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ANALYTICAL KEY anteriorly anus Arvicola Ascaris bacillary band body length buccal capsule bursa Capillaria cavity cervical alae chitinous cloacal aperture conical corona radiata cuniculus curved cuticle cuticular diameter Diesing distal dorsal ray Dujardin eggs embryos Enlarged Epimys esophageal bulb esophagus externo-dorsal ray extremity of female extremity of male Filaria filiform genus Gongylonema gubernaculum Hall head Heligmosomum host larvae lateral lobes lateral rays latero-ventral rays Lepus Linstow lips longitudinal maximum thickness median medio-lateral membrane Molin Mouth muris nerve ring ovary ovijector oviposited ovoviviparous Oxyuris obvelata papillae parasite Parona pharynx Physaloptera portion of body postanal papillae posterior end posterior extremity posterior portion posteriorly postero-lateral rays preanal Procavia prominent Protospirura Railliet and Henry rays close Rictularia Rudolphi Seurat short slightly species spicules spiral Spiroptera Strongylus Subfamily sucker tail terminates transverse striations Travassos tremity Trichuris uteri uterus vagina ventral surface ventro-ventral vulva worm
Page 242 - HG 1915. Report on the deaths which occurred in the Zoological Gardens during 1914, together with a list of the blood parasites found during the year.
Page 1 - While engaged in the preparation of this paper the writer has had the great advantage of association with and criticism and assistance from a number of eminent and competent workers. I take especial pleasure in acknowledging the advice and the conservative and constructive criticism of Dr. Ch. Wardell Stiles. Among others should be mentioned Dr. BH Ransom, the Chief of the Zoological Division of the United States Bureau of Animal Industry, to whose policies I am indebted for the opportunity to carry...
Page 111 - UNCINARIA" Frcelieh, 1789. GENERIC DIAGNOSIS. — Strongylinae: With anterior extremity curved dorsally; mouth round to oval, opening oblique, limited by a transparent border and followed by a chitinous buccal capsule; the dorsal portion of the capsule is shorter than the ventral, and is supported by a conical structure, the point of which sometimes extends into the cavity; at the base of the buccal capsule are found two ventral teeth; toward the inner free border the ventral wall bears on each side...
Page 33 - Perroncito (1878) from the liver of a dog. Genus CAPILLARIA Zeder, 18OO. Synonyms. — Trichosoma Rudolphi, 1819 ; Trichosomum Creplin, 1839; C 'alodium Dujardin, 1845. Generic diagnosis. — Trichurinae (p. 19) : Body very slender, capillary ; anterior esophageal portion of body shorter than or rarely equal to the posterior portion of body. Bacillary band dorsal, ventral or lateral, or absent. Esophagus long and slender, gradually increasing in size posteriorly. Spicule long and slender, surrounded...
Page 243 - Wash. (1864), v. 41.) 1913. — The life history of Habronema muscae (Carter), a parasite of the horse transmitted by the house fly.
Page 168 - Buccal capsule well developed and narrow, with its aperture more or less distinctly dorsal and surrounded by a circlet of denticles, and with its base armed with teeth and spines. Along practically the entire ventral surface of each side there are two rows of cuticular combs or spines. Male with or without bursa ; the bursa when present is always small and always remains open.
Page 20 - External surface of the evaginated sheath smooth or covered with spines. Female. — Posterior portion of body may be slightly curved, but not rolled into a spiral. Vulva near the union of the anterior slender portion and the posterior thick portion of the body.
Page 7 - Eggs ellipsoidal with very thin shells, 40 by 20 [A to 60 by 25 p in diameter. Not more than a dozen or 15 fully formed eggs present in the two uteri at any one time. Eggs when passed in the feces of the host usually contain vermiform embryos which hatch in a few hours under suitable conditions of temperature. Free-living generation. — Male undescribed. Female (fig. 4) 1 to 1.2 mm. long by 40 [A in thickness.
Page 188 - Large numbers of a long, slender white worm, 3" to 5" in length, were found in the peritoneal cavity (Filaria, species not known)." The size and site suggest that this worm belongs in the genus Setaria. Cobbold (1879) says this and other worms from the beaver, noted in Morgan's paper, were collected by Doctor Ely. I can not find that this was the case. Collective genus MICROFILARIA Shipley and Fearnsides, 1906.
Page 133 - ... two small lobules (fig. 168). Ventral rays slender, close together, parallel. Externo-lateral ray at first close to the medio-lateral ray, distally curves ventrad away from the latter. Distally the medio-lateral and postero-lateral rays curve slightly dorsad. Medio-lateral and postero-lateral rays close together throughout their entire length, the tip of the latter extending slightly beyond that of the former. Tip of the postero-lateral ray about equidistant from the tip of the externo-dorsal...