NOTICES OF IRISH ENTOZOA. 227 



those which were so fortunate as to reach the opposite bank 

 were so wet and fatigued, that the boys stationed there with 

 clubs found no difficulty in securing them alive or in killing 

 them. Their migrations on that occasion did not, as far as I 

 could learn, extend farther eastwardly than the mountains of 

 Vermont ; many remained in the county of Renssellaer, and 

 it w r as remarked that for several years afterwards the squirrels 

 were far more numerous than before. It is doubtful whether 

 any ever return westwardly, but finding forests and food suit- 

 ed to their taste and habits, they take up their permanent re- 

 sidence in their newly-explored country ; there they remain 

 and propagate their species, until they are gradually thinned 

 off by the effects of improvement, and the dexterity of the 

 sportsmen around them. 



( To le continued.) 



Art. IV. — 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 p. 71.) 



Anthocephalus rudicornis, Drum. 



When about to send a communication to the ' Magazine of 

 Natural History,' relating to some more of the Echinorhyn- 

 chi, a fish, which in this part of the world is of rare occur- 

 rence, appeared in the Belfast market ; namely, a halibut, 

 (Hippoglossus vulgaris), which weighed 120 tbs. My indefa- 

 tigable friend, Wm, Thompson, Esq., secured the viscera, at- 

 tached to which I found a great number of tumors containing 

 Entozoa ; and, as much of this field of Helminthology re- 

 mains to be explored, while every fact pertaining to it is of 

 importance, I have thought it better to put on record the few 

 observations I could make on the present species, than for- 

 ward the remarks I had to offer respecting others already well 

 known. 



In the alimentary tube there was not an Entozoon of any 

 description, but ample amends were made for this by the 

 luxuriant crop on its external surface. The stomach, liver, 

 spleen, mesentery, and intestines were everywhere studded 

 with almost innumerable white or cream-coloured tumors, 

 from the size of a large pea down to that of a grain of clover 

 seed ; while, at the same time w r ere seen, under the transpa- 

 rent peritoneal coat of these viscera, numerous Nematoidea 

 coiled up in spires. 



