[1012] Plate [IX.] Fig. 7, 11, 12, 15, 19. g´. The Collare of Hymenoptera and Diptera has usually been regarded as representing the Prothorax of Coleoptera, Orthoptera, &c. But this difference obtains between them—the latter evidently belongs to the Manitrunk, and its muscles do not appertain at all to the Alitrunk; whereas the Collare as evidently is a part of the latter, its muscles belong to it, and its functions in assisting in flight are important. These reasons, and others we shall state hereafter, induced us long ago to consider this part as not representing the Prothorax; and they seem to have induced M. Chabrier almost to adopt a similar opinion. Sur le Vol des Insectes. Ann. du Mus. 3eme Ann. 414. et 4eme Ann. 54—.
[1013] Plate [XXII.] Fig. 8, 11. h´.
[1014] [Ibid.] Fig. 8. Plate [VIII.] Fig. 3, 12, 14, 16. [IX.] Fig. 1, 7, 8, 10-12, 15, 19, 21. i´.
[1015] Plate [VIII.] Fig. 14, 20. [IX.] Fig. 11, 12. and [XXII.] Fig. 8. b´´.
[1016] Plate [X.] Fig. 1.; and [XXVIII.] Fig. 1-8, 10.
[1017] Plate [XXVIII.] Fig. 3-5. b´´´.
[1018] Plate [X.] Fig. 1. c´´´.