. Bulletin - United States National Museum. Science. 74 BULLETIN 140, UNITED STATES NATIONAL MUSEUM the head end in Seurat's specimen. Vestibule mm. long; un- paired trompe mm. long. Eggs 60 to 63/* long by 40 to 42/* wide. Life history.—Probably similar to that of II. gallinae (p. 54). Distribution.—Asia (Turkestan) and Africa (Algeria (Medea)). HETERAKIS VALVATA Schneider, 18G6 Hosts.—Grypturus cupreus and C. nocticagus. Location.—Ceca. Morphology.—Ileterakis (p. 50) : Mouth with 3 small equal lips. Lateral membranes present. Esophagus with bulb about 217/* in diameter; slender part
. Bulletin - United States National Museum. Science. 74 BULLETIN 140, UNITED STATES NATIONAL MUSEUM the head end in Seurat's specimen. Vestibule mm. long; un- paired trompe mm. long. Eggs 60 to 63/* long by 40 to 42/* wide. Life history.—Probably similar to that of II. gallinae (p. 54). Distribution.—Asia (Turkestan) and Africa (Algeria (Medea)). HETERAKIS VALVATA Schneider, 18G6 Hosts.—Grypturus cupreus and C. nocticagus. Location.—Ceca. Morphology.—Ileterakis (p. 50) : Mouth with 3 small equal lips. Lateral membranes present. Esophagus with bulb about 217/* in diameter; slender part about mm. long. Male 10 mm. long. Caudal alac small. Preanal sucker 90/* in diameter, with papilliform nodule on its posterior edge. The anterior lip of the cloacal aperture, which is 170//, from the posterior extremity, projects as a triangular valve, from which the species derives its name. Schneider described and figured (fig. 103) only 11 pairs of papillae, but according to Travassos (fig. 102) there are 13 pairs. Spicules unequal, mm. and 1 mm. 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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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
