PULMOGRADA. 449 



Genus Obelia. 

 O. vitrea, Penn. (sp.). 

 North of Ireland. 



In middle of July, 1847, I saw a few at Holy wood, the largest about 

 12 inches in diameter : they were pure hyaline, with a rich brown spot 

 in the centre, and rays of the same colour nearly reaching the margin. 



Genus OcYROE. 

 f O. cruciata, Temp. 

 North of Ireland. 



Genus Chrys.^oka. 

 C. tuherculata, Penn. (sp.). 



"This and the preceding are badly observed species," Prof. E. 

 Forbes. 



Genus AuRELiA. 

 " A. aurita, Linn. (sp.). 



" North, West, and East coasts," Prof. E. Forbes. A species so called 

 has been before noticed as Irish, but as more than one has passed under 

 the name, the true species according to Prof. Forbes is here repeated. 



Co. Down, Bangor, July 4th, 1846, G. C. H. and W. T. A. nurita. 

 Of all sizes in profusion. We watched their graceful motions in a deep 

 pool for a long time, with extreme interest. 



July 20th, 1849.— A N. W. wind has been blowing for the last two days, 

 and has been the means of the greatest number of these being thrown 

 ashore at Holywood Warren that ever I saw. A quarter of a mile of the 

 beach, or so far as I walked, and for about twelve yards in breadth from 

 low-Avater mark inwards, has fully one-fifth of its entire surface covered 

 with them. 



Middle of July, 1847, a great number on the beach at Holywood 

 Warren. 



End of July, I did not see one there. 



" A. hilohata, Forbes MSS. Portrush." 

 Prof. E. Forbes. 



Genus Rhizostoma. 



R. Cuvierii, Blainv. 



Belfast, Auffust 6, 1838. — I received a fine specimen of this Medusa 

 from Edmund Getty, Esq., whose attention was called to it yesterday by 

 an old fisherman seventy years of age, who stated that " a large starfish, 

 he had not seen the like of before," was lying on the beach near HolyAvood 

 (Belfast Bay). The specimen exactly accords with Blainvillc's figure of 

 R. Cucierii and with the Med. undulata of Borlase, as quoted by Pen- 

 nant and Fleming. Its total length is 18 inches, the body 7^, and thence 

 to extremity of peduncles 1 0^ inches ; entire outer surface of the body, 

 which is 12 inches in diameter, granulated over like the rind of an orange 

 or lemon. The body is almost hyaline, with a very slight tinge of dusky 



2 G 



