ISOPODA. 405 



Genus EURYDICE. 

 E. pidchra, Leach. 



This pretty species has been taken at Larne by Mr. R. Patterson (1838). 

 and at Carrickl'ergus, between tide-marks, by Mr. Hyndman (March and 

 April). Bantham, Devon, the original locality (Leach, Linn. Trans., xi. 

 370), appears to be the only one yet noticed for E. jmlchra. 



Genus JEga. 

 ^. bicarinata. Leach. 

 March 30, 1839. I procured an individual of this species alive in Bel- 

 fast market, whither it was brought with oysters fx'om Carrickfergus. It 

 was not known to Dr. Leach whence the specimen was brought that 

 served for his description, and the works accessible to me in which the 

 species is introduced do not contain any information as to its habitat. 



^. tridens, Leach. 

 North of Ireland. 



Geyms BoPYRUS. 

 B. squillarmn, Latr. 

 A Palcemon serratus, taken by Dr. Ball at the South Islands of Arran, 

 off the coast of Clare, in June, 1835, contained within the plates of the 

 head a fine specimen of this Boj)ynis, Q^ lines in length, and agreeing 

 Avith the female as represented by Desmarest and other authors. 



B. hyppolytes, Kroyer. 



Two females of this species were found within the carapace of the Hip- 

 jiolyte vanans, Leach, which I obtained on the coast of Galway in July. 

 1840. M. Kroyer found it on the Hippolyte polaris. 



B. galatea, Thompson. 

 South of Ireland, J. V. Thompson ]\tSS. West of Ireland, Dr. Ball. 



THIRD LEGION— BRANCHIOPODA. 

 ORDER PHYLLOPODA. 



Genus APUS. 



A. cancriformis, Latr. 



North of Ireland " in stagnant waters." Templeton MSS. 



Genus Branciiipus. 



B. stuijiMlis, Latr. 



" In a pond along witli Daphnia jyulex" Templelon MSS. 



Genus Nkbalia. 

 N. hipes. Fabr. ' 



Clifden and Roundstone. 



