Invertebrate Fauna of the Firth of Forth. 311 



net, off May Island; also off Inchkeith. 

 There appears to be some doubt as to 

 whether the species described by Bate and 

 Westwood is the same as that of Kroyer. 

 Froto ventricosa, ^liill. sp. (P. pedata, B. and W.). 

 Newhaven, not uncommon. 



ISOPODA. 



Tana is vittatus, Kathke. 



May Island and Dunbar, about half tide, 

 living chiefly among mussels. 



Jaera albifro7is, Leach. 



Common at the May Island, Granton 

 Quarry, and probably many other places 

 in the Firth, under stones near high-water 

 mark. 



Idotea linearis (Penn.). 



Occasionally at Newhaven. 



CUMACEA. 



Diastylis laevis, Norman. 



OffFidra, 12 fathoms. 

 According to Dr Norman this is the 

 commonest Diastylis in our seas. The 

 Alauna rostrata of Goodsir is perhaps 

 referable to this species. 



SCHIZOPODA. 



Nyctiphanes {Thysanopoda) Norvegica (M. Sars). 



Many specimens taken in the surface-net, 

 north-east of Inchkeith, 29th November ; 

 one or two in the same locality a few days 

 subsequently. All the specimens small, 

 and many immature. 



Fodopsis Slahberi (Van Ben.). 



This species, not previously recorded from 

 the British seas, was first taken by Mr 

 Cunningham and myself, in the surface- 

 net below Grangemouth, on October 8th. 



