BRITISH STALK-EYED CRUSTACEA. 71 



encrusted rocks, P. longicornis was just as invariably found on 

 smoother rocks, generally boulders of pinkish syenite, on which 

 it was well protected by its similarity in colour. 



Suborder Macroura. 

 Galathea squamifera, Leach. 



We now approach the Lobster type of Crustacea, although 

 this genus, from its remarkable characteristics, is included in the 

 Anomoura by Prof. Bell. 



The carapace and abdomen vary much in size ; but Bell states 

 that specimens have been obtained three inches in length, the 

 usual size, however, is below this. 



The carapace is flattened, ribbed laterally, and armed on either 

 side with spines pointed forwards, terminating in three long spines 

 forming the rostrum ; the abdomen is formed of wide segments, 

 terminating in a broad telson, fringed with setse. The anterior 

 pair of legs are long, equal, and partly spinous, the flat surface 

 however, being covered with scale-like processes, from which it 

 obtains its name. The next three pairs are scaly and hairy, 

 armed with hooked claws at the extremities; the fifth pair are 

 rudimentary, and appear to be used as brushes or cleaners. 



The colour of this species is generally of a dull brown, 

 but Bell states that he obtained some from Bognor of a reddish 

 tinge. 



It is a common frequenter of lobster-pots, Bognor being 

 mentioned (and found by us) to be a good locality for it. Large 

 numbers were thrown up on the Sussex coast by the great storm 

 of January 18th, 1881. It has also been recorded from Cornwall, 

 Devonshire, Dorsetshire, and all parts of the coast of Ireland. 



It is not a deep-water species, being often found at low tide, 

 and we have dredged it at three fathoms. 



Galathea strigosa, Fabr. 



Although this species much resembles the former, it would 

 perhaps be as well to describe it generally, instead of referring 

 only to those points wherein it differs from G. squamifera. 

 It often attains a length of four inches, and its first pair of 

 legs being about the same length as the carapace and abdominal 

 somites, cause it to appear larger even than this. 



