4 PEOCEEDINGS OF THE NATIOXAL MUSEUM vol. 67 



more than semicircular in shape. The postero-lateral ray is thicker 

 than the medio-lateral ray. All the rays Avith the exception of the 

 dorsal ray are more or less sharply pointed at the ends and do not 

 reach the margin of the lobes. The terminal portion of the dorsal 

 ray is bifurcated, each branch being tridigitate. The spicules are 

 slender and tubular from 738 to 828;j, long and terminate in finely 

 pointed ends. The gubernaculum is an elongate slender structure 

 about 90[JL long. 



Female. — The females are from 7 to 11 mm. long by 308 to 324[i 

 wide. The position of the vulva corresponds approximately to the 

 beginning of the posterior third of the body. The distance from the 

 anus to the tip of the bristle that is inserted in the end of the bluntly 

 rounded tail is from 180 to 234[x (fig. 3). The eggs are from 71 to 

 76/x long by 41 to 46/* wide. 



Host. — Procyon lotor. 



Location, — Duodenum. 



Locality. — Prince Georges County, Maryland. 



Type specimen. — U. S. National Museum. Helminthological Col- 

 lections No. 26070. 



REFERENCES TO LITERATURE CITED 



Baylis, H. a. and Daubney, R. 



1923. — A furtlier report on parasitic uematodes in the collection of the 

 Zoological Survey of India, Rec. Indian Mus., Calcutta, vol. 25, 

 pt. 6, Dec, pp. 551-578, figs. 1-20. 

 MoLiN Raffaele. 



[1861a]. — II sottordine degli acrofalli ordinato scientificamente seconde i 

 risultamenti delle indagini anatomiche ed embriogeniche, Mem. 

 r. 1st. Veneto di sc, lett. et arti, Venezia (1860), vol. 9, pp. 

 427-633, pis. 25-33. 

 Stossich, Michele. 



1899d. — Strongylidae. Lavoro monografico, Boll. Soe. adriat. di sc. nat, in 

 Trieste, vol. 19, pp. 55-152. 



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