ME310IES OF THE is^^ATIONAL ACADEMY OF SCIEI^CES. 
221 
scales. Eyes naked. xVnteuuai ^ell pectinated on the basal two-thirds, beyond filiform; the 
branches more or less ciliated; the joints above not densely scaled. Palpi mnch larger and rather 
wider than usual, stout, ascending, reaching a little beyond the front; second joint longer than 
the first and rather longer than usiial; the scales on the upper side shoi’t and dense, below much 
longer and uneven; third joint conical, often rather short, small, not always very distinct, being 
more or less concealed by the long loose hairs of the second joint. 
^laxillm longer than usual and A'ery well developed, forming several coils. Thorax not 
•crested. Fore wings rather less than one-half as long as broad; costa nearly straight or slightly 
convex ; apex somewhat rounded or pointed or (in Itydromeli) scpiarish, (in wnicolor abruifily bent), 
but usually somewhat produced; outer edge long, oblique, convex (in iinicolor sharply bent on 
first cubital venule, III 3 ). Hind wings shorter and more rounded at the apex than in any other 
genus of the family, outer edge shorter, more regularly rounded than usual; costal and inner edge 
of nearly the same length. Wings not tufted. 
Pig. 80. — Venation of Heterocamjici ohliqua; the names of the veins as designated on p, 86; d, 
anteiior; d', posterior discal vein; /, frenulum ; sc, subcostal cell. 
Venatiou much as iu Schiziira, but quite variable; usually a loug narrow subcostal cell, 
though it is sometimes open iu individuals of the same species; the third subcostal venule is very 
short, and the cell between it and the fourth is minute; in the sujyerha and group the 
subcostal venides tend to be bent up at their end toward the costa, and so in «sf«r#eand hhmdata, 
but usually they are diverted more toward the apex, and then more parallel with the costa; the 
discal venules vary in length and direction; the aiiterior one is usually short and diverted 
obliquely inward to where it meets the sixth venule; the hinder discal venule either forms a 
regular curvilinear line, or is broken into two portions forming an angle with the apex, pointing 
inward, from which the median discal fold passes to the base of the wing ; the first cubital vein 
(III3) usually more or less detached at its origin from the second and at the bend throwing ofi* the 
hinder discal venule [d'). 
Hind wings with the venation quite uniform, the first and second subcostal venules separating 
a short distance beyond the origin of the anterior discal venule, the first being a little shorter than 
the second branch (iu man teo the second originates halfway between the first and the independent) ; 
