78 HISTORY OP BRITISH CRUSTACEA. 
Pagurus Thompson^ Bell. — The whole of the legs hispid 
and spinous, anterior pair unequal ; the wrist as long as the 
hand ; eye-stalks extending to half the length of the last 
joint of the peduncle of the outer antennae ; spine of an- 
tennae curved outwards, and furnished with a row of small 
spines on the outer edge. 
Pirst described by Professor Bell from a specimen dredged 
in fifty fathoms, by Mr. Hyndman, in the entrance of Bel- 
fast Bay. 
Pagurus Dillwynii, Bate.— Pirst pair of feet unequal, 
left much longer than the right, second and third joints 
armed with teeth ; outer antennae shorter than in any other 
British species, not so long as longest fore-leg. 
Pirst described by Mr. Spence Bate from a specimen 
taken near the "Worm's Head, Swansea, where it is said to 
burrow rapidly in the sand. It is also found in Cornwall. 
Pabricius has described in his Supplement (p. 414) a 
Pagurus from the coasts of Scotland, under the name of 
P. Araneiformis. It may be one or other of the preceding. 
Pam. PORCELLANIDAS, M. Edw. 
Tail ending in swimming-plates, much as in the Ma - 
