80 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



30. Body without lateral alae but with prominent white lateral lines with a 



rope-like twist ; male with 10 pairs of caudal papillae ; preanal sucker 



not over 217/t in diameter Ascaridia lineata, p. 93. 



Body with lateral alae of usual type ; male with 10 to 13 pairs of caudal 

 papillae ; preanal sucker 220 to 250m in diameter 31. 



31. Cuticle with marked annulations which may be 100fi wide ; lateral alae 3 



to 4 mm. long by 300//, wide; spicules 1.9 mm. long. 



Ascaridia fasciata, p- 91. 

 No annulations of cuticle described ; lateral alae very slender, extending 

 throughout whole body length ; spicules longer than above. 



Ascaridia galli, p. 81. 



ASCARIDIA HERMAPHRODITA (Froelich, 1789) Railliet and Henry, 1914 



Synonyms. — Ascaris hermaphrodita Froelich, 1789; Fusaria trun>- 

 cata Zeder, 1803; Ascaris truncata (Zeder, 1803) Rudolphi, 1809; 

 Ascaridia truncata (Zeder, 1803) Dujardin, 1845; Heterakis trun- 

 cata (Zeder, 1803) Schneider, 1866. 



Hosts. — Amazona ochrocephala, Chrysotis festiva, Conurus pavua, 

 C. solstitialis, Pionus (Psittacus) aestivus, P. aracanga, P. ararauna, 

 P. do?ninicensis, P. festivus, P. kucoc, P. leucotis, P. menstruus, P. 

 pulverulentus, P. pertinax, P. phoenieurus, P. purpurevs, P, species, 

 P. sulfureus, P. vinaceus. 



Location. — Intestine. 



Morphology. — Ascaridia (p. 77) : Mouth with 3 strongly developed 

 lips of almost equal size. Esophagus gradually enlarging posteriorly 

 but without forming a bulb. Distinct but delicate lateral membranes 

 present, according to Froelich and Schneider, apparently throughout 

 the whole length. 



Male 29 mm. long, according to Schneider; 19 mm. long by 750/u. 

 wide, according to Skrjabin. Cloacal aperture 323/* from posterior 

 end (in 19 mm. specimen). Caudal alae feebly developed. Preanal 

 sucker 220/*, in diameter, provided with a chitinous ring. Schneider 

 described 11 pairs of papillae but figured 13 (fig. 108) ; according to 

 Skrjabin (fig. 109), this latter number is correct, 6 pairs being pre- 

 anal and 7 pairs postanal, of unequal size and irregular distribution. 

 Spicules equal, 1.87 mm. long, of characteristic shape; starting as a 

 handle with marked transverse striations, the middle part of spicule 

 follows with smooth edges, but enlarged to form a unilateral wing 

 on the face of which are found 10 or 12 small projecting teeth; distal 

 part of spicule slender and with rounded end. 



Female 35 mm. long. No further description. 



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



Distribution. — Europe (Germany (Leipzig, P. menstruus, prob- 

 ably in captivity) and Russia), and South America (British Guiana 

 and Brazil). 



