. Catalogue of the Chaetopoda in the British Museum (Natural History). Oligochaeta; Polychaeta. Figs. 33, 34.—A. glacialis. Two gills from different specimens. A few gill-axes have been cut away to affDrd a better view of the rest. the notopodium. The longest axis (c) bears five forked branches; of the resultant gill-filaments the longest are thumb or finger-shaped and not more than •? mm. in length, and the shortest are mere tubercles. The smaller axes of this gill bear only two or three branches, which may be simple, that is, undivided distally (a, b). A well expanded gill from another speci
. Catalogue of the Chaetopoda in the British Museum (Natural History). Oligochaeta; Polychaeta. Figs. 33, 34.—A. glacialis. Two gills from different specimens. A few gill-axes have been cut away to affDrd a better view of the rest. the notopodium. The longest axis (c) bears five forked branches; of the resultant gill-filaments the longest are thumb or finger-shaped and not more than •? mm. in length, and the shortest are mere tubercles. The smaller axes of this gill bear only two or three branches, which may be simple, that is, undivided distally (a, b). A well expanded gill from another specimen is represented in Fig. 34. It is smaller than that just described, the largest of the seven axes of which it is composed being scarcely 1 mm. in length from its base to the tip of its filaments. This axis (a) consists of three main stems, each of which bifurcates, and one of the two so formed again divides, but the other does not. In this manner, three groups, each of three gill-filaments, are clustered at the end of the axis. In all the gills examined the branches borne by an axis are clustered at tlie end, the result of the great abbreviation of the axis. A. glacialis and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ashworth, James Hartley, 1874-1936; Ashworth, James Hartley. London, Printed by Order of the Trustees of the British Museum
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