114 RESEARCHES IX HKLMINTHOLOGY AND PARASITOLOGY. 



were obtained 1)\- Professor Wyinan from the heart of a seal, Phoco 

 vitidina . 



Filaria Insignis, Leidy. Body cyhndrical, narrowed posteriori}-. 

 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 

 I foot ; breadth 3-4ths of a line. 



A single specimen was obtained by Professor Wyman from a cyst 

 beneath the integument of the foot of a Raccoon, Procyon lotor. 



Prosthecosader Inflexus, Diesing. 



Prostliecosader AIi7ior, Diesing. 



A large number were obtained from the bronchia and lungs of 

 Delphi 71US phoc(£?ia by Profes.sor W3anan. 



Gordms J'arhis, Leidy. Trans. Amer. Philos. Soc, vol. x, PI. ii, 

 fig. 48. An embryo of this species from Lumbricuhis limosus. 



Ascar Spicu/ioera , Rud. Bod}' 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 tuber- 

 cles on each side. Length of female 8 to 16 lines ; breadth to 3-4ths 

 line ; length of male 5 to 8 lines ; breadth i-3d line. 



From the stomach of Pelicanus avicricamis ; Mr. S. Ashmead, 

 Florida. The crested cormorant (Ca/-/w fl'///)^//^^) ; obtained by Mr. 

 Robert Keunicott, Illinois. 



Ascaris Dcpressa, Rud. From the intestine of Strix nivea. 



Spironoura Gradle, Leidy. From the Axoloti {Siredon 7?iexicanus) . 



[June, 1858. No. 199. See Bibliography.] 



Dr. Leidy, by permission of the Academy, communicated the fact 

 that about one-half of the chrysalides of the canker-worm {Euda/imia) , 

 which had recently proved so destructive to the foliage of our shade 

 trees, were infected by two species of Ichneumon. One of the latter 

 is comparatively large ; and a single individual occupies the body of 

 a canker-worm chrj^salis. The other species is minute, and numer- 

 ous individuals occupy the interior of a chrysalis. 



[May, 1858. No. 212. See Bibliography.] 



Dr. Leidy exhibited a drawing of the Echi)iococais. hominis, com- 

 monly known under the name of hydatid. The specimen from which 

 it was taken was found in a tumor .seated in the muscles of the right 

 iliac region, which had been supposed to consist of impacted faeces 

 in the colon. The patient had been dead several days when the body 



