18G2.] DR.T. S. COBBOLD ON HUMAN ENTOZOA. 307 



Eight-and-forty days subsequent to the feeding (i. e. reckoning from 

 the earhest days of alimentation, for tlie feedings were continued at in- 

 tervals up to the eighteenth day) Prof. Leuckart extirpated the left 

 cleido-mastoid muscle, and whilst performing the operation had the 

 satisfaction of seeing the cysticercus-vesicles lodged within the 

 muscles. They were larger and more opalescent than those of Oys- 

 ticerciis {Tcenice) cellulosce, but, nevertheless, permitted the recogni- 

 tion of the young worms through their semitransparent coverings. 

 The heads of the contained cysticerci exhibited all the distinctive 

 peculiarities presented by the head of the adult strobila {Tcsnia mC' 

 diocanellata) ; and thus, taking the results of this experiment in 

 connexion with previously ascertained facts, we are supplied with the 

 most unequivocal evidence that man becomes infested by this second 

 form of Tapeworm by eating imperfectly cooked veal and beaf. In 

 all probability, other animals are not liable to harbour the Cysticercm 

 ttsnicB mediocanellatcB ; for Leuckart also tried to infect a sheep (to 

 which he administered about sixty proglottides) ; but, on examining 

 the flesh after the lapse of eight weeks, he failed to detect the pre- 

 sence of a single cysticercus-vesicle*. 



23. T^NiA ACANTHOTRiAS, "Weiuland. 



T. (Ci/sticercus) acanthotrias, Weinl&nA, Moquin-Tandon, Leuck- 

 art. 



Acanthotrias, Weinland. 



The specific distinctness of this new Tapeworm is founded on the 

 examination of several cysticerci, " preserved in the Collection of 

 the Medical Improvement Society, Boston, and in the Anatomical 

 Museum, Cambridge, U. S." From twelve to fifteen of these cysts 

 were found by Dr. Jeffries Wyman (1845) in the muscles of a woman 

 about fifty years of age — a dissecting-room subject at Richmond, Va. 

 Dr. Weinland, of Frankfort, during his stay in America (1858), on 

 carefully examining one of these cysticerci, made the very curious 

 and, in some respects, unique discovery that its rostellum was fur- 

 nished with three rows of hooks, fourteen in each, the hooks them- 

 selves presenting the usual characters. Dr. Weinland proposes to 

 elevate this species as the type of a new genus {Acanthotrias) ; but 

 unless the (yet to be discovered) strobila displays other characters 

 differing from those of ordinary Tapeworms, it is, perhaps, better to 

 retain it among the Tcenice. 



24. T^NiA FLAVOPUNCTA, Weinland. 



T. flavopuncta, Weinland, Moquin-Tandon. 

 ? T. flavomaculata, Molin. 

 Hymenolofis flavopuncta, Weinland. 



The existence of this worm as a distinct species is also due to the 



* Since the above was written, I have received from Mr. Frederick Turner, of 

 265 Fern Bank, Glossop Eoad, Sheffield, a finely preserved Tapeworm-head for 

 examination. " It was from a veiy long worm," and is undoubtedly referable to 

 Tcenia mediocanellata, as the Society will perceive by inspection. 



