938 PROCEEDINGS OF SOCIETIES. 
mode of development seen in the hydatids derived from Tenia 
Echinococcus. There are some other minute points, on which I am 
not at present prepared to dwell; these may reasonably stand 
over for future investigation. The little drawing, of which the wood- 
cut is a copy, lent by Mr. Rose, and representing his Ccenurus 
(called C. Cuniculi in his MS., but not so named in his published 
papers), is not unlike some of the Cenuri from the American 
Squirrel, and it is not improbable that it may represent the larval 
condition of one and the same Tenia. What species of Trenia 
this may happen to be I do not care to conjecture, but I 
think it may be safely affirmed that it is not the Tenia Cenurus 
of authors. 
