. A catalogue of the British non-parasitical worms in the collection of the British Museum. Worms. a. Worm of the natural size. b. The proboscis extended, of the natural size. c. The same opened. d. A foot viewed laterally, magnified. anterior, and more so towards the posterior extre- mity, flattish, Y^oths of an inch in breadth, of a beautiful pearly lustre and colour all over, smooth, without spots or stains. The feet yellowish ; ven- tral surface flat, perlaceous, with a purplish furrow down the centre. Head distinct, square, truncate in front, where there is a very short, apparently unjoin
. A catalogue of the British non-parasitical worms in the collection of the British Museum. Worms. a. Worm of the natural size. b. The proboscis extended, of the natural size. c. The same opened. d. A foot viewed laterally, magnified. anterior, and more so towards the posterior extre- mity, flattish, Y^oths of an inch in breadth, of a beautiful pearly lustre and colour all over, smooth, without spots or stains. The feet yellowish ; ven- tral surface flat, perlaceous, with a purplish furrow down the centre. Head distinct, square, truncate in front, where there is a very short, apparently unjointed antenna on each outer angle, and a similar pair beneath. Mouth inferior, evolving a very large proboscis, sometimes of a pink colour, greyish in others, rough, with miliary granules, and its edge crested with numerous short papil- lary tentacula arranged in longitudinal series: it contains a cartilaginous tube formed of eight equal pieces, which is closed with two semicircular lips or valves continuous with the outer sheath, and fringed with a double series of longish ten- tacula ; and, within this inner proboscis, there is a pair of small pointed horny brown jaws. Segments narrow, convex dorsally, the lines of separation indistinct in the centre, but strongly marked along the sides; about 140 in number (in two specimens of average size 143 were counted), the anterior streaked with pale. 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 British Museum (Natural History). Dept. of Zoology; Johnston, George, 1797-1855. London : Printed by order of the Trustees
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectworms, bookyear1865
