400 Dr. O'Bryen Bellingham on Irish Entozoa. 



3. Anthocephalus paradoxus f Cysts in peritoneum of twxhot^Pleu- 

 (Dr. Drummond) . . . . \ ronectes maximus). 



Species dubicc 



-Cyst 

 ri 

 4. Anthocephalus . . < 



("Cysts in abdomen of hake (Merluccius vulga- 

 ris). 

 Cysts in abdomen of gray gurnard (Trigla gur- 



Cysts in abdomen of red gurnard (Trigla Pini). 

 ' Cysts in abdomen of holibut (Hippoglossus 



vulgaris). 

 Cysts in abdomen of haddock (Gadus JEglefi- 



nus). 

 Cysts in abdomen of whiting-pollach (Mer- 



langus Pollachius). 

 Cysts in abdomen of coal-fish (Merlangus Car- 



5. Anthocephalus* 



6. Anthocephalus . . < 



h . , ,7 /Cysts in abdomen of conger-eel (Anguilla 

 Conger), 



flattened than cylindrical, nearly of the same diameter throughout, 

 and dotted towards the caudal vesicle with very minute opake spots. 

 In the posterior half of the body two opake bodies could be seen 

 through the parietes, which were cylindrical, rounded posteriorly, 

 and lay parallel to each other ; each appeared to terminate anteriorly 

 in a whitish narrow cord which ran somewhat spirally towards the 

 head. The caudal vesicle varied in shape, in some specimens being 

 as long as the head and proboscis^ together, in others shorter and 

 broader ; its diameter was greatest where it joined the body, and it 

 was also dotted all over with very minute opake spots. 



• * In the month of November 1838 I found a number of cysts in 

 the mesentery, peritoneum, and under the peritoneal coat of the 

 liver of the holibut (Hippoglossus vulgaris), upwards of three-quarters 

 of an inch in length ; these contained other cysts, on making an in- 

 cision into which, an Anthocephalus was protruded from each, which 

 moved sluggishly in water for a short time. The longest measured 

 nearly half an inch, the shortest three lines. 



With some difficulty I was able to examine the head, which is not 

 unlike that of the Anthocephalus macrourus in outline, but differed in 

 having only two bothrii, which were deep and of an oval shape ; from 

 each two slender tentacula were protruded, which were armed as in 

 the other species, and through the parietes they were seen to be 

 continued backwards and spirally twisted. The head is tetragonal, 

 the neck cylindrical, and within it the head can be retracted. The 

 body cylindrical, apparently articulated in some, while in others no 

 trace of articulation existed ; its parietes translucent. The rest of 

 the animal granular and opake. 



