ENTOZOA. 183 
Bremser 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 (S@MMERRING 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!. 
Cysticercus fasciolaris Rup. Lntoz. Hist. nat. Tab. x1. fig. 1, BREMSER 
Icon. Tab. xv. 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 Tenia, It has been surmised, that the Tenia crassicollis of cats proceeds 
from the cysticercus fasciolaris of rats. 
Note-—The body which Suuzer described as an HYntozoon and 
named Ditrachyceras rude (Diceras Rupourut), 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. 
Tetrarhynchus Rup. (Gymnorhynchus ejusd.; Anthocephalus 
ejusd.; Hloriceps Cuv.; Rhyncobothrius BLAINY., Dusarp.) Head 
bilobed, emitting four uncinate proboscides. 
a) With body articulate. (Species of Bothriocephalus Rup., 
Rhyncobothrius Dusarp. 
Sp. TZetrarhynchus paleaceus, Bothrioc. tubiceps LEUCK. op. cit. Tab. I. fig. 1 ; 
Tetrarh. bicolor, Bothrioc. bicolor NorpM. Microgr. Beitr. 1. Tab. vu. 
figs. 6—10, &e. 
b) With body continuous, elongate (Gynmorhynchus Rup.) 
Sp. Tetrarhynchus reptans, Scolee gigas Cuv., Brems. Icon. Helm. Tab. xt. 
figs. 1o—13, Tab. Xvit. figs. 1, 2. 
c) With body short, clavate, supplied with two bipartite bothria 
(Tetrarhynchus Rup.) 
Sp. Zetrarhynchus megacephalus Rup. Entozoor, Syn. Tab. 11. figs. 7, 8 ; 
Terarh. discophorus Brems. Icon. Helminth. Tab. Xt. figs. 14, 15, Ke. 
d) With body terminated posteriorly by a bladder, and in- 
cluded in a cyst (Anthocephalus Rup., Floriceps Cuv.) 
Sp. Anthoceph. elongatus Cuv. R. Ani. (édit. 1.) Pl. xv. figs. 1, 2, Rup. Ento- 
zoor. Syn. TAB. 1. figs. 12—17, Bothrioceph. patulus Leuok. 1.1. Tab. 11. 
figs. 29, 30. Livesin the mesentery of Agathoriscus mola. 
1 Comp. I. C. Sternpucu, De Tenia hydatigena anomala, Erlang, 1801, 8. 
