Hesse, A. J.

2013-06-26T14:08:42Z

2013-06-26T14:08:42Z

1922

Description of Furcocercaria A. and Xiphidiocercaria B. from Limnaea Peregra Mul. from lochs Lubnaig and Vennacher. Description of Furcocercaria. B. from Limnaea Auricularia. Linn. from Duddingston Loch. Description of Xiphidiocercaria B. and Xiphidiocercaria C from Limnaea Peregra Mul. from the islands of Mull and Ulva. Description of Capillaria Leucisci n. sp. from the Intestine of Leuciscus Phoxinus. Linn. and also a description of the encysted "Gordius" and nematode larvae from the intestinal wall of Leuciscus Phoxinus. Linn. By a comparison of the six species of Capiilaria from fish it will be seen that there are six main points, which distinguish the different species from one another. These are:- a. The nature of the cuticles b. The presence or absence of bands, and of the structures on them. c. The length of the oesophagus, and the nature, and size of the oesophageal cells. d. The length and shape of the spicule, and the nature of the sheath. e. The shape, nature, and size of the egg. f. The different hosts. By comparing. the dimensions, it is evident that the females of C. leucisci and C. tomentosa practically correspond in size. The points. of difference which separate C. leucisci from C. tomentosa are: - a. The unstriated cuticle. b The presence of two lateral bands with tubercles only. c. The size of, -the oesophageal cells (in comparison with Dujarditt's drawing, where the cells are wider than long). d. The distance of the vulva from the anterior end. e. The absence of a distinct and characteristic constriction in the middle of the egg. f. The different host.

498624

http://hdl.handle.net/1842/7448

eng

University of Edinburgh

Biology

Parasites from fresh-water fishes and Mollusca: a new species of Capillaria from the minnow and five new Cercariae from Limnaea

PhD Doctor of Philosophy