[940] PLATE VII. FIG. 2, 3. and XXVI. FIG. 28. i´´.
[942] Ibid. FIG. 2. k´´. This is M. Savigny's name for this part. It has also been called _Epiglossa_. Latreille _Organisation Extérieure des Insectes_, 185.
[943] Vide Savigny _Mém. sur les Anim. sans Vertèbr._ I. i. 12--.
[944] The majority of Hymenopterous insects, though they have the ordinary _Trophi_, are not _masticators_, using their _mandibulæ_ only for purposes connected with their economy.
[945] See his _Mémoires sur les Animaux sans Vertèbres_, I. i.
[946] I have used this word here and on a former occasion (see above, p. 29), perhaps not with strict propriety, in the sense of the French word _remplacer_, for which we seem to have no single corresponding word in our language.
[954] Ibid. _a._ The _Labella_ have been usually thought confined, or nearly so, to the genus _Musca_ L.; but they may be traced in all genuine _Diptera_, i. e. excluding _Hippobosca_ L.
[958] Ibid. d´. It has not yet been satisfactorily ascertained, whether _all_ the ordinary Trophi are represented in every Dipterous mouth, the number of the lancets seeming in some cases to vary.
[962] Ibid. Labrum a´; Mandibulæ c´; Maxillary Palpus h´´.
[980] PLATE VI. FIG. 1. and VII. FIG. 2. h´.
[981] PLATE VI. FIG. 4, 10. VII. FIG. 1, 2, 4. and XXVI. FIG. 39-41. i.
[983] PLATE VI. FIG. 1, 2. and VII. FIG. 1. i´.
[990] PLATE VII. FIG. 2. l. _Mon. Ap. Angl._ i. _t._ xiii. _f._ 1. _a_, _e_.
[996] PLATE IX. FIG. 7, 10, 11, &c. and XVI. FIG. 4, 8. B.
[997] M. Chabrier, in his admirable _Mémoires sur le Vol des Insectes_. uses the term _Tronc Alifère_, which suggested the terms here employed.
[1006] M. Latreille, in his _Organisation Extérieure des Insectes_ (_Mem. du Mus._ viii. 198.) proposes calling the fore-legs of Hexapods _Propedes_; but having long ago applied this term to the false legs of caterpillars (see above, VOL. II. p. 288. &c.), we shall not adopt it.
[1010] PLATE VIII. FIG. 3, 4, 12-14, 16, 17. IX. FIG. 1, 3, 7, 8, 10-12, 15.
[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--.