DESCRIPTION OF THE GENERA AND SPECIES. 



Subfamily I. LARENTIN^ Packard. 



Eubolidi aud Cidaridi (in part), Chesiadi, MelantMdi (in part), Stepb., List Lep. 15r. Mns , 18:!, 169, '20G, 



213, I860. 

 J.im ntidir Gueuee (in part), Phal., ii, 257, 1857. 



Head large, rather long, and free from the thorax ; front usually full 

 and convex, either narrow or broad and subtriangular, usually with a frontal 

 interpalpal tuft. Palpi usually large and stout, with the third joint quite long 

 and pointed, held beak-like in front of the head ; but, in the higher genera, 

 they often become short, not extending far beyond the front (very rarely, 

 however, not extending to the front), with the third joint scarcely distinguish- 

 able at its base from the projecting hairs of the end of the second joint. 

 Antenna? usually ciliated, very rarely with short and slender pectinations. 

 Wings usually large, particularly the hinder pair; the fore wings often sub- 

 falcate, with the costa full, sinuous, outer edge seldom ^lightly bent ; hind 

 wings usually large and rounded, with the inner edge long, or, in some of the 

 higher and more aberrant genera, smaller than usual, short or oval, but never 

 aborted; in one genus (Lobopkora), with a swelling or blister near the base 

 of the inner edge ; in two genera (Scotosia and Hydria), with an ear-like 

 expansion of the edge and brush-like crest of hairs. Venation: one, usually 

 two, subcostal cells; first subcostal venule usually long, but sometimes 

 scarcely longer than the second and third; independent vein situated in the 

 middle of the discal space; posterior discal venule usually oblique and much 

 bent. Abdomen usually long and slender; more or less .tufted on the side 

 and back, or rather stout, sometimes extending beyond the hind wings. 

 Fore legs long and slender, unarmed, in one genus (Lithostege), with the 

 tibiae short and thick, hind legs long, with the tarsi usually about as long as 

 the tibia?; in one genus (Haliommata), thickened, and tarsi only half as long 

 as the tibia?. 



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