LEPIDOPTERA. 609 
The third' division of Sphinx, Sesiades, comprises those with the antennse always simple, elongate- 
fusiform, and often terminated by a small bundle of scales ; the palpi are slender, and distinctly 3-jointed ; 
the abdomen is generally terminated by a tassel. The caterpillars devour the interior of twigs, or the 
roots of vegetables, like those of Zeuzera or Cossus ; they are naked, without any posterior horn, and 
construct a cocoon with the particles of the materials on which they have fed. 
Sesia, Latr., — 
Has the antennse terminated by a small brush of scales ; the wings are horizontal, and have glassy spaces ; the 
tail is tasselled. Many of the species resemble Wasps and other hymenopterous and dipterous insects. [Nu- 
mei'ous small British species, which fly about in the hottest sunshine.] 
Thyris, Hoff., ditfers in the antennse being nearly setaceous, and the abdomen pointed. 
Mgocera, Latr., has the antennse without a bundle of scales at the tip, but thickest in the middle ; the abdomen 
also pointed at the tip. The wings are entirely clothed with scales. 
The fourth and last division of Sphinxes, Zyg^nides, has the antennse always terminated in a point 
without a brush, and either simple in both sexes and fusiform, or thickest in the middle ; setaceous 
and pectinated, at least in the males ; the palpi of moderate size, or small, subcylindric, 3-jointed ; the 
wings are deflexed, and have, in many, vitreous spots ; the abdomen is not tasselled ; the spurs of the 
hind-tibiae are small ; the larvae are exposed, and feed on various leguminosae. They are cylindric, 
without a posterior horn, pilose, like those of many Bombyces, and form a silken cocoon, which they 1 
attach to stems of grass, &c. Their habits are well described by Boisduval, in a monograph on this 
tribe. 
ZYG.ENA, — 
The typical genus, is not found in the New World ; the antennae are simple in both sexes ; suddenly terminated 
by a fusiform mass, and the palpi reach beyond the clypeus, and are attenuated at the tip. [The species are 
numerous. 
Sphinx filipendulce, [the Hornet Moth, a very common and handsome species, is the type]. 
Syntomis, Illig., differs in having the antennae slender and gradually dilated ; the palpi are shorter. [Exotic 
species.] 
Atychia, Hoff., has simple antennae in the females, or bipectinated in the males ; the palpi very pilose, and ex- 
tending considerably beyond the clypeus ; the spurs large. 
Procris, Fab. {Ino, Leach), approaches Atychia in the antennae, but the palpi are shorter, the wings longer, and 
the spurs small. S. statices, Linn., [the Forester Sphinx, a very common small species, of a shining green colour]. 
The other Lepidoptera of this division have the antennae in both sexes bipectinated. 
Glaucopis, Fab., has a distinct proboscis. 
Aglaope, Fabr., has not a proboscis. Many species of these two subgenera occur in tropical climates ; they seem 
to connect the Crepusculariae with Callimorpha. 
THE THIRD [AND LAST] FAMILY OF THE LEPIDOPTERA,— 
j The Nocturna, — 
Presents to us ordinarily the wings bridled in repose by a bristle or bunch of hairs arising at the base 
j of the outer edge of the lower pair, and passing through a ring on the under side of the upper. The 
wings are horizontal or deflexed, and sometimes rolled round the body. The antennse gradually di- 
j minish to the tips, or are setaceous. This family is composed in the Linnsean system of the single 
i! genus 
|j Phal^ena [or Moths]. 
These insects in general fly only during the night, or after sunset ; many are destitute of a proboscis ; 
some females are destitute of wings, or have only very small ones. The caterpillars generally spin a 
cocoon ; the number of their feet varies from ten to sixteen ; the chrysalides are always rounded, and 
I not angulated nor pointed. 
The classification of this family is exceedingly embarrassing, and our systems are yet but imperfect 
j sketches. We divide it into ten sections. 
'The first section, Hepialites, has for its types the genera Hepialus and Cossus of Fabricius. The 
caterpillars are naked and fleshy, and reside in the interior of vegetables, upon which they feed ; their 
cocoons are for the most part formed of the particles of these vegetables. The segments of the abdomen 
of the pupae are denticulated ; the antennae are always short, with only a single sort of small short teeth. 
In others they are terminated by a single filament, but furnished at the base in the males with a double 
R R 
