240 " INSECTA. 
Insects or their larvwe, and sometimes Arachnides, previously pierced 
with their sting, to serve as food for their young. The larve are al- 
ways destitute of feet, resemble little worms, aud undergo a meta- 
morphosis in the cocoon they have spun previous to becoming 
nymphs. The perfect Insect is usually very active, and lives on 
flowers. The maxille and lip are elongated and in the form of a pro- 
boscis in many. ‘ 
We will distribute the numerous subgenera derived from the pri- 
mitive genus Sphex into seven principal sections. 
In the two first the eyes are frequently emarginated ; the body of 
the males is usually narrow, elongated, and terminated posteriorly, in 
a great many, by three points in the form of spines or dentations. 
1. Those in which the first segment of tne thorax is sometimes in 
the form of a bow, and prolonged laterally to the wings, and some- 
times forms a transversa] square, or resembles a knot or joint; in 
which the legs are short, thick, very spinous, or densely ciliated, with 
the thighs arcuated near the knee; and in which the antenne of the 
females are evidently shorter than the head and thorax. ‘These are 
the Scouser of Latreille, so named from the genus 
ScoLia *. 
In some the maxillary palpi are long, and evidently composed of 
unequal joints; the first joint of the antennz is almost conical. 
Such is 
Tiruss, Fab. 
To which we may unite the Tencyna of Latreille ¢. 
In the others the maxillary palpi are short, and composed of almost 
similar joints; the first of the antenne is elongated and almost cylin- 
drical. 
Sometimes this joint receives and conceals the following, as in 
* The Scolietz may be divided thus : 
I. Palpi always very short. Ligula with three linear divisions. Anus of the male 
terminated by three spines. The thick or callous point of the superior 
wing replaced by a small cell. 
SCOLIA proper. 
II. The maxillary palpi elongated in several. The ligula broad, and widened at the 
extremity. A recurved spine at the anus of the males. A thick distinct point 
in the superior wings. 
A. Second joint of the antenne exposed. Two complete cubital cells, or 
three, but of which the intermediate is small and petiolate. 
a. No incomplete cubital cell closed by the posterior border of the wing. 
Radial cell null or open in the females. 
TipHis. MERIA. 
b. An incomplete cubital cell, closed by the posterior border of the wing. 
TENGYRA, 
Second joint of the antennz enclosed in the first. Four cubital cells, the 
last closed by the posterior border of the wing in the males, and neither of 
them petiolate, 
MYZINE. 
M. Leon Dufour—Journ de Phys., Septemb, 1818—has published some curious 
observations on the anatomy of the Scolix. 
+ Lat., Gener. Crust. et Insect., 1V, p. 116; Fabricius; Jurine; Van der Linden, 
