. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 319 The present writer has reexamined part of Leidy's original mate- rial, but on account of the poor condition of the material was unable to add to the description except as regards the esophageal length; a figure of the anterior region of the body of the female has also been made. The position of the species in this genus is very doubt- ful but a reassignment to another genus is inadvisable with the in- adequate description. THELAZIA (?) DIGITATA Travassos, 1918a Hosts.—Primary: Rampluistus, species; secondary:
. Bulletin - United States National Museum. Science. NEMATODE PARASITES OF BIRDS 319 The present writer has reexamined part of Leidy's original mate- rial, but on account of the poor condition of the material was unable to add to the description except as regards the esophageal length; a figure of the anterior region of the body of the female has also been made. The position of the species in this genus is very doubt- ful but a reassignment to another genus is inadvisable with the in- adequate description. THELAZIA (?) DIGITATA Travassos, 1918a Hosts.—Primary: Rampluistus, species; secondary: Unknown. L ocatio n.—Eye. Morphology.—Thelazia (p. 311) : Anterior extremity digitiform. Cuticula transversely annulated. Buccal cavity about 21/a deep by 28/i wide. Esophagus subcylindrical, about 850ju, long by 87/i, wide. Male Fig. -Thelazia (?) digitata. Female, a. Head end, showing vulva ; b, tail. After Tkavassos, 1918 Female 18 mm. long by 500/u wide. Vulva (fig. 383 a) 600> from anterior extremity, its lips salient. Caudal extremity (fig. 383 5) obtuse, curved towards the ventral face; anus 120> from end. Life history.—Unknown; probably involves intermediate stages in other hosts. Distribution.—South America (Brazil). Genus CERATOSPIRA Schneider, 1866 Synonym.—Ancyracanthus Diesing, 1838, in part. Generic diagnosis.—Thelaziidae (p. 311): Mouth surrounded by papillae and followed by a short buccal cavity. Male with very short blunt tail provided with large alae and numerous simple caudal papillae, of which 9 to 11 pairs are preanal. Two very unequal spicules. Female with very short blunt tail. Vulva in anterior part of body. Sometimes viviparous. Parasitic in orbital cavity of birds. Type species.—Ceratospira vesiculosa Schneider, 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
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