PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 82 



Distribution. — National Zoological Park, Washington, D. C. 



Type specimen.— IJ.S.'^M. Helm. Coll. No. 27583. 



Remarks. — The presence of a dorsal and a ventral interlabium and 

 two well-developed lateral lips, with the cephalic papillae situated 

 near the bases of the lips, and the character of the male tail place 

 this species definitely in the family Spiruridae. The possession of 

 a dorsal and a ventral interlabium, and of a short chitinous buccal 

 cavity, and the position of the vulva near the middle region of the 

 body suggest its relation to the genus Habronema. The position of 

 the cervical papillae, posterior to the nerve ring, and the length 

 and character of the spicules of the male seem to warrant the erection 

 of a new genus for this species. 



a 



o ! mm 



Figure 3. — Odontospirura cetiopenia: a. Lateral view of head ; i, dorsal view of 



head 



Cram (1927) lists two species of nematodes, Sphicra zschokkei 

 and S. unciiiipenis^ as being collected from the proventriculus of 

 Rhea americana. The first species, which was called Spiroptera alata 

 by Zschokke (1889), was later renamed Splrura zschokkei by Eailliet 

 and Henry in 1911, on the basis that the original name was pre- 

 occupied by Spiroptera alata Kudolphi, 1819. Unfortunately Zschokke 

 failed to give a complete description of this male specimen which 

 he collected, as the number of caudal papillae and the length and 

 character of the spicules were not given. More unfortunate than 

 this, perhaps, is the fact that he did not figure any portion of the 

 worm. The much greater length of the male of S. zschokkei, as 

 given by Zschokke in liis original description of this species, and 



