﻿138 CLEMENS' SYNOPSIS OF 



PERIGONIA, Boisd. 



Body broad, slightly fusiform. Head obtuse. Proboscis rather short. Palpi very 

 short and stout. Antennae setaceous, slender, a little longer than the thorax. 

 Abdomen much longer than the thorax. Legs rather slender ; hind tibiae with four 

 moderately long spurs. Wings opaque, moderately broad. Fore wings hardly 

 convex toward the tip of the costa, rather oblique along the exterior border, which is 

 slightly angular in the middle and behind the tip ; fourth inferior vein (posterior) 

 remote from the others. Hind wings very slightly denticulate along the exterior 

 border. Male. — Antennae minutely serrate setose. Female. — Antennae simple. — 

 Walker. 



15. P. LusCA. — Sphinx Lusca Fair. Sp. Ins. II. 140, 5 ; Mant. Ins. II. 92, 5 ; Ent. Syst. III. 1, 356, 6. 



Gmel. Syst. Nat. I. 5, 2372, 51. Perigonia stulta Boisd. Herr. Sch. Lep. Exot. Sp., Nov. Ser. 1. 

 Perigonia Lusca Walker, p. 101. 

 Ferruginous brown, somewhat cinereous and testaceous beneath. Fore wings with three grayish, diffuse 

 bands and transverse blackish lines. Posterior wings with variable luteous bands and streaks along the 

 interior angle. 



Geographical distribution. — Mexico, South America, West Indies. 



Group II. 

 Fore wings not angular in the middle of the exterior border, and are excavated 

 behind the sub-apical angle. The exterior border of hind wings convex and not 

 denticulated. Head conical. 



16. P. subhamata Walker, p. 102. 



Brown (male) or ferruginous (female), paler beneath. Wings with oblique, undulating, pale ferruginous 

 bands, which are most numerous on the fore wings, and the latter have a discal dot of the same hue, and a 

 cinereous subapical spot. Length of the body 13 — 15 lines ; of the wings 28 — -32. 



Geographical distribution. — Mexico and South America. 



Group III. 



Head rounded in front, not conical. Fore wings somewhat rounded at the tips, 

 slightly convex and not excavated along the exterior border, which is very oblique. 



17. P. glaucescens Walker, p. 103. 



Brown, testaceous beneath. Head with a white streak on each side behind the eye. Antennas tawney, 

 very slender, not longer than thorax. Thorax slightly tinged with green. Abdomen ferruginous, slightly 

 glaucous; fifth segment whitish; sixth and seventh segment with a whitish tuft on each side; apical tuft 

 blackish. Wings reddish beneath. Fore wings with a glaucous tinge, and with two oblique bands, the 

 one dark brown and interior, the other ferruginous and exterior, and bordered with dark brown on its 

 outer side. Hind wings dark brown, with a luteous spot by the interior angle, and a white speck near 

 the base of the interior border. Length of the body 12 lines; of the wings 28 lines. 



18. P. undata Walker, p. 103. 



Brown. Head beneath and pectus somewhat hoary. Thorax with a short, broad, posterior, dark brown 

 stripe on each side. (Abdomen and hind wings wanting.) Fore wings cinereous, shining, with a white 



