ART. 17 



A NEW NEMATODE FKOM THE EHEA WEHR 



is located about midway between the anal opening and the posterior 

 end of the body, and five or six other papillae, smaller in size and 

 sessile, are to be seen near tiie posterior tip of the caudal alae. 

 Spicules similar and very slender, equal or nearly equal in size, and 

 about 10 to 11 mm long, this length being unusual for nematodes of 

 the size of these. In most of the male specimens that were exam- 

 ined the spicules were extruded from the body for more than half 

 their length, but in the type specimen one of the spicules remained 

 iniprotruded from the bodj^ and could be seen to extend from near 

 the posterior end of the esophagus to the cloacal opening. Guber- 

 naculum present, 1.08 mm long, triangular in shape in ventral view. 



o.z m/77 



Figure 2. — Odontosplrura cetiopcnis, new species : Ventral view of 

 male tail 



Female, 20 mm to 23 mm long by 572fi wide in maximum width. 

 The anterior end of body of most of the preserved specimens is 

 slightly coiled. Anterior muscular part of esophagus 472/^ long; 

 posterior glandular part 3.6 mm long ; latter portion a little broader 

 than former. Nerve ring about 363/x, from anterior end of body. 

 Cervical papillae 44T/x from anterior end of body. Vulva about 

 9.8 mm from anterior end of body. Anus prominent, 430/x from 

 posterior end of body. Caudal extremity abruptly narrowed just 

 posterior to anal opening; from there it gradually narrows to a blunt 

 point. Eggs embryonated, 46ju long by 17/a wide. 



Host. — Rh^a ainericana (Linnaeus). 



Location. — Proventri cuius and gizzard. 



