NEMATODE PARASITES OF BIRDS 



315 



Life history. — Unknown; probably involves intermediate stages in 

 other hosts. 



Distribution. — Australia (Queensland) . 



THELAZIA LUTZI Travassos. 1918a 



Hosts. — Primary: Penelope, species; secondary: Unknown. 

 Location . — Eye ? 



Fig. 376. — Thelazia dacelonis. a, Head end, showing vulva ; b, tail of 

 female; c, tail of male. After Breinl, 1913 



Morphology. — Thelazia (p. 311) : Transverse striations of cuticula 

 strongly developed (377a). Buccal cavity 35 to 49/* wide by 28/z 

 deep. Esophagus slightly claviform, about 670 to 740/* long by 42 

 to 49/* wide. 



Male 22 mm. long by 400 to 500/* wide. Caudal extremity (fig. 

 378) curved ventrally. Ten pairs of preanal papillae, 1 unpaired 



Fig. 377. — Thelazia lut/.i. Female. a, Head end, showing vulva; b, tail. 

 After Travassos, 1918 



papilla anterior to clpacal aperture; 2 pairs of postanal papillae 

 and 1 unpaired papilla. Spicules unequal and dissimilar; one 740/* 

 long by 7/i wide, the other 190/* long by 35/* wide. Cloacal aperture 

 85/* from the tail end, the latter obtuse and rounded. 



Female 25 to 27 mm. long by 500 to 800/* wide. Vulva (fig. 377a) 

 530/* from head end. salient. Anus 100/* from tail end (fig. 3776), 

 the latter obtuse. 



