PARENCHYMATA. 4rl9 



From the Bothryocephali themselves should be distinguished the 



DiBOTHRYORHYNCHUS, BlaillV., 



Where the summit of the head is provided with two little trunks or 

 tentacula bristled with hooks. 



But a single species is known ; it has a short body and inha- 

 bits the Lepidcpus, Blainv., App. ad Brens., pi. ii, f, 8. 



Floriceps, CllV.f 



Where there are four little trunks or tentacula armed with recurved 

 spines, by means of which they penetrate into the viscera. 



('ertaiu species — Rhynchobothrium, Blainv. — have a long, arti- 

 culated body destitute of a bladder. 



One species is common in the Rays — BothryocepJialus corol- 

 latus, Rud., IX, 12 — that is some inches in length. Its head 

 is the exact resemblance of a flower. 

 In others again — Floriceps proper * — the body is terminated by a 

 bladder, into which it withdraAVS and is concealed. 

 Totrarhynchus, Bud. 



The Tetrarhynchi merely appear to be Floriceps naturally reduced 

 to the head and two joints, instead of having an elongated and pluri- 

 articLilated body. 



T. lingualis, Cuv. Very common in the tongue of the Tur- 

 bot, and of several other fishes f. 



Tentacularia, Bosc, 

 Only differ in consequence of the tentacula being unarmed. 

 Natviralists have also distinguished from the ordinary Taeniae 

 those Avhich, Avith a similar head, that is, one with four suckers, haA^e 

 the body terminated posteriorly by a bladder. Their joints are not 

 as distinctly marked as in the preceding ones. The genus 



Cysticekcus Rud., 



Vulgarly tei-med Hydatids, is composed of those in Avhich the blad- 

 der supports but a single body and one head. They are particularly 

 developed in the membranes and cellulosity of animals. 



C. globosus; Tania feraruvi, T. caprina, T. ovi/la, T. vcrve- 

 cina, T. bovina, T. apri, T. globosa, Gm. ; Goetz., XXII, A, B; 

 Encyc, XXXIX, 1,5. This sjjecies is found in a great number 

 of Quadrupeds, the Ruminantia especially. 



C. pisiformU ; Tcenia cor data, T.pisifornm, T.iitricularis, 

 Gm.; Gcetz., XVIII, A, B ; Encyc, XXXIX, 6, 8. Very com- 

 mon in the Hare and Rabbit. 



C celluloses ; Tania celluloscE, T. Jinna, Gm. ; Blumenb., 

 Abb., fascic. IV, pi. 39. This species is the most celebrated 



* M. Rudolphi has changed this name to Anthocephalus, El., 177. 

 t For this genus, See Rud., Hist., II, 318, and Syn., 129. 



