RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 1 89 



Filaria obtiinsa. — Bod-' cylindrical, nearly uniform, head conical, 

 obtusely rounded, or rounded truncate, smooth ; mouth a minute 

 central pore, devoid of lips, papillae, or internal armature ; caudal 

 end of female straight, conical, obtusely rounded, devoid of papillae ; 

 of male abruptly narrowed, a length about equal to the breadth of 

 the body, nipple-shaped, obtusely rounded and devoid of papilla. 

 Female genital aperture near the head end. Male aperture terminal : 

 penis of a longer curved spicule and a spiral one of half the length. 



Female 4 inches or more long, 0.625 mm. wide. Male 2 inches 

 long, 0.5 mm. wide. Abundant in the visceral cavity of the snow 

 bird, Junco hyemalis =^ F. obtiisa, Leidy, P. A. N. S., 1885, 10. In the 

 meadow lark, Sturnclla Diagna =^ F. obtusa, ibidem, Chester Co., Pa. 



Many specimens from the visceral cavity of the meadow lark in 

 the collection of the Army Medical Museum, Washington. Female 

 from 4I2 to 7}^ inches long, mostly 6 inches; width 0.625 mm. 

 Male 2)2 to 3^^ inches. 



Four females and a male from the crow black bird, Ouiscalus pur- 

 pureiis. They are proportionately more robust than the preceding. 

 Female 4 inches long and 0.875 wide. Male i '4 inches long and 

 0.5 mm. wide. Florida. Dr. B. H. Warren. 



I at first viewed this species as the Filaria obtusa, Rudolphi 

 (Diesing, Syst. Hel., ii, 267). The caudal extremity of the male, 

 with its penal armature, accords with Dujardin's figure of that species 

 (Helminthes, Pt. iii, fig. j, 2). In i^. obtuiisa I can detect no buccal 

 armature such as exists in F. obtusa, according to Dujardin ; and 

 later, Molin (Versuch einer Monographic der Filarien, Sitzungsb. 

 Wien. Akad. Wis., 1858, 397). 



Filaria cirrura. — Body cylindrical, nearly equal, cephalic end 

 conical, rounded truncate, smooth ; mouth a minute funnel-like orifice 

 without papillae or interior armature ; caudal end of female slightly 

 curved or nearly straight, conical, obtusely rounded, without append- 

 ages ; of male closely rolled inward, conical, blunt, without alae or 

 papillae ; penal spiculae strongly curved, with the points projecting 

 from the prominent genital aperture situated above the tail end. 



Length of female 16 mm., breadth 0.5 mm. Length of male 

 10 mm., breadth 0.375 mm. 



Four females and two males from the orbit of the jackdaw, Oicis- 

 caliis major. Florida. Dr. B. H. Warren. 



Filaria nodulosa, Rudolphi. Diesing, Syst. Hel., ii, 274. Body 

 cylindrical, nearly uniform, slightly more narrowed behind. Head 

 conical, obtusely rounded, with a circle of minute tubercles. Caudal 

 extremity of the female straight, conical, obtu.se ; of the male 



