NEMATODE PARASITES OF BIRDS 



159 



intestine runs forward for a length of 2.46 mm. Body abruptly 

 widened at level of anterior end of cecum. 



Male 26 mm. long by 600/t wide. Cloacal aperture 220//, from 

 caudal extremity. According to Connal, 3 pairs of postanal papillae, 

 the first pair double and button-like, the second and third pairs 

 smaller, nipple-like; according to Baylis and Daubney (fig. 233), 9 

 pairs of postanal papillae, this being the particular by which this 

 species can be differentiated from C. microcephalum. Numerous 

 preanal papillae. Spicules equal, 3.28 mm. long. 



1--M 



Fig. L'34. — Contkacaecum scotti. «, Esophagus and appendices; b, head; c, 



LATERAL VIEW AND d, VENTRAL VIEW OF MALE TAIL. AFTER LHIPER AND ATKIN- 

 SON, 1915 



Female 30.8 mm. long by 700/i, wide. Vulva 1.59 mm. from head 

 end. Vagina about 170/a long, dividing into 2 parallel uteri. Eggs 

 oval, 26/a long by 21/x wide, with thick shells. 



Life history. — Unknown. 



Distribution. — Africa (Lagos) and Asia (India). 



CONTRACAECUM SCOTTI (Leiper and Atkinson. 1914) Baylis, 1920 



Synonym. — Kathlcena scotti Leiper and Atkinson, 1914. 



Host. — Diom edea melanophrys. 



Location . — Intestine. 



Morphology. — Contracaecum (p. 146) : Three lips (fig. 2345) 135u 

 long by 130/x wide. Interlabia large, pentagonal, 80/* long by 50/* 

 wide near base. Esophagus (fig. 234a) 2.53 mm. long by 400/*. wide, 

 posterior part slightly differentiated into muscular bulb and with a 

 posteriorly directed appendix 550/x long by 220/x wide. Anteriorly 



