Clare Island Survey — Marine Isopoda and Tanaidacea. 43 5 

 Tribe Asellota. 

 Fam. Janiridae. 



Janira maculosa, Leach. — Coastguard Deep, Ballynakill Harbour, 6 fms., one 



specimen. 3J miles N. of Clare Island light, 25 fms., two specimens. 



Carrigeenmore Bocks, Blacksod Bay, shore at low-water spring tides, 



seven specimens. 1| miles S. E. by S. of the Bills, off Achill Island, one 



specimen. 

 Jaera marina (Fabricius). — Common throughout the district, under stones on 



the shore between tide-marks, especially where a stream of fresh water 



enters the sea. 

 J. nordmanni (Bathke). — Usually found associated with the last species, and 



almost ecrually abundant. 



Fam. Munnidae. 



Munna kroyeri, Boeck. — Ballynakill Harbour, twice taken in 7 fms. of water. 



Bonn Harbour, one specimen. 

 M. fabricii, Kroyer. — Ballynakill Harbour, 7 fms., three specimens. 

 Pleurogonium rubicundum, GL 0. Sars. — Coastguard Deep, Ballinakill Harbour, 



7 fms., common. 



Tribe Epicaridea. 

 Fam. Bopyridae. 



Bopyrus squillarum, Latreille. — Ballynakill Harbour, one specimen from 



Palaemon serratus. 

 Bopyrina virbii ( Walz). — Bonn Harbour, one specimen from Hippolyte varians. 

 Pleurocrypta galatheae, Hesse.— Ballynakill Harbour, two specimens from 



Galathea squamifera. 2£ miles S. E. of Clare Island light, three young 



specimens. Feorinyeeo Bay, Blacksod Bay, three specimens from 



Galathea squamifera. 

 Pseudione sp. 1. — Blacksod Bay, 5 fms., two specimens from Porcellana 



longicomis. 

 The only Bopyrid which has up till now been found parasitic on Porcellana 

 longicomis is Pleurocrypta porcellanae, Hesse. The males of this species, as, 

 indeed, of all species belonging to the genus Pleurocrypta, have the abdomen 

 unsegmented. In the specimens now under notice, however, both males have 

 the abdomen markedly segmented. This would seem to place them in the 

 genus Pseudione, Kossmann ; and indeed they bear a strong resemblance to the 



