192 INSECTA. 
/EGocERA, Lat. 
Where the antennz are also destitute of the tuft of scales, but 
evidently thickened in their middle and fusiform; the second joint 
of the inferior palpi is furnished with a bunch of hairs, projecting 
in the form of arostrum. The abdomen terminates in a simple 
point. The wings are tectiform and entirely covered with scales. 
Their metamorphoses are unknown(1). 
The fourth and last section of the Sphinges, that of the Zycx- 
NIDES, is composed of Lepidoptera, in which the antennz, always 
terminated in a point destitute of a tuft, are sometimes simple in 
both sexes, fusiform or resembling a ram’s horn, and sometimes but. 
slightly thi¢kened in the middle, almost setaceous, pectinated in both 
sexes, or at least in the males, and where the inferior palpi are of a 
moderate size or small, almost cylindrical, and always formed of 
three distinct joints. The wings are almost tectiform, and exhibit 
transparent spots in many. There is no terminal brush to the ab- 
domen. The spurs of the posterior extremity are generally small. 
The caterpillars live exposed on various leguminous plants. They 
are cylindrical, usually pilose, without a posterior horn, similar to 
those of different species of Bombyx, and form a fusiform or ovoid 
cocoon of silk, which they attach to the stemsof plants. The habits 
of these Insects have been well described by M. Bois-Duval, in the 
work I have just mentioned. These Lepidoptera have been distin- 
guished in France by the names of Sphinz-béliers, Papillons-pha- 
léenes, &c. 
f te ZYGENA. 
The Zygene are not found in the western continent. Their an- 
tennz are simple in both sexes, and terminate abruptly in a fusiform 
club, or one resembling a ram’s horn; their inferior palpi extend be- 
yond the clypeus, and are pointed at the extremity. 
Z. filipendulz; Sphinx filipendulz, L.; Res., Insect., I, Class 
II, Pap. Noct., lvii. Black or bluish-green; six red spots on 
the superior wings; the inferior ones red, with their posterior 
margin the colour of the body. 
(1) Bombyx venulia, Fab. See Lat., Gen. Crust. et Insect., IV, p. 211; Dalm., 
Anal. Entom., p. 49; it would perhaps be more in conformity with the natural 
order, if this subgenus were placed near Agarista. 
