[46] See above, Vol. I. 4th Ed. p. 66. Note[90].
[47] Surely the denomination ought to have been Arachnido-Crustacea, since the learned author considers them as belonging to the Crustacea class.
[48] It may not be without use to give here a short definition of the Annulosa; I mean excluding the Vermes, which Mr. W. MacLeay has included; and the Annelida, which Latreille has made the fifth of his Annulose classes. Ann. du Mus. 1821.
Annulosa. Animal invertebrate, oviparous; external integument of a firmer consistence than the internal substance, serving as a general point of attachment to the muscles; eyes immoveable; legs more than four, jointed.
Classes.
1. Crustacea. Gills external; more than eight legs.
2. Arachnida. Gills internal; spiracles; eight legs.
3. Insecta. Tracheæ; spiracles; six to eight thoracic legs.
[49] What L. Dufour regards as the liver in Scorpio (N. Dict. d'Hist. Nat. xxx. 421.) Treviranus looks upon as an Epiploon (Fettkörper) both in Scorpio and Aranea. 6. t. i. f. 6. A A. t. ii. f. 24. dd. Hepatic ducts: t. i. f. 6. ii. t. ii. f. 24. β. β. β. β.
[50] S. minutissima of Marsham is synonymous with Dermestes atomarius De Geer, Scaphidium atomarium Gyllenh., and Latridius fascicularis Herbst., but surely arranging with none of these genera, being sufficiently distinguished from them and every other insect by its singular capillary wings. In my cabinet it stands under the name of Trichopteryx K.
[51] Panz. Fn. Germ. Init. lxii. 24. Comp. Hor. Entomolog. Addenda, &c. 523.
[52] The Annelida have, however, sometimes jointed organs, which facilitate their progressive motion whether vermicular or undulatory; but they cannot be deemed legs, since they neither support the body nor enable it to walk, &c. Latreille Anim. invertebr. Artic. 126. Ann. du Mus. 1821.