Scientific Memoirs by Officers of the Medical and Sanitary Departments of the Government of India Volume 7 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1892 Excerpt: ... circlet of chitinous plates, rather larger than those of the triphine, but of very irregular shape, especially those on the side opposite to the great tooth. 1 Diesing: Systema Helminthum (1851), Vol. II, page 303. The male bursa copulatrix is, as will be seen from the figure, markedly trilobed, the lateral lobes being rounded, while the median lobe is pointed, though somewhat abruptly so. The ventral and ventro-lateral costae form a group almost exactly similar to that formed by the corresponding costae of the preceding species. The dorso-lateral consist of one large and one small branch, which embrace between them the notch between the median and lateral lobes; while the dorsal costae are also represented by two branches, the inner of which has a small rudimentary branch on its inner margin, rather nearer its root than its point. Sclerostomum tetracanthum Dies. Descriptions.--This species differs considerably from the preceding, and is, in some respects, more nearly allied to (Esophagostoma columbianum, an ovine parasite, to be described below, as the cause of nodular disease of the intestine in sheep. This resemblance is most marked in the arrangement of the parts about the external mouth opening; but, at the same time the two species cannot be considered to be congeneric, as the present species has a shallow, but at the same time distinct, buccal cup; whereas in (Esophagostoma the armed peristome is followed immediately by the oesophagus. "Diesing's1 description is as follows: --"Caput truncatum; oris limbo interna denticulis rectis densis, externo aculeis 4 majoribus obtusis cruciatim dispositis armato. "CORPUS rectum utrinque attenuatum, bursa maris triloba, lobo intermedio valde prodticto, lobis singulis multiradiatis, radiis furcatis;...