318 



BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



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

 attenuated, apex truncate. Body encircled with cuticular annula- 

 tions with sharply cut posterior borders. Mouth (fig. 381) large, 

 the 6 lobes of the anterior edge of the buccal cavity are small, each 

 with a fingerlike process extending inward from the periphery of 

 the head. Buccal cavity short and wide. 



Male unknown. 



Female 8 to 17 mm. long by 40(V wide. Tail straight, abruptly 

 conical, with blunt curved tip. 



Life history. — Unknown ; probably involves intermediate stages in 

 other hosts. 



Distribution. — South America (Brazil). 



Figs. 380-382. — 380, Thelazia papillosa. Head ; front view. After 

 Drasche, 1884. 381, Thelazia anolabiata. Head. After Drasche, 

 1884. 382, Thelazia ( ?) cirrdra. Head end, showing vulva. 

 Original 



THELAZIA (?) CIRRURA (Leidy. 188G) RaiUiet, 1916 



Synonym. — Filaria cirrura Leidy, 1886. 



Hosts. — Primary: Quiscalus major ( = Megaguiscualus major)] 

 !-,econdary: Unknown. 



Location. — Orbit of eye. 



Morphology. — Thelazia (?) (p. 311) : Body cylindrical. Anterior 

 extremity conical, rounded. Mouth (fig. 382) a minute funnellike 

 orifice without papillae or internal armature. No buccal cavity. 

 No transverse striations of cuticula. 



Male 10 mm. long by 375/* wide. Caudal extremity closely rolled 

 inward, conical, blunt, without alae or papillae. Spicules strongly 

 curved. Cloacal aperture prominent. 



Female 16 mm. long by 500/i wide. Esophagus 863/a long. Cau- 

 dal extremity slightly curved or nearly straight, conical, obtusely 

 rounded. Vulva (fig. 382) about 400ju from anterior end of body. 



IAfe history. — Unknown; probably involves intermediate stages 

 in other hosts. 



Distribution. — North America (United States (Florida)). 



