A synopsis of entozoa and some of their ecto-congeners, observed by the author / by Joseph Leidy.

  • Leidy, Joseph, 1823-1891.
Date:
1856
Catalogue details

Licence: Public Domain Mark

Credit: A synopsis of entozoa and some of their ecto-congeners, observed by the author / by Joseph Leidy. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    124. Ascaris acuta Muller. A single male, 14 lines long and J of a line broad, was obtained from the in testine of Platessa plain/. 125. Ascaris neglecta Leidy. Body cylindro-fusiform, most narrowed an- teriorly. Head naked ; lips large, obtuse. Tail short, conical, acute. Length of female 2 inches, breadth three-fifths of a line ; male about half the size. Twelve specimens were obtained by Prof. Baird, from the intestine of Diodon maculo-slrialus. 126. Ascaris clavata Rud. Head with a linear ridge on each side. Tail short, conical, incurved, mucronate; in the female with a linear ridge extending for- ward on each side. Length of female to 3} inches, breadth £ of a line ; length of male to 2 inches, breadth to £ a line. Numerous specimens were vobtained by Prof. Agassiz from the intestine of Morrhua pruinosa, and I have obtained others from the intestine of Morrhua americana. 127. Ascaris cylindrica Leidy. Angiostomum ? cylindricum Diesing, Syst. Helm, ii, 559. Ascaris cylindrica Leidy, Pr. A. N. S., iv, 229. Body cylindroid, equally at- tenuated towards the extremities, curved. Mouth distinctly trilabiatc. Tail narrow, conical, curved, acute. Female generative aperture just posterior to the middle. Length four-fifths of a line, breadth one-twelfth of a line. Found in the intestine of Helix alternata. No cartilaginous pharynx as in Angiostomum! 128. Ascaris infbota Leidy. Pr. A. N. S., iv, 229 ; Faun, and Flora within Liv. An. 42. Found in the ventriculus of Julus marginatus. 129. Synplecta pendula Leidy. Pr. A. N. S., v, 240. From the stomach of Emys guttata. 130. Oxydris compar Leidy. Body fusiform ; head continuous with the body, subacute, with a dilatation of the epidermis ; mouth small. Tail of female long, subulate, spirally contorted ; the generative aperture one-fifth the length of the body from the head. Length of female 4 to 7 lines, breadth J of a line ; length of tail from the anus l£ lines. Seventeen specimens were found in company with others of Tccnia crassicollis in the small intestine of the cat, Felts catus. (Esophagus long, pestle-form; gizzard globulo-pyriform ; intestine dilated at the commencement, afterwards cylindrical. Males were not seen. 131. Oxyuris curvula Rud. Intestine of the horse, Equus caballus. 132. ? Oxyuris dubia Leidy. Body fusiform, curved. Head continuous with the body, naked. Mouth unarmed. Female generative aperture about the middle of the body. Tail abruptly narrowed, acutely conical. Length of female 1£ lines, breadth 1 of a line. Male not seen. Found in the ccecum of Bufo americanus, and of Salamandra rubra. SPIRONOURA Leidy. Body cylindroid, attenuated at the extremities. Head continuous with the body. Mouth round, surrounded by a circular papillated lip. Caudal extremity of male spiral, acute, tuberculate, with the two spicula of the penis curved, ensi- form, costate; of the female conical, acute, with the generative aperture at the posterior third of the body. 133. Spironoura gracile Leidy. Body of female incurved; that of male spiral posteriorly. Head naked ; mouth with a circular lip of 6 papillae. Tail of female long, calcarate, acute ; of male, with two rows each of three tubercles. Spicula