112 
PROCEEDINGS OF THE ACADEMY OF 
length, by 1| to 2 lines thick, white and soft. Head oval ^ inch long by | 
wide. Tail end obtnse. 
Fjlaria solitaria, Leidy : Syn. of Entozoa, Pr. A. N. S. viii. 56. 
Agamonema papilligerum ? Diesing, Leidy : Ibid. 55. 
Filaria quadritiiberculata, Leidy : Ibid. 56. In error, described posteriorly 
foremost, 
? Filaria nitida, Leidy : Ibid. 56. Probably the young. 
"Body cylindrical, slightly narrowed towards the extremities, rose-red in 
G^olor. Head snb-acute ; mouth with two series of four or six minute, conical, 
pointed papillae. Caudal extremity obtuse ; anus terminal, transverse, ellip- 
tical, bordered by a prominent lip. Length up to 6 inches ; breadth to |- a 
line. 
A not unfrequent position for this worm, of full size, is beneath the skin of 
the back of Rana pipiens. Found also in the peritoneum and abdominal mus- 
cles of Chelonura serpentina, not unfrequently in the muscles of the Eel, 
Murcena macrocephala, of the Delaware river. In the peritoneum of Emi/s 
serrata, and Esox reticulatus. 
(Esophagus tortuous, white, one-sixth the length of the body ; intestine 
straight or slightly tortuous, translucent. 
This parasite is most frequently found during the winter and spring. It is 
generally bright rose-red in color, with the extremities tinged more deeply red. 
Fjlaria spirocauda, Leidy. 
Body long, filiform, most narrowed posteriorly. Head obtuse, unarmed : 
moutli a minute circular pore, neither armed nor labiated. Tail short, conical, 
rather obtuse, or subacute ; anus just above the tail. Caudal extremity of 
female recurved ; of male wound into a spiral of three or four turns. Length 
of female 6 to 8 inches, breadth ^ of a line ; length of male 4 inches, breadth 
1 -5th of a line. 
Seven females and four males were obtained by Prof. Wyman from the heart 
of a seal, Pkoca vitulina. 
Filaria insignis, Leidy. 
Body cylindrical, narrowed posteriorly. Head obtuse ; mouth quadrate 
ovoidal, with a brownish papilla above and below it, and two almost obsolete 
ones on each side. Caudal extremity abruptly attenuated into an unciform 
tail. Length 1 foot, breadth f of a line. 
A single specimen was obtained by Prof. Wyman from a cyst beneath the 
integument of the foot of a Raccoon, Procyon lotor. 
Pkosthecosacter inflexus, Diesing. 
Prosthecosacter minor, Diesing. 
A large number were obtained from the bronchia and lungs of Delphinns 
phoccena by Prof. Wyman. 
(tordius varius, Leidy. 
Trans. Amer. Philos. Soc, vol. x., pL H, fig. 48. An embryo of this species 
from Lumbriculus limosus. 
ASCARIS SPICULIGERA, Rud. 
Body narrowed anteriorly, inflexed ; head naked ; tail short, conical, acute. 
Mouth with large prominent lips. Caudal extremity of the male furnished 
with a row of minute tubercles on each side. Length of female 8 to 16 lines ; 
breadth to | line ; length of male 5 to 8 lines ; breadth ^ line. 
From the stomach of Pelicanus americanus ; Mr. S. Ashmead, Florida. The 
crested cormorant {Carlo dilophus) ; obtained by Mr. Robert Kennicott, Il- 
linois. 
ASCARIS DBPRESSA, Rud» 
From the intestine of Strix nivea . 
Spironoura gragile, Leidy, 
From the Axolotl (Siredon mexicanus) 
[April, 
