NO. 2131. NEMATODE PARAf^ITES OF RODENTS— HALL. 



57 



HETEROXYNEMA CUCULLATUM Hall, 1916, new species. 



Specific diagnosis. — Heteroxynema (p. 56) : Males approximately 

 half as long or less than half as long as females (fig. 64). The 



nmm 



64. 65. 



Figs. 64, 65.— Heteroxynema cucullatum. C4, Male, a, and female, 6. 65, Head: a, dorsal view; 



6, ventral view. 



cuticle has a transverse striation. There are three simple lips, one 

 dorsal and two latero-ventral, each bearing a median papilla appar- 

 ently double and with a papilla between the adjacent lips. The 



