﻿128 CLEMENS' SYNOPSIS OF 



f Angulated and denticulated. 



X Tongue nearly as long as the uody. 

 134. Thyreus, Group I. Abdomen with apical tuft ; head broad and obtuse ; eyes small. 

 If Angulated in the middle. 



XX Abdomen with apical tuft. 

 139. Enyo. — Antennae subfusiforrn, short, with angular hook; tongue equal to 3d abdominal ring. 

 138. Perigonia. — Antennae slender, setaceous ; tongue rather short ; head obtuse ; palpi short. 



XXX Abdomen without apical tuft, or scarcely tufted. 

 142. Calliomma, Group V. — Fore wings with silvery lines (in note). 

 180. Smerinthus (in part). — Tongue about as long as palpi. 



137. Deidamia. — Tongue two-thirds as long as body; body fusiform. 



fft Not angulated in the middle. 



138. Perigonia. — Group II. 



4° Fore wings denticulated 

 f Without silvery streaks. 

 180. Smerinthus. — Tongue about as long as palpi or almost obsolete. 



ft With silvery streads and angulated. 

 142. Calliomma,— Group IV. 



SESIA, Fair. 



The body is pilose, stout and more or less oval or elliptical in outline, in 

 the 9, but more elongate and slender in the male. The thorax is advanced 

 and tapers anteriorly to the head, which is small, but free and prominent, with 

 the front broad ; the eyes are very small ; the palpi exceed the front and ter- 

 minate acutely in a pencil of hairs ; the tongue when unrolled extends to about the 

 5th abdominal segment ; the antennae are longer than the thorax, slender at the base, 

 clavate and furnished with a minute seta at the extremity. The abdomen is tufted 

 at the extremity, and about twice as long as the thorax. The wings are transparent 

 in the middle ; the fore wings with the hind margin entire, oblicmely convex, and 

 the inner margin concave beyond the inner angle ; hind wings somewhat acuminated 

 at the tip and short. The legs are slender and the hind tibia? with four moderate 

 spurs. Male, antenna? finely ciliferous. Female, nearly simple. 



The Larva, tapers anteriorly, has a dorsal and stigmatal stripe, and a short 

 recurved horn. It undergoes its transformation in an imperfect cocoon on the surface 

 of the ground. 



SPECIES. 



1. Diffinis. — Thorax pale greenish yellow; abdomen beneath black, legs hhielc. 



2. Thysbe. — Thorax rather deep, obscure olivaceous; abdomen beneath rufescent, legs iclu'fish. 



3. Fuscicaudis. — Light fawn color; abdomen deep red, with a row of testaceous spots along each side. 

 2. Ruficaudis of Kirby, a variety of Thysbe. 



2. Ruficaudis of Walker, a variety of Thytbe ? 



