. Bulletin - United States National Museum. Science. 330 BULLETIN 140, UNITED STATES NATIONAL MUSEUM Life history.—Unknown; probably involves intermediate stages in other hosts. Distribution.—Asia (Siam). OXYSPIRURA SYGMOIDEA (Molin, 1860) Stossich, 1897 Synonyms.—Spiroptera anthuris Rudolphi, 1819, of Diesing, 1851, part; Spiroptera sygmoidea Molin, 18605; Filaria anthuris Linstow, 1878, not Filaria anthuris (Rudolphi, 1819) Schneider, 1866. Hosts.—Primary: Corvus corone, C. frugilegus,' secondary: Un- known. Location.—Orbital cavity and under nictitating membrane. Morphology.—Oxyspirura (p.
. Bulletin - United States National Museum. Science. 330 BULLETIN 140, UNITED STATES NATIONAL MUSEUM Life history.—Unknown; probably involves intermediate stages in other hosts. Distribution.—Asia (Siam). OXYSPIRURA SYGMOIDEA (Molin, 1860) Stossich, 1897 Synonyms.—Spiroptera anthuris Rudolphi, 1819, of Diesing, 1851, part; Spiroptera sygmoidea Molin, 18605; Filaria anthuris Linstow, 1878, not Filaria anthuris (Rudolphi, 1819) Schneider, 1866. Hosts.—Primary: Corvus corone, C. frugilegus,' secondary: Un- known. Location.—Orbital cavity and under nictitating membrane. Morphology.—Oxyspirura (p. 321) : Body sigmoidal, attenuated at both ends, truncated anteriorly, slender and acutely pointed pos- teriorly. Cuticula with fine transverse striations. Mouth large, or- bicular, without lips; 4 submedian cephalic Pig. 394.—Oxyspirura parvovuji. Posterior end of female. After Sweet, 1910 Male 11 mm. long by 40G> wide. Tail coiled in 2 turns, without alae. Four pairs of postanal papillae (fig. 396), the papillae of the third pair from posterior end lateral of the others; preanal papillae apparently absent. Spicules unequal, the right short, thick, some- what curved, with very blunt point; the left filiform, pointed, alate, and 2^2 times as long as the right. Female 11 to 15 mm. long bj7 500/* wide. Anus some distance from tail end. Position of vulva not determined. Life history.—Unknown; probably involves intermediate stages in other hosts. Distribution.—Europe (Austria (Vienna)) and Asia (Russian Turkestan). OXYSPIRURA TANASIJTCHUKI Skrjabin, 1916 Hosts.—Primary: Birds of the family Icteridae; secondary: Unknown. Location.—Conjunctival sac. Morphology.—Oxyspwura (p. 321) : Body white. Cuticula with extremely delicate transverse striations. Anterior extremity (fig. 397a) rounded. Buccal cavity 170^ long, with thick walls. Two lateral and 4 submedian Please note that these images are extracted from scanned page images that may ha
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