EXTERNAL ANATOMY OF INSECTS. 589 
and parapleure invariably connect the one with the 
other; the former, the primary wings with the mzd-degs, 
and the latter, the secondary wings with the hind-legs. 
This circumstance seems to prove that the wings by the 
intervention of these pieces have an action upon the legs, 
and the legs upon the wings; and this is further proved 
in one case by an observation of M. Chabrier with re- 
gard to Melolontha vulgaris,—that the levator muscles of 
5 fo) ? 
the wings, by means of a long tendon, are attached to 
the lower part of the posterior coxee*. Now, more than 
one medical triend has suggested to me,.that what are 
called the core in insects are really analogous to the 
thighs of vertebrate animals>: consequently these parts 
must represent the core ; whence it woald seem that the 
wings are really appendages of the legs. It must, how- 
ever, be observed, that were this opinion admitted, in the 
Aptera, Hymenoptera, and Diptera, or even in the pro- 
thorax of other insects, there would scarcely be any ana- 
logue of the cove at all distinct from the trunk itself, 
of which even in the other Orders these pieces are com- 
ponent parts. An instance occurs in the Strepsiptera, 
and in which the arms are furnished with an alary ap- 
pendage, and the metathoraxz has none °. 
* Ubi supr. c. ii. 333. 
. * . as . < . 
> According to M. Chabrier, who agrees with him, M. Latreille 
also is of opinion, that the parapleura is the analogue of the poste- 
rior core. Ubi supra, c. il. 312. Note 2. 
e M. Latreille has changed the denomination of this Order to 
Rhiphiptera, because at first he thought that these organs were 
not at all analcgous to elytra or wings; but since, upon further 
investigation, he appears to admit that they assist in flight (4n- 
nales Génér. des Scienc. Phys. V1. xviii. 8. Compare MacLeay, Hor, 
Entom. 423. Note*), incommon justice he is bound to restore 
the name originally given to the Order. In the same place of 
