98 



BULLETIN 140. UNITED STATES NATIONAL MUSEUM 



Male 30 to 40 mm. long (77. laticauda) or 20 mm. long by 500/* 

 wide (.4. pterophora). Caudal extremity (fig. 138) broad; cloaca! 

 aperture 360// from posterior end in a 20 mm. specimen. Caudal 

 alae narrow. Preanal sucker large (100//, in diameter), with a pa- 

 pilliform nodule in the posterior rim; it is 520/x from the posterior 

 end of body. Ten pairs of caudal papillae, 4 of which are preanal 

 (3 pairs ventral, 1 pair lateral). Spicules equal, 600/* long by 21//, 

 wide. 



Female 45 to 60 mm. long. Posterior extremity sharply pointed. 

 Anus 1 to 1.5 mm. from posterior end. Vulva prominent, situated 

 in the median part of the body. 



Life history. — Probably similar to that of A. galli (p. 82). 



Distribution*. — South America (Brazil). 



Figs. 136-139. — 136, Ascaridia orthocerca. Male tail, ventral view. 137, Male 

 tail, lateral view. After Stossich, 1902. 138, Ascaridia pterophora. Male tail. 

 After Travassos. 1918. 139, Ascaridia serrata. Male tail. After Schneider, 1866 



ASCARIDIA SERRATA (Schneider, 1866) Railliet and Henry, 1914 



Synonym. — Heterakis serrata Schneider, 1866. 



Host. — Penelope humeralis. 



Location. — Intestine. 



Morphology. — Ascaridia (p. 77) : Mouth with 3 lips, the dorsal lip 

 wider than the others. An anterior and posterior denticulated plate 

 (Zahnplatten), the former with 8 teeth in a row. 



Male 41 mm. long. Preanal sucker circular, with cutinous (chitin- 

 ous) ring interrupted posteriorly by a papilliform nodule. A small 

 finely pointed appendage on posterior end of body. Ten pairs of 

 large papillae (fig. 139), 3 preanal, 2 adanal and 5 postanal. 



