Art. 6 



TWO NEW NEMATODES — WALTON 



The general measurements of the females of the two species are as 

 follows : 



Measurement 



P. armatus P. batrachiensu 



Total average length 



Width at vulva 



Length of esophagus 



Esophageal bulb 



Distance from nerve ring to lips 



Distance from excretory pore to lips 



Distance from vulva to lips 



Distance from anus to tip of spike.. 



Length of spike 



Kggs 



3.5 mm 



0.24 mm- 



0.28 mm 



0.15 by 0.15 mm 



0.175 mm 



0.36 mm 



1.5 mm 



0.5 mm 



0.5 mm 



60m by 100m (4 to 

 8 celled) . 



4.2 mm. 

 0.36 mm. 

 0.66 mm. 

 0.125by0.15mm. 

 0.165 mm. 

 0.61 mm. 

 1.8 mm. 

 0.9 mm. 

 0.75 mm. 

 35m by 100m (1 

 celled) . 



The name armatus is given because of the armored condition of the 

 anterior end of the esophagus. 



Tijpe specimens. — U.S.N.M. Helm. Coll. (Bureau of Animal 

 Industry) No. 27061 . From Rana pipiens and R. clamitans, intestine. 

 Collected by Bruce Reynolds, August, 1927, at University, Va. 



OXYSOMATIUM PUNCTATUM, new species 



Figure 1, d-g 



Material collected from Rana vittigera (Los Banos, Philippine Is- 

 lands) includes female specimens of a species of Oxysomatium, which 

 differs from the other previously described species from the same 

 area in several important features. 



Specific diagnosis. — Oxysomatium: Lips distinct and each provided 

 with two papillae. Head definitely separated by a constriction from 

 the rest of the body, a characteristic not found in other species of 

 this genus. 



Alale, unlmown. Female, 3.6 mm long. Anterior end of worm 

 characterized by the presence of small cuticular bosses, again a specific 

 character for this species only. A very short pharynx precedes the 

 short esophagus, which is followed by a distinct flasklike bulb opening 

 into a greatly dilated intestine. Lateral alae extend from lip region 

 to base of tail spike. Vulva in anterior half of body. Uteri opposed; 

 ovaries amphidelphous. Eggs contained well-defined larvae, some of 

 which are apparently hatched in utero. 



