224 Proceedinrjs of the Royal Physical Society. 



This deep-water form is rare in the 

 Firth. 



Cancerid^. 

 Cancer pagnrits (Linn.). 



Firth of Forth {Ed. Mus). 



Common in the laminarian and littoral 



zones. 



PORTUXID^. 

 Carcinns mcenas (Linn.). 



Firth of Forth {Ed. Mus). 



Very abundant between tide marks, and 



in the laminarian zone, but not often found 



in deep water. 

 Fortumnus variegatus (Leach). 



Prestonpans and Portseaton {Howd.). 



We have taken this species at Portobello. 

 P. puber (Linn.). 



We obtained one specimen on the deep- 

 sea lines, from the mouth of the Forth. 

 P. dejpurator (Linn.). 



Firth of Forth {M'B). 



A very common species on the oyster 



banks, and often cast ashore. 

 P. marmoreus (Leach). 



Portobello and Musselburgh beaches 



{Hoivd). 

 P. holsatus (Fabr.). 



Newhaven {Brit. Mus). 



This is the P. lividus of Leach, who found 



one amongst a number of specimens of 



P. depurator at JSTewhaven. 

 P. pusilhos (Leach). 



Off Prestonpans {IToiod); Firth of Forth 



{Brit. Mus). 



Fairly common in the Forth. We have 



very frequently dredged it near Inchkeith, 



etc. 



