NEMATODE PAEASITES OF BIRDS 317 



anus at base of the appendage, 370/a from tip of tail. Vulva (fig. 

 379 a) in anterior part of body, 680> from anterior end in large speci- 

 mens, at a level just posterior to the middle of the esophagus. Eggs 

 51/x by 25/x. 



Life history. — Unknown; probably involves intermediate stages in 

 other hosts. 



Distribution. — Europe (Austria (Vienna Museum), Croatia, and 

 (?) Russia). 



THELAZIA PAPILLOSA (Molin, 1860) Railliet and Henry, 1910 



Synonyms. — Spiroptera papillosa Molin, 18606/ Spiroptera fal- 

 conis hptopodis Molin, 1860; Spiroptera falconis gavi-al redlis Molin, 

 1860; Spnroptera falconis Molin, 1860, not Rudolphi, 1819; {? Oxy- 

 spirura) papillosa (Molin, 1860) Ransom, 1904. 



Hosts. — Primary: Falco destructor { — Thrasactus harpyia), F. 

 gracilis {Geranospizias caerulescens) ; secondary: Unknown. 



Location. — Under nictitating membrane. 



Morphology. — Thelazia (p. 311) : Anterior end abruptly attenuated 

 with very obtuse rounded apex. Cuticula densely annulated. Neck 

 with rows of very delicate spines, posteriorly directed, each row 

 corresponding to a cuticular ring or pseudoannulation. Mouth 

 (fig. 380) large, orbicular, with tumid border. Lips absent. Two 

 lateral and 4 submedian cephalic papillae. 



Male 8 to 20 mm. long by 300/a wide. Posterior extremity more 

 attenuated than anterior, the tip of the former obtuse, rounded, and 

 only slightly curved. Molin describes 7 pairs of preanal papillae, 

 but Drasche, in redescribing the same material, states that there are 

 4 pairs of preanal and 2 pairs of postanal papillae. Right spicule 

 short and broad, with blunt point; left spicule six times as long as 

 right, slender, filiform and alate. 



Female 15 to 26 mm. long by 300 to 500^i wide. Tail gradually 

 attenuated, tip round, obtuse. Anus remote from posterior end, 

 prominent, its 2 lips tumid. Vulva in anterior part of body, not 

 far from mouth. 



Life hist&ry. — Unknown ; probably involves intermediate stages in 

 other hosts. 



Distribution. — South America (Brazil). 



THELAZIA ANOLAB1ATA (Molin. 1860) Kailliet and Henry, 1910 



Synonyms. — Spiroptera anolabiata Molin, 18606/ Spiroptera 

 cracis alectoris Molin, 1860; Filaria anolabiata (Molin, 1860) Stos- 

 sich, 1897; {? Oxyspirura) anolabiata (Molin, I860) Ransom, 1904, 



Hosts.. — Primary: Crax fasciolata\ secondary: Unknown. 



Location. — Under nictitating membrane and free in the eye. 



