Copy 2

On the history and natural arrangement of insects / By William Swainson and W.E. Shuckard.

  • William Swainson
Date:
1840
Catalogue details

Licence: Public Domain Mark

Credit: On the history and natural arrangement of insects / By William Swainson and W.E. Shuckard. Source: Wellcome Collection.

    35/420 page 25
    form two tribes, each consisting of a single genus, Pe- repates and Campontia. Those which have their feet furnished with cirrhi, are the Nererp#, which are very abundant upon our coasts. They have a slender elon- gate body, their legs are furnished with tubercles, and the proboscis is armed with two very strong mandibles. They comprise many genera; viz. Glycera, Nephtys, Alciope, Nereis, Syllis, Phyllis, Hesione, &c. The Ev- Nicipz resemble the latter in their general form ; but their feet are furnished with long filaments springing from one stem, like the teeth of a comb. They com- prise the genera Gnone and Aglaura, which have eight “ mandibles,and conceal the head beneath the first segment of the body: Lycidice and Leodice have seven man- dibles, with the head free and porrect; and further, Dio- patra, Eunice, &c. The AmpHynomip& are those whose branchie are very complicated,—being tufted or ramose, —and they are spread all over the body. They have no maxille. The genera they consist of are Hiponoe, Euphrosyne, Amphynoma, Chloeia. And, lastly, the Apuropitips, which are the most conspicuous of all: their body is oval, and fringed with long sete glittering with the most brilliant metallic splendour ; their back is furnished with large membranous plates like elytra, dis- posed alternately, and hidden beneath an arch of fur formed by a dense multitude of hairs, which spring, like the before-mentioned sete, from the feet of the animal, and are placed alternately as far as the twenty-fifth pair. They comprise Sigalion, Palmyra, Aphrodita, &c. Polynoe closely approaches the Aphrodite in their struc- ture, but the latter are destitute of sete. [(18—23.) W.E. Sh. ] (24.) Mr. MacLeay’s is the last arrangement of the Annelides we shall notice: his definition of the whole class and of the chief groups will here be given in nearly his own words. These animals, he observes, differ from true (or rather typical) Annulosa, in being hermaphrodite, and in general red-blooded. They are soft, vermiform animals, of an articulated structure,
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