386 BULLETIN 140, UNITED STATES NATIONAL MUSEUM 



its antero-postero diameter 145/*. Spicules slightly unequal, the 

 left 1.75 mm. long, with broad alae, which are slightly asymmetrical 

 near tip. Eight spicule, 1.65 mm. long, with narrow alae. Female 

 12 to 13 mm. long by 420/* to 460/* wide. Esophagus 1.6 mm. long; 

 bulb 420/* long by 270/* wide. Vulva approximately at middle of 

 body. Anus 1.2 to 1.3 mm. from posterior end. Eggs 70/* by 40/*. 



HETERAKIS LANEI Chandler, 192G 



Chandler 20 describes this second new species also from the cecum 

 and large intestine of Lophura rufa; Zoological Gardens, Calcutta,, 

 India. 



Morphology. — Heterakis (p. 50) : Small, slender worms. Esoph- 

 agus 1/7 to 1/8 of body length. Lips of moderate size, with 

 unusually conspicuous papillae. Lateral alae narrow. Male 9 to 

 9.6 mm. by 290/* wide. Esophagus 1.25 mm. long by 75/* wide, in 

 front of bulb, which is 300/* long by 190/* wide. Tail 400/* to 45G> 

 long; caudal alae narrow. Caudal papillae said to be normal in 

 number, but the third and fourth lateral paracloacals (=adanals) 

 have common root and are large and coarse, the first and second 

 smaller. Ventral paracloacals small and inconspicuous. Sucker 

 large, 140/* in antero-postero diameter; its posterior border about 

 175/* anterior to cloacal aperture. Spicules almost equal but of 

 different shape, the left spicule 2 to 2,2 mm. long, alate; the right 

 spicule nonalate, about 2 mm. long. Female 9 to 10 mm. long by 

 280/* to 300/* wide. Esophagus 1.15 to 1.4 mm. long; bulb 360/* long 

 by 200/* wide. Vulva very slightly anterior to middle of body; 

 pre- and postvulvar protuberances present. Tail about 950/* long. 

 Eggs 65/* to 68/* by 40/*. 



HETERAKIS VARIABILIS Chandler, 1926 



Chandler 21 reports the discovery of this species in the cecum and 

 large intestine of Poly plectrum bicalcaratum ; Zoological Gardens, 

 Calcutta, India. 



Morphology. — Heterakis (p. 50) : Rather large and slender worms. 

 Esophagus 1/8 to 1/7 of body length. Lips large, papillae not prom- 

 inent. Lateral alae very narrow along head, suddenly widening 

 about 150/* from anterior end to a width of 40/*; gradually narrow 

 posteriorly, extending 2/3 of body length in female, but disappearing 

 anterior to middle of body in male. Mais 9 to 10 mm. long by 310/* 

 wide. Esophagus 1.5 mm. long; bulb 320/* long by 230/* wide, Alate 

 tail end narrow and long, 480/* long by 220/* wide. Caudal papillae 

 said to be normal in number; the first lateral paracloacals (adanals) 



20 1926: Indian J. M. Ros. Calcutta, vol. 13 (3). p. 618, figs. 1 and 2. 

 21 1926: Idem., pp. 619, 620, fiff. 4. 



