ART. 12 



A NEW LIVER FLUKE FROM A MONKEY — SANDGEOTJND 



dorsal lobe and its supporting dorsal ray. This discrepancy from 

 the present description can be accounted for by the fact that this 

 organ, although it must be constantly present, is inconspicuous. It 

 was only exposed and visible in two of the four male specimens 

 examined. In preparing the description presented above, a number 

 of significant points of divergence were found distinguishing the 

 species from the 12 or more species of the genus Nematodirus, and 

 calling for a reconsideration of the taxonomic status of the worms. 

 One of the most outstanding differences concerns the spicules, which 

 in their filiform shape and membranous union are a constant feature 

 of all other species of Nematodirus. The inclusion of " N. hoplceni" in 

 the genus breaks the natural homogeneity of the spicule character and, 

 particularly if other significant morphological differences could be 

 found to support the action, it would be advisable to remove the species 

 N. Tioplceni from the genus Nematodirus. A comparison of "N. hoplceni" 

 with other described species of Nematodirus provides the following 

 additional points of departure: 



"N.hopkeni" 



other species of Nematodirus 



1. Cuticle of head- 



2. Position of excretory pore 



3. Size of eggs 



4. Shape of tail in female 



5. Dorsal lobe of bursa 



Not inflated 



At level of nerve ring 



73m by 40m- 



Conoid 



Very reduced and 

 simple in outline. 



Inflated. 



Opposite extremity of 

 esophagus. 



95m to 230m by 70m to 

 110m 



Truncated, with termi- 

 nal spikelike process. 



Larger with indented 

 margin. 



These differences ar1& of greater than specific magnitude and war- 

 rant the removal of "N. Tioplceni" from the genus Nematodirus. I 

 propose creating for its reception the new generic name Leiperiatus 

 in honor of the original describer of the parasite. 



Family TRICHOSTRONGYLIDAE 



OSWALDOCRUZIA AGAMAE, new species 



Specific diagnosis. — Oswaldocruzia. 



Male. — Length 7.4 mm.; greatest breadth 0.15 mm. near middle 

 of body from which point there is a gradual tapering toward the 

 anterior end, where the body is 0.03 mm. wide. The head is rounded 

 and bears 4 inconspicuous oral papillae and 2 amphids. The cephalic 

 cuticle is inflated for a distance of about 35/x. The only occurrence 

 of striae on the cuticle is for a short distance behind the cephalic 

 inflation, the cephalic cuticle itself being as devoid of striae as the 

 remainder of the body. The esophagus is 0.34 mm. long, claviform, 

 and encii'cled by the nerve ring, slightly anterior to its middle. A 



