156 



BULLETIN HO, UNITED STATES NATIONAL MUSEUM 



Interlabia low, anteriorly rounded. Esophagus 1/6 of total length, 

 with appendix equal to 3/5 the length of the former; cecum extend- 

 ing anteriorly from the intestine for 5/6 the length of the esophagus. 



Male 29 mm. long by 880/* wide. Tail 1/124 of total length. Ten 

 pairs of pre- and post-anal papillae. Spicules 2.8 mm. long. 



Female 44 mm. long by 1.38 mm. wide. Tail 1/78 of total length. 

 Vulva anterior to middle of body. Eggs 68/* long by 57/* wide. 



Life history. — Unknown. 



Distribution. — Europe (Germany (Berlin Museum)). 



CONTRACAECUM PRAESTRIATUM Monnig, 1923 



Host.- — Podiceps capensis. 

 Location. — Not given. 



Morphology. — Contracaecwm (p. 146) : Color 

 striations, 38/* wide, very marked in anterior 1/3 



white. Cuticular 

 of bodv, then slid- 



22$ 



229. 



Figs. 227-229, — 227, Contracaeccm ovale. Head. After Lin stow, 1907. 223, 

 contracaecum ruaestriatum". anterior end. 229, male tail. after mottnig, 

 1923 



denly becoming finer. Lips (fig. 228) thick and broad, of equal 

 size, the dorsal with 2 papillae, the others with 1, all the papillae 

 being double. Interlabia short, triangular with very broad base. 

 No dentigerous ridges. Esophagus 4.1 mm. long; posteriorly 

 directed appendix 2 mm. long; anteriorly directed intestinal cecum 

 2.3 mm. long, in a female 30 mm. long. 



Male 20 mm. long by 650/* wide. Tail (fig. 229) 160/* long. Five 

 pairs of postanal papillae, 4 of which are grouped together just 

 below the middle of the tail and the fifth pair, of double papillae, 

 just posterior to cloacal aperture. At least 18 pairs of preanal 

 papillae extending about 3.6 mm. anterior to cloacal aperture. 

 Spicules equal, 1.9 mm. long, alate; a small gubernaculum present, 

 120/* long. 



