ENTOZOA. 183 



BREMSEB Ueb. leb. Wiirm. Tab. IV. figs. 18 26. In man, in oxen, 

 and especially in domesticated swine, in which this worm sometimes occurs 

 in great numbers, and even in the heart and eyes (ScEMMERBiNG found this 

 species once in the anterior chamber of the eye in man : since then it has 

 been met with a few times in the conjunctiva) ; mostly in the muscles of 

 voluntary motion, sometimes in the brain 1 . 



Cysticercus fasciolaris RUD. Entoz. Hist. not. Tab. xi. fig. i, BREMSER 

 Icon. Tab. xvn. figs. 3 9 ; this species lives in the liver of rodents, 

 especially of mice and rats. The jointed body is very long and the vesicle 

 at its extremity small, so that the entire worm has the appearance of 

 a Tsenia. It has been surmised, that the Tcenia crassicollis of cats proceeds 

 from the cysticercus fasciolaris of rats. 



Note. The body which SULZEE described as an Entozoon and 

 named Ditrachyceras rude (Diceras RUDOLPHI), previously placed 

 amongst the cystica and then amongst the anthocephala, is nothing 

 else than a carpel of Morus nigra, macerated and deprived of its 

 colour by the action of digestion. 



us 

 Head 



Tetrarhynchus RUD. ( Gymnorhynchus ejusd. ; Anthocephal 

 ejusd. ; Floriceps Cuv. ; Rhyncobothrius BLAINV., DUJAED.) He 

 bilobed, emitting four uncinate proboscides. 



a) With body articulate. (Species of Bothriocephalus RUD., 

 Rhyncobothrius DUJAKD. 



Sp. TetrarJiynchus paleaceus, Bothrioc. tubiceps LEUCK. op. cit. Tab. I. fig. i ; 

 Tetrarh. bicolor, Bothrioc. bicolor NOEDM. Microgr. Beitr. i. Tab. vn. 

 figs. 6io, &c. 



b) With body continuous, elongate (Gymnorhynchus RUD.) 



Sp. Tetrarhynchus reptans, Scolex gigas Cuv., BREMS. Icon. Helm. Tab. xi. 

 figs. 10 13, Tab. xvn. figs, i, 2. 



c) With body short, clavate, supplied with two bipartite bothria 

 (Tetrarhynchus RUD.) 



Sp. Tetrarhynchus tnegacephalus RUD. Entozoor. Syn. Tab. II. figs. 7, 8 ; 

 Tetrarh. discophorus BREMS. Icon. Helminth. Tab. xi. figs. 14, 15, &c. 



d) With body terminated posteriorly by a bladder, and in- 

 cluded in a cyst (Anthocephalus RUD., Floriceps Cuv.) 



Sp. Anthoceph. elongatus Cuv. R. Ani. (ddit. i.) PI. xv. figs, i, 2, RUD. Ento- 

 zoor. Syn. TAB. in. figs. 12 17, Bothrioceph. patulus LEUCK. 1.1. Tab. n. 

 figs. 29, 30. Lives in the mesentery of Agathoriscus mola. 



1 Comp. I. C. STEINBUOH, De Tcenia hydatigena anomala. Erlangae, 1801, 8. 



