252 Dr. O'Bryen Bellingham on Irish Entozoa. 



("Intestines and pyloric appendages 

 of salmon (Salmo Salar). 



3. Bothriocephalus proloscideus*.\ P ^ t $%^utta{ ^ m ° n 



Intestines of Gillaroo trout (Sal- 

 mo Fario, var.). 



Hooper ; le Tcenia large of Cuvier ; and le Bothriocephale de Vhomme 

 of Lamarck. 



The colour of this species is white, seldom however so pure a white 

 as the Tcenia solium. After it has remained in spirits of wine it often 

 acquires a grayish tinge, from which circumstance Pallas gave it the 

 name of Tcenia grisea. 



The head has somewhat an ovoid shape ; the neck is in general 

 not distinct. The articulations of the body are very broad in pro- 

 portion to their length. The orifices which lead to the ovaries are 

 situated in the centre of the flat surface of each articulation, and 

 around them the oviducts are seen, which have a radiated or stellate 

 appearance. In some instances we can distinguish a minute body 

 projecting from the genital pore, which is supposed to be the male 

 organ. 



The Bothriocephalus latus inhabits exclusively the small intestines, 

 and as many as three or four have been found in the same individual. 

 Its length is variable, but is said to be in general greater than that 

 of the Tcenia. It seldom or never parts with single joints (as occurs 

 with the Tcenia solium), owing to the longitudinal muscular fibres 

 being continued from one articulation to another ; in the Tcenia so- 

 lium these fibres are distinct in each articulation. 



The Bothriocephalus latus is not uncommon in the intestines of the 

 inhabitants of Poland, Russia, and part of France. It is so general 

 in some parts of Switzerland as to have received the name ' Ver de 

 Geneve/ It is very rare in England, Germany, Holland, India, 

 Egypt and the United States, where it is replaced by the Tcenia so- 

 lium. The only specimen which I possess is a portion of one found 

 in the intestines of an individual who died several years ago in one 

 of the Dublin hospitals, which was given to me by my friend Dr. 

 Aquilla Smith of this city. I have only heard of two other instances 

 in which it has occurred in Dublin ; once it was met with by the 

 late Dr. Macartney, and once by Dr. Graves, but I have had no op- 

 portunity of examining the specimens in either case. 



* The Bothriocephalus proboscideus is exceedingly common in the 

 genus Salmo ; it is a very beautiful species, and will live for several 

 days after the death of the animal which it inhabits. It abounds 

 most in the largest and fattest salmon. I have found them in such 

 numbers in the intestines and pyloric appendages of the Salmo Salar 

 as almost completely to block up these parts, which contained 

 nothing besides but a white tenacious mucus. The fish in which 

 they were most numerous were amongst the finest in the market ; 

 which would help to prove, that in these animals at least, the pre- 



