. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 159 intestine runs forward for a length of mm. Body abruptly widened at level of anterior end of cecum. Male 26 mm. long by 600/t wide. Cloacal aperture 220//, from caudal extremity. According to Connal, 3 pairs of postanal papillae, the first pair double and button-like, the second and third pairs smaller, nipple-like; according to Baylis and Daubney (fig. 233), 9 pairs of postanal papillae, this being the particular by which this species can be differentiated from C. microcephalum. Numerous preanal papillae
. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 159 intestine runs forward for a length of mm. Body abruptly widened at level of anterior end of cecum. Male 26 mm. long by 600/t wide. Cloacal aperture 220//, from caudal extremity. According to Connal, 3 pairs of postanal papillae, the first pair double and button-like, the second and third pairs smaller, nipple-like; according to Baylis and Daubney (fig. 233), 9 pairs of postanal papillae, this being the particular by which this species can be differentiated from C. microcephalum. Numerous preanal papillae. Spicules equal, mm. long. 1--M. Fig. L'34.—Contkacaecum scotti. «, Esophagus and appendices; b, head; c, LATERAL VIEW AND d, VENTRAL VIEW OF MALE TAIL. AFTER LHIPER AND ATKIN- SON, 1915 Female mm. long by 700/i, wide. Vulva mm. from head end. Vagina about 170/a long, dividing into 2 parallel uteri. Eggs oval, 26/a long by 21/x wide, with thick shells. Life history.—Unknown. Distribution.—Africa (Lagos) and Asia (India). CONTRACAECUM SCOTTI (Leiper and Atkinson. 1914) Baylis, 1920 Synonym.—Kathlcena scotti Leiper and Atkinson, 1914. Host.—Diomedea melanophrys. Location.—Intestine. Morphology.—Contracaecum (p. 146) : Three lips (fig. 2345) 135u long by 130/x wide. Interlabia large, pentagonal, 80/* long by 50/* wide near base. Esophagus (fig. 234a) mm. long by 400/*. wide, posterior part slightly differentiated into muscular bulb and with a posteriorly directed appendix 550/x long by 220/x wide. Anteriorly. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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