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A NEW NEMATODE OF THE GENUS DIPLOTRIAENA 

 FROM A HISPANIOLAN WOODPECKER 



By EVERETT E. WEHR 



Zoological Division, Bureau of Anijiial Industry, US. Department of 



Agriculture 



The species of nematode described in this paper was collected from 

 the body cavity of a Hispaniolan woodpecker killed near Santa Bar- 

 bara de Samana, Dominican Republic, by E. W. Price while a member 

 of the scientific staff of the Johnson-Smithsonian Deep-Sea Expedi- 

 tion to Puerto Rico and adjacent areas. 



DIPLOTRIAENA SERRATOSPICULA, n. sp. 



Description. — Diplotriaena: Body long, slender, attenuated at ex- 

 tremities, more abruptly so at anterior than at posterior portion. Oral 

 opening more or less oval in shape, not surrounded by lips. Four pairs 

 of large submedian cephalic papillae, one papilla of each pair internal 

 to the other papilla ; papillae approximately equal in size. Lateral 

 papillae or amphids appearing as dark areas, one on each lateral side, 

 situated between the two outer submedian papillae. Chitinous tridents 

 (fig. I, h) very conspicuous, one on each lateral side of anterior end 

 of esophagus, their distal ends somewhat enlarged and tips of dorsal 

 and ventral prongs of tridents delaminated. Esophagus differentiated 

 into an anterior short, narrow, and a posterior long, broad portion. 

 Intestine usually visible through body wall as a narrow dark streak 

 extending through most of body length. 



Male 33 mm long by 390 fx wide near equator of body. Body very 

 light in color for a short distance behind anterior end and usually so 

 for a slightly greater distance anterior to tip of posterior extremity ; 

 remaining portion of body slightly darker in color. Esophagus much 

 lighter in color than intestine ; anterior portion of esophagus 220 ju, 

 long and approximately 48 11 wide ; posterior portion 2.55 mm long 

 and about twice as broad as anterior portion. Nerve ring 146 /a from 

 anterior end of body. Each trident averaging about 109.5 /x i" length. 

 Spicules (fig. i, c) unequal in length and dissimilar in shape; the 

 left spicule the longer, about 1.60 mm long, broadly curved, its diam- 



Smithsonian Miscellaneous Collections, Vol. 91, No. 5 



