ART. 6 NEW FORMS OF NEMATODE WORMS CHANDLER 3 



Mouth opening very minute, leading by a minute tube abut lO/x in 

 length to the esophagus. Esophagus simple, cylindrical, about 800m to 

 1 mm. long. Nerve ring about 240m to 260m from anterior end. 



Male about 13 to 15 mm. long with a maximum diameter of 150m 

 to 175m. Head about 73m to 75m in diameter. Esophagus 790m to 850m 

 long, the nerve ring 240m to 260m from its anterior end. Tail conical, 

 85m to 90m in length, about 75m wide at the level of the cloaca and 

 tapering to a rounded tip about 10m wide. Spicules dissimilar and 

 unequal in length, the short right one curved, troughlike, about 

 70;i long, ending in a blunt point somewhat resembling the point of a 

 stub pen; left one trough shaped, with the sides rolled together 

 proximally, but distally expanded into a curved, spoon-shaped 

 structure; total length about 115m with a width of about 12m to 13m. 

 The body substance inside the cuticle at the posterior end of the 

 tail ends in a number of inconspicuous digitations, but there are no 

 papillae. 



Female 29 to 30 mm. long with a maximum diameter of about 325 

 to 330m. Head about 95m in diameter. Esophagus about 980m long, 

 the nerve ring about 260m from its anterior end. Posterior end of 

 body tapers down in about the last 1.5 mm. of its length to a diameter 

 at its posterior end of about 145m. The tip of the body is abruptly 

 truncated with a terminal indentation giving the appearance of a 

 cleft chin, the cleft running around the end of the body from the 

 dorsal to the ventral side. The anus is situated in the cleft at the 

 posterior extremity of the body. The vulva is situated about 1 .4 mm. 

 from the anterior end. The uteri and ovaries extend posteriorly and 

 terminate a few hundred micra from the posterior extremity. Uteri 

 filled with hatched embryos. 



Host. — Ruffed lemur {Lemur ruber). 



Location. — Thoracic cavity. 



Locality. — Calcutta Zoological Garden, Calcutta, India. 



This lemur is an inhabitant of Madagascar, and presumably 

 acquired the filariae in its native home. 



Type specimens. -United States National Museum Helminthologi- 

 cal Collections No. 8004; No. 8005. 



APROCTOIDES, new genus 



Generic diagnosis. — Filariidae; Filariinae: Body rather coarse, cylin- 

 drical, with rounded ends. Cuticle smooth, unstriated. Mouth 

 provided with three very flat inconspicuous lips. Esophagus shorty 

 divided into a very short anterior portion and a longer posterior 

 portion. Posterior end of male rolled in a close spiral, the tail short 

 and rounded, without alae or papillae." Cloaca situated on a conspic- 

 uous prominence. Posterior part of intestine slender but not 



