136 RESEARCHES IN HELMINTHOLOGY AND PARASITOLOGY. 



cephalic end at mouth i - 1 2th ram. ; a short distance below i-5th mm. ; 

 middle of body 3-8ths mm.; near caudal end i-4th mm.; mucro 

 I- 1 2th mm. long, i-8oth mm. thick. 



From an Australian wombat, which recently died at the Zoological 

 Garden, Prof. Leidy had obtained from the stomach two .specimens 

 of a tapeworm of the genus Ticnia. They are three inches long, and 

 about four lines broad at the last joint. The characters are as fol- 

 lows : Entire worm elongated and compressed pyramidal. Head 

 quadrate, narrowing below, convex above, furnished laterally with 

 four prominent hemispherical bothria. Neck short, constricted. 

 Segments of the body very short and wide, campanulate with the 

 projecting points, giving the body laterally a serrated appearance. 

 From the intermediate joints a narrow conical papilla protruded 

 from each side of the same joint, but none could be made to protrude 

 from the back joints, from which globular white ova were expressed 

 measuring 0.052 mm. diameter. Head 3-4ths of a line in breadth. 

 One inch from the head six segments occupied the space of a line ; 

 at the posterior part of the body four segments occupied the same 

 extent. The species appears not to have been previously described, 

 and may therefore be named Teeiiia bipapUlosa. 



[February, 1875. No. 418 See Bibliography.] 



Notes on Some Parasitic Jlorms. — Dr. Leidy exhibited some nema- 

 toid worms, on which he made the following remarks : 



One of the species is common in feline animals and is the Ascaris 

 viystax. The specimens, consisting of fifteen females and five males, 

 had been sent to Dr. Chapman by Mr. Thompson, superintendent 

 of the Zoological Garden, who reports that they had been passed by 

 the American wild-cat. The females measure from 2yz to 4 inches 

 in length by 2-5ths to 2-3ds of a line in thickness. The males 

 measure from 2^ to 2}4 inches in length by i-3d to >^ a line in 

 thickness. The specimens are larger and the alae of the head pro- 

 portionally better dev^eloped and therefore more conspicuous than 

 in those noticed at the previous meeting as having been passed by 

 the Bengal tiger. The worms of the tiger are such as have been 

 described under the name of Ascaris /eptotera, which appears to be 

 only a variety of A. mystax. 



The other worm is a Filaria, apparently an undescribed species. 

 Half a dozen individuals of the two sexes were obtained from the 

 peritoneal cavity of an Australian Whallabee, which recently died 

 in the garden of the Zoological Society. The characters of the 

 para.site are as follows : 



