NEMATODE PARASITES OF BIRDS 



161 



180>, from its end. Vulva at anterior 2/5 of body. Eggs not ma- 

 ture in specimen described. 



Life history. — Unknown. 



Distribution. — Africa (Belgian Congo, Leopoldville) and Asia 

 (India). 



CONTRACAECUM MAGNIPAPILLATUM Chapin, 1925 



Host. — Megalopterus hawaiiensis. 



Location. — Not given. 



Morplioloijtj. — Contt aeaecum (p. 146): Lips subequal, the width 

 of each at base greater than its height. Interlabia slightly less high, 

 subtriangular. Dorsal lip with two double papillae, each sub- 

 ventral lip with one double papilla. Amphids in interlabia adja- 

 cent to dorsal lip ; excretory pore near base of ventral interlabium. 



Male 20 mm. long by 585/x wide near middle of body. Lips 75/x 

 high ; cervical constriction 75/* behind base of lips. Cervical papillae 

 645/i posterior to base of lips, oval, slightly prominent. Esophagus 



Figs. 235-236. — 235, Cqntbacaecum tbicdspe. a, Male tail; b. dorsal view; 



C, FRONT VIEW OF HEAD. AFTER UePOKLST. 1!)1C>. 236, CONTR ACABCC M MAG- 

 NIPAPILLATUM. Male tail. After Chapin, 1925 



3.2 mm. long; esophageal appendix 3/14, intestinal cecum 3/4 as long 

 as esophagus, respectively. Cloacal aperture 200/a from posterior 

 extremity of body, which ends in an acutely conical tip 13^ long. 

 Caudal papillae (fig. 230) arranged as follows: A pair of very 

 large double papillae, situated 2G/x. posterior to the cloacal aperture, 

 on two bosses, each boss measuring 43/x by 23^. and separated from 

 the other by a distance equal to the shorter diameter of either. 

 Posterior to the double papillae there are 2 pairs of single papillae, 

 one pair being submedian and the other pair subjateral and slightly 

 more prominent. Proceeding anteriorly from each double papilla 

 is a single row of 21 single papillae, the most anterior being about 

 4 mm. in front of the cloacal aperture. Spicules equal and similar. 

 3.8 mm. long, the tips acute. 



Female 23 mm. long by 750/i wide just posterior to vulva. Ante- 

 rior portion similar to that of male. Esophagus 3.37 mm. long; 

 ratios of length of esophagus to that of appendices virtually the 



