308 PROCEEDINGS OP *flE ACADEMY OP [1886. 



NOTICES OF NEMATOID WORMS. 



BY PROF. JOSEPH LEIDY. 

 Filaria scapiceps. 



Body cylindrical, nearly equally tapering at the ends. Cephalic 

 extremity abruptly narrowing, cylindric, rounded at the summit 

 and smooth. Mouth a terminal pore without labia, papillfe or 



inner armature. Caudal extremity 

 of female nearly straight, conical, 

 obtusely rounded, smooth, without 

 appendages ; of the male curved, 



Side view of the caudal extremity of conical, obtusely rounded alatc and 

 the male. 125 diameters. papillate ; alse half oval ; papillae 



five pairs, pyriform, successively decreasing to the last at the 

 end of the tail. Genital aperture opening between the ante- and 

 penultimate papillae ; penal spicules short, curved. 



Female 25 to 30 mm. long; 0*75 wide at middle; head O'ltS 

 wide. Male 12 mm. long ; 0-'6lb wide at middle. 



Eight females and five males were obtained from beneath the 

 skin of the hind foot of a rabbit, Lepus sylvaticus. 



Filaria obtunsa. 



Body cylindrical, nearly uniform ; head conical, obtusely 

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

 pore, devoid of lips, papillje, or internal armature ; caudal end of 

 female straight, conical, obtusely rounded, devoid of papillse ; of 

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

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

 Female genital aperture near the head end. Male aperture ter- 

 minal ; penis of a longer curved spicule and a spiral one of half 

 the leligth. 



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 kyemalis.^= Filaria obtusa, Leidy, Pr. A. N. S., 

 1885, 10. 



In the meadow lark, Sturnella magna. = F. obtusa. Ibidem. 

 Chester Co., Pa. Obtained by Dr. B. H. Warren. 



Many specimens from the visceral cavity of the meadow lark 

 in the collection of the Army Medical Museum, Washington. 



