1855.] 443 



Notices of some Tape Worms. 

 By Joseph LriDY, M. D. 



1. Tae\ta solium, Lin. 



Hah. Occasional in the Anglo-American and in the Negro. I have one speci- 

 men with segments, 6 lines long by 2 lines wide, obtained by Prof. Agassiz, 

 from an Indian of Lake Superior. 



Note Among all the tape-worms from man, which I have seen in this 

 country and I have taken the trouble to examine specimens in many localities, 

 1 have never yet met with the Dibothrium latum, (Botkriocepkalus latus). 



2. Taenia laticephala, Leidy. Head large; acetabula opposite, very pro- 

 minent, large, hemispherical; mouth slightly prominent, unarmed. Neck short. 

 Anterior segments of the body short, oblonsr square ; posteriorly square. Genera- 

 tive apertures marginal, alternate. Protruding penes, elongated conical. Length 

 of one specimen 9 inches, greatest breadth f of aline. Breadth of head i a 

 line ; of neck 1 a line. 



Hab. The small intestine of Ilystrix dorsata. 



3. Taenia sereata, Goeze. Head not broader than the neck, convex ante- 

 riorly : mouth prominent, furnished with a circle of strong hooks. Neck long. 

 Anterior segments transversely oblong or cuneate; posteriorly square. Length 

 of three specimens 9 to 12 inches; greatest breadth 1} lines. Breadth of head 

 i of a line. 



Hab. From the small intestine of an Esquimaux Dog, which was brought 

 from the Arctic regions of North America, by the eminent navigator, Dr. E. K. 

 Kane, TJ. S. N. 



4. Taenia cxcumerina, Bloch. 



Hab. Common in the small intestines of all varieties of our Dogi. 



5. Taevia elliptica, Batsch. 



Hal. Common in the Domestic Cat. 



6. Taenia ckassicollis, Rudolphi. 



Hab. Numerous specimens were obtained from the small intestine of a sin- 

 gle Cat. 



7. Taenia pitsilla, Goeze. 



Hub. Not uncommon in the introduced Norway Rat. 



8. Taenia pectinata, Goeze. 



Hab. Eight fragments from 1 to 4 inches lon<r, with the greatest breadth 1 

 lines, and having cuneate segments, short and broad, were obtained by Mr. 

 Schafhirt from the small intestine of Lepus sylvaticus. 



9. Taenia expansa, Rudolphi. 



Hab. The anterior two feet of a specimen were obtained from the small in- 

 testine of an Ox. 



10. Taenia bacillaris, Goeze ? 



Hub. Several fragments, each almost an inch in length and half a line in 

 breadth, with short and broad cuneate segments, were obtained by Prof. Baird, 

 from the intestines of Scalops aquatieus. 



11. Taenia pestifera, Leidy. Head small, continuous with the neck; aceta- 

 bula terminal and oblique, hardly prominent beyond the outline of the neck, 

 hemispherical ; mouth not prominent, unarmed. Neck long. Segments cuneate; 

 those anterior short and broad, those posterior longer. 



Hab. Three specimens from 1i to 2 inches long, with the greatest breadth 

 two-fifths of a line, were obtained from the small intestine of IWolothrus pecoris 

 by Prof. Baird; and one specimen Ah inches long with the greatest breadth ? of 

 a line was procured from the small intestine of DolicJionyx oryzivora by Mr. 

 Schafhirt. 



