. The two species referred to it are both from Mexico. 
1. Sotigena notodontoides, sp.n. (Tab. XXXV. fig. 22.) 
Primaries pale greyish-brown, thickly irrorated with minute darker brown scales, a small raised tuft of white 
scales in the middle of the cell, a waved green line edged with brown on the outer side crossing the 
wing at the end of the cell from the costal to the inner margin, beyond which, nearer the apex, is a sub- 
marginal row of five indistinct black dots, the marginal line black with a few pale brown points on the 
inner edge, the fringe dark brown ; secondaries creamy- white, slightly shaded with brown about the middle 
of the outer margin, the marginal line black, the fringe brownish-white ; the underside of the primaries 
dusky brown, darkest at the apex and along the costal margin, that of tho secondaries the same colour as 
above, with a central brown line almost broken into spots crossing the wing from the costal to the inner 
margin: head, thorax, palpi, and antenne dark brown; the abdomen yellowish-brown, with a narrow 
dark brown line extending from the base to the anus; the legs brown. Expanse 14 inch. 
Hab. Muxico, Coatepec (Brooks), Las Vigas (coll. Schaus). 
Mr. Schaus informs us that he captured several specimens of this insect during the 
month of May. Our example from Coatepec has the green line crossing the primaries 
more distinct than in the others we have seen from Las Vigas. 
2. Sotigena dulcis, sp.n. (Tab. XXXV. fig. 23.) 
Primaries pale greyish-brown, clouded with darker brown along the costal margin and at the end of the cell, 
and slightly irrorated with dark brown scales, with a number of minute brown streaks along the costal 
margin, and a submarginal row of small black spots crossing the wing from the costal margin near the 
apex to the inner margin, the fringe yellowish-brown ; secondaries pale greyish-brown, palest at the base 
and along the costal margin; the underside pale greyish-brown, the secondaries crossed in the middle 
from the costal to the inner margin by an indistinct pale line: head, antennew, palpi, thorax, abdomen, 
and legs pale greyish-brown, the basal segments of the abdomen with a tuft of hairs. Expanse 1} inch. 
Hab. Mexico, Las Vigas (coll. Schaus). 
One specimen of this distinct species was captured by Mr. Schaus, who has kindly 
placed it at our disposal to describe and figure. 
BOANA. 
Boana, Walker, Trans. Ent. Soc. Lond. 8rd ser. i. p. 110 (1862) ; Walker, Cat. xxxiv. p. 1145. 
Walker founded this genus upon a female example of a Brazilian insect; but the 
species had been figured long before by Herrich-Schaffer under the name of Hypena 
cataleuca. Boana is very distinct from Hypena, and I have, therefore, retained 
Walker's generic name. The primaries in the male are thickly clothed with long 
