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Show 296 DR. T. s. COBBOLD ON ENTOZOA. [Mar. 7, dinal lines are not represented here ; but they are separately shown figure 6, where the quarter-inch glass also brought into view numerous transverse striee between the ridges. Alterations of the focus, however, served to show that the transverse lines were continuous and not interrupted by the longitudinal lines. I am under the impression that these lines are due to the presence of water-vascular canals, but could not demonstrate the existence of a lumen with certainty. Another illustration shows part of the bursa highly magnified (fig. 7). The tubular character of the rays, with their finely granular contents, was well seen, the bursal membrane being itself marked by a series of perfectly distinct strise radiating from the base to the outspread margin, the latter being distinctly bordered by a thin extension of the cuticular layer. In another drawing I have represented an enlarged view of the head of the male (fig. 8) ; and I have also given (fig. 9) a less magnified view of the tail of the female. 14. SPIROPTERA MURIEI, nov. sp. (Plate XXI.) The eleven nematodes above mentioned as being of intermediate size I have also determined to be new to science. As already stated, they were removed by Dr. Murie from the stomach and and oesophagus of the Lemur (Pithecia leucocephala). The following characters will be sufficiently diagnostic in view of future identifications:-Head simple and unarmed, the mouth being bordered by six very slightly elevated papillse; body uniform in thickness, but suddenly narrowed at either end, both sexes presenting a conspicuous gland opening at the ventral surface, about ^r °f a n m c n below the oral margin ; tail of the male strongly curved, sharply pointed, and furnished with broad lateral folds, each about j-g" in length; spicules two, scimitar-shaped, remarkably stout and short, the larger measuring not more than -gLj-" lengthways; tail of the female comparatively blunt, the anus being placed about ^V' from the tip. Males up to 15"; females li" to 2" long. The accompanying Plate (figs. 11-13) supplies three illustrations of this worm, showing all the more essential characters above described, and likewise, in addition, the presence of a supplementary caudal appendage in the male, besides several stalked gland-ducts connected with the lateral membranes. 15. ASCARIS ANDERSONI, nov. sp. (Plate XXI.) On the 27th of September, 18/5, I received a small parcel containing entozoa from Dr. John Anderson ; and I was informed by letter that all the parasites had been obtained by the donor from hosts occupying the north-eastern province of India. In the series in question there were six examples of a small nematode removed from the ceecum of a squirrel (Sciurus ?). Two of the specimens were males, four being females. Believing them to represent a new species, I append the following diagnostic characters:- Head simple, unarmed ; body finely drawn out in front and sharply pointed behind in both sexes ; tail of the male furnished with a minute oval-shaped spine at the tip, also with two long arcuate spi- |
