. Bulletin - United States National Museum. Science. 32 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 84,u long, according to Monnig; Horst figures what is evidently a telamon partly encircling the cloaca near its aperture. Testis closely wound about anterior portion of intestine. Female 17 to 23 mm, long by 560 to 700/* wide. Esophagus length 14 of body length. Lateral cervical papillae 960/* from anterior end, excretory pore 800/*, nerve ring 660/*. Vulva (fig. 32) 250/* anterior to anus. Anus 572/* from tip of tail; tail ends in a mucronate tip 128/* long. Cuticula around vulva often inflated


. Bulletin - United States National Museum. Science. 32 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 84,u long, according to Monnig; Horst figures what is evidently a telamon partly encircling the cloaca near its aperture. Testis closely wound about anterior portion of intestine. Female 17 to 23 mm, long by 560 to 700/* wide. Esophagus length 14 of body length. Lateral cervical papillae 960/* from anterior end, excretory pore 800/*, nerve ring 660/*. Vulva (fig. 32) 250/* anterior to anus. Anus 572/* from tip of tail; tail ends in a mucronate tip 128/* long. Cuticula around vulva often inflated and may form a considerable protrusion. Vagina 120/x long. Ovejectors parallel, the cuticular portions 620/* long and the musculo-epithelial portions mm. long. Eggs oval, 63/* by 35/x. Life history.—Unknown; probably simple and direct. D istribution.— Figs. 31-32.—Codiostomum struthionis. 31, Male bursa, lateral view. 32. Female tail. After Monnig, 1923 Genus DELETROCEPHALUS Diesing, 1851 Generic diagnosis.—Deletrocephaleae (p. 30) : No corona radiata present, the mouth aperture bounded by 6 equal or subequal papillate lips. Buccal capsule provided with meridial ribs or rays and with teeth in some species. Bursa with characters of the tribe; one branch of the dorsal ray sometimes very slender. Spicules slender and equal. Vulva and anus close together. Ovejectors parallel. Type species.—Deletrocephalus dimidiatus Diesing, 1851. DELETROCEPHALUS DIMIDIATUS Diesing, 1851 Synonym.—Sclerostomy dimidiatum (Diesing, 1851) Stossich 1899. Host.—Rhea americana. Location.—Ceca and large intestine, especially at union with small intestine. Morphology.—Deletrocephalus (p. 32) : Head (fig. 33) compressed lnterally, the elliptical buccal aperture with its long axis dorso-ven-. 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 perfect


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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience