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XII.–On some Points in the Structure of Tubifex

Published online by Cambridge University Press:  17 January 2013

W. C. M'Intosh
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Extract

At least two species of Tubifex are abundant in Scotland, one of which is, perhaps, more prevalent in streams, the other in lakes. The former is common at the margin of the river Tay, when the water is low, in sandy tubes of little tenacity, and often in tunnels formed amongst the wet sand under stones, just as many of the marine annelids occur. Its length varies from three-fourths of an inch to an inch and a-half when stretched, and the segments range from fifty to seventy, the average number probably being sixty. The body is of various shades of dull fawn or pale madder-brown, somewhat interrupted by the pale bands at the junctions of the segments, and streaked by the reddish dorsal vessel; or, in summer, marked anteriorly by the whitish mass of the reproductive organs. It is easily recognised amongst its fellows by its faintly purplish or lilac hue, as well as by its peculiar mode of progression; and not a few are observed with reproducing heads and tails. This form, perhaps, has most claim to be called Tubifex rivulorum.

Type
Research Article
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 26 , Issue 2 , 1871 , pp. 253 - 267
Copyright
Copyright © Royal Society of Edinburgh 1871

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References

page 253 note * Hist. Nat. du Tubifex, &c.; Mém. couronnés et Mém. des sav. étrangers, &c.; l'Acad. Roy. de Belgique, tom. xxvi. p. 11, Plate II. fig. 8.

page 254 note * Op. cit. Pl. II. figs. 6 and 7.

page 254 note † Beobach. über Anat. u. entwicklung. &c, p. 25, Pl. XIII. fig. 15.

page 254 note ‡ Recherches Anat. sur les Oligochètes, p. 7.

page 255 note * Whatever result more extended investigations may give with regard to the specific value of characters derived from the shape of these bodies, it is right that the name of Dr Thomas Williams should be honourably remembered in conjunction therewith. Vide his paper on the “Blood-proper and Chylaqueous Fluid of Invertebrate Animals,” Philos. Trans. P. II., 1852.

page 257 note * Trans. Linn. Soc. vol. xxvi. p. 637.

page 257 note † Mr Lankester has altered his views here.—Vide his paper in the Quart. Jour, of Micros. Sc. vol. v. N. S. p. 109.

page 258 note * Zeitsch. f. wiss. Zool. Bd. xix. (1869), p. 614.

page 258 note † Ueber die Nais diaphana, &c., Nova Acta Acad. Leop. Carol. Tom. xiv. Pt. i. p. 411.

page 258 note ‡ Report Brit. Assoc. 1851, p. 182; and Philos. Trans. Part ii. 1852, p. 625.

page 259 note * Beiträge zur Anat. der Gattung Enchytrœus, &c. Schriften der Physik. ökonom. Gesellschaft in Königsberg, 1862, p. 108.

page 263 note * Report Brit. Assoc. p. 182, Pl. III. fig. 8.

page 263 note † The addition of a small quantity of this drug in solution was speedily fatal to ciliary action.

page 263 note ‡ Ann. Nat. Hist. 4th Se. vol. 6, p. 264 (Extr. Comptes Rendus).