LEPIDOPTERA, 289 
SEs14, 
Where the antenne are terminated by a little tuft of scales. The 
wings are horizontal and marked with transparent spots. The 
scales of the posterior extremity of the abdomen form a brush. Se- 
veral of these Insects bear a close resemblance to Wasps or other 
Hymenoptera, to Diptera, &c. * 
Tuyris, Hof’. Illig. 
The Thyrides resemble the Sesiz, but their antenne are much more 
slender, almost setaceous, and destitute of the terminal tuft. Their 
wings are angular and dentated. ‘Their abdomen terminates in a 
point. 
M. Bois-Duval, whose knowledge of Lepidoptera in general, and 
of those in Europe particularly, is not inferior to that of our most ce- 
lebrated entomologists, and who is about to publish a Monograph of 
the Zygzenides, that has received the approbation of the Royal Aca- 
demy of Sciences, has observed the metamorphosis of the most known 
species }. 
ABcocera, Lat., 
Where the antennex are also destitute of the tuft of scales, but evi- 
dently thickened in their middle, and fusiform; the second joint of 
the inferior palpi is furnished with a bunch of hairs, projecting in the 
form ofa rostrum. ‘The abdomen terminates ina simple point. The 
wings are tectiferm and entirely covered with scales. Their meta- 
morphosis are unknown f. 
The fourth and last section of the Sphinges, that of the Zy¢=nipEs, 
is composed of Lepidoptera, in which the antenne, always terminated 
in a point destitute of a tuft, are sometimes simple in both sexes, fu- 
siform or resembling a ram’s horn, and sometimes but slightly 
thickened in the middle, almost setaceous, pectinated in both sexes, 
or at least in the males, and where the inferior palpi are of a mode- 
rate size or small, almost cylindrical, and always formed of three dis- 
tinct joints. The wings are almost tectiform, and exhibit transpa- 
rent spots in many. There is no terminal brush to the abdomen. 
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 stems of 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 Sphinx-béliers, Papillons-pha- 
léenes, &c. 
* See the Monographs of the Sesie, by Laspeyres, Hiibner, Godart, &c. 
+ Sphinz fenestrina, Fab.; Lat., Ibid. 
t 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, 
