256 Dr. O^Bryen Bellinghain on Irish Entozoa. 



n -ri 1 • I J . ± f Small intestine of redbreast (Sylvia 



2. Echinorhynchus transversus^ S tj i ? \ 

 •^ Kuoecula). 



"Intestine of cod (Gadus Morrhua). 



Intestine of pouting ( Gadus Luscus) . 



Intestine of whiting {Merlangus vul- 

 garis) . 

 AX. J Intestine of whiting-pollach (Mer- 



■ ■ ■ ) langus Pollachius). 



Intestine of coal-lisli {Merlangus 

 Carbonarius) . 



Intestine of conger-eel {Anguilla 

 Conger) . 



anteriorly than posteriorly ; in some (from the intestine of the eel) 

 this is so much the case that they might be mistaken for the Echin. 

 glohulosus, if the size and shape of the proboscis did not distinguish 

 them. 



The specimens of this species which occurred in the rudd and 

 stickleback are more equally attenuated at each extremity than those 

 which I found in the perch and eel ; and the Echin. angustatus, which 

 inhabits the intestine of the gudgeon, resembles in every particular 

 that which occurred in the perch. 



* The colour of the Echinorhynchus transversus is a dirty white ; 

 the body is nearly cylindrical, three lines in length, a little thicker 

 anteriorly than posteriorly ; the proboscis is linear, cylindrical, three- 

 fourths of a line in length, armed with numerous rows of recurved 

 hooks, and is placed obliquely or transversely on the body ; the pos- 

 terior extremity of the body of the female is obtuse ; in the male it 

 terminates in a large globular pouch, which has a whiter colour than 

 the other parts of the body. 



t I have little to add to the excellent description of the Echino- 

 rhynchus Acus which has been given by my friend Dr. Drummond (so 

 long the distinguished President of the Belfast Natural History So- 

 ciety) in the ' Magazine of Nat. History.' I have met with this spe- 

 cies more frequently in the whiting-pollach than in any other fish, 

 and they are more common in young cod than in the full-grown ani- 

 mal. When first removed from the intestine they are thick, rugose, 

 and of a yellowish colour ; after remaining for a short time in fresh 

 water they become white, straight and turgid ; the body is thicker 

 anteriorly than posteriorly ; at the posterior extremity is a minute 

 yellowish spot ; the proboscis is cylindrical and comes off obliquely ; 

 there is no neck. After remaining in fresh water for a time, some 

 specimens ruptured near the head and an immense number of ova 

 were discharged ; these have an elliptical shape, the parietes trans- 

 parent ; within each is the outline of another body nearly of the same 

 shape, but prolonged more at the extremities, and with some dark 

 spots in the centre. 



