. Bulletin - United States National Museum. Science. 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.—Conttaeaecum (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.
. Bulletin - United States National Museum. Science. 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.—Conttaeaecum (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 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. mm. long, the tips acute. Female 23 mm. long by 750/i wide just posterior to vulva.
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
