47 



ilciiticiilation along both anterior and lateral borders (some- 

 what variable in the clearness of denticnlation in dill'erent 

 individuals). 1'ulpa (Fig. H) shows an unpaired median 

 lobe arising from base for one-third the length of lip; the 

 paired loin's lobulate (anterior and lateral, each broad and 

 subdivided as in drawing). Saddle-groove fairly deep. 

 Inferior lips narrower and more digitate (Fig. 4), and more 

 closely following Schneider's description for dorsal lip 

 i .\finatixlcn, Berlin, IMili, p. 39). 



Tail of male (Fig. 7) incurved or often tightly enrolled, 

 without cuticular expansions, terminating in a short cone 

 (as wide at level of cloaca as it is long from this level), ending 

 in a small cuticular spicule. Cloaca 0.18 mm. from tip of 

 tail. Ventral surface of tail of male slightly flattened. 

 Twenty-seven pairs of caudal papilla- (Fig. 6), of which 7 

 are postcloacal. Of the postcloacal, 3 are lateral, small 

 and conical, and likely to be overlooked, near the end of the 

 tail; Nos. 4 and 5 are also small conical ones, at border of 

 flattened ventral surface; Nos. 6 and 7 and all the precloacal 

 papilla- appear as small tips set upon a rounded eminence. 

 They gradually increase in size anteriorly and are set in a 

 regular row, succeeding Nos. 4 and 5 along the margin of the 

 flattened ventral surface of tail. Spicules of male equal, 

 small. 



Tail of female (Fig. 8) a slender cone more than twice as 

 long as the transverse diameter at level of anus; anus 0.7 mm. 

 from tip. Tail straight or occasionally lightly enrolled. 

 Vulva 5 m. from anterior end (length of worm used for 

 measurement, 7.4 cm.); vagina short, dividing into two uterine 

 canals with long plicated ovarian tubes, ranging posteriorly 

 and anteriorly (anterior to vulvar level). Ova nearly 

 spherical to oval in shape, smooth externally, and without 

 markings on shell, thick-shelled, containing larva-, measur- 

 ing from 65 to 80 micromillimeters in diameter for the 

 spheroidal examples, and for the oval ones from 75 to 85 

 in length and from 55 to 75 micromillimeters transversely 



