NOTICES OF IRISH ENTOZOA. 



63 



Art. III. — Notices of Irish Entozoa. By James L. Drummond, 

 M.D., Professor of Anatomy in the Royal Belfast Institution, Pre- 

 sident of the Belfast Natural History Society. 



( Continued from page 662 vol. ii. n. s.) 



Echinorhynchus Hystrix ; Bremser. 

 " Ech. Proboscidis cylindricae parte antica angustata, collo brevi, cor- 

 pore antrorsum crassissimo aculeato, apice caudali tenui subnudo." Rud. 

 ' Syn.' p. 75. 



On Friday, the 9th of November last, I received from my 

 friend Dr. Hopkirk, (now attached as naturalist to the Irish 

 ordnance survey), the bodies of two goosanders, (Mergus Mer- 

 ganser), which had been recently shot. In one of these there 

 were nearly a hundred specimens of Echinorhynchus Hystrix 

 adhering to the intestine, from about two inches above its 

 lower extremity to the distance of a foot and a half higher up. 

 They were very white, and to the naked eye not larger than 

 the head of an ordinary pin ; but after maceration in water, 

 they enlarged in every direction, so as to present the appear- 

 ance shown at a, Jig. 24. 

 24 



(a) appearance of E- 

 chinorhynchus Hystrix 

 when distended and ad- 

 hering to the mucous 

 coat. (6) a detached spe- 

 cimen, magnified, {c) 

 the proboscis, with its 

 large uncinuli. (d) mi- 

 nute aculel on anterior 

 part of the body, (e) 

 form of the animal when 

 un-distended, resem- 

 bling the Patella Hun- 

 garica. (/) magnified 

 view of aspecimenwhen 

 distention has commen- 

 ced, (g) a mature ovum, 

 (h) two immature ova. 



Echinorhynchus Hystrix, Bremser. 



I had often had a difficulty in comprehending what could 

 be the use of the numerous aculei on the bodies of various 

 Entozoa, and though it might seem sufficiently obvious that 

 their final object must be the same as that of the uncinuli of 



