912 INSECTA. 
used to establish several other subgenera, which we will unite with 
the present one. They are composed of the Allantes, Doleres, Ne- 
metes, &c. of Jurine, and of the Pristophose, formed of the third 
family of the Pterones of that naturalist, with some others of Dr. 
Leach. 
T. scrophulariea, L.; Panz., Faun. Insect., Germ., C, 10, the 
male. Five lines in length; black; antenne fulvous and some- 
what thickest at the extremity; annuli of the abdomen, the 
second and third excepted, margined posteriorly with yellow; 
tibie and tarsi fulvous. It resembles a Wasp. 
The larva has twenty-two feet; white, with black head and 
points. It feeds on the leaves of the Scrophulariez. 
T. viridis, L.; Panz., Faun. Insect., Germ., LXIV, 2. The 
same length; antenn setaceous; body green; spots on the tho- 
rax and a band along the middle of the superior part of the ab- 
domen, black. On the Birch *. 
De Geer has given us the description of a very singular spe- 
cies in its form of a larva, that which he calls Mouche-a-scie of 
the /arve-limace, and to which he refers the Tenthredo cerast, L. 
It is black, with blackish wings and brown feet. The larva is 
extremely common on the leaves of various fruit-trees in the 
gardens of France. On account of its form, Reaumur called it 
Fausse Chemille Tétard. It is entirely black, and covered with 
a glutinous humour, which has also caused it to be compared to 
a Snail. 
M. Peck, an American botanist, has also furnished us with 
the complete history of another species, the larva of which is 
similar. 
Others, in which the antennz also consist of nine joints, differ 
from the preceding in those of the males, which are pectinated on one 
side. 
Craptius, (lity, Lat. + 
Some others, with a short, thick body, like that of the Hylotome, 
and considered as such by Fabricius, have from ten to fourteen joints 
in the antennze, which are simple in both sexes. 
Aruatia, Leach f. 
The following species are remarkable for their antennz, which are 
composed of sixteen joints at least, pectinated or flabelliform in the 
males, and serrated in the females. In this respect they lead us to the 
Megalodontes, the first subgenus of the ensuing subdivision. 
* For the other species, see the authors just quoted- 
+ Lepel., Ibid., p. 57. 
+ Lepel., Ibid., p. 21. In this genus, Dr. Leach only comprises those species 
which are furnished with ten joints. Kliig arranges them among his Emphyti, 
