ARCTOPSIS. 21 



"Not a very common species. Mr. Bell finds it abun- 

 dantly at Bognor, where "they are found concealed under 

 the long hanging fuci which clothe the rocks at some dis- 

 tance from the shore," where they congregate in vast num- 

 bers in the prawn and lobster pots. " I have seen probably 

 thirty amongst the refuse of one of these, attracted no doubt 

 by the garbage which is placed in them as bait." Mr. Bell 

 found the males to be larger than the females. Mr. Eyton 

 obtained this at the Isle of Man, and the Rev. A. Norman 

 at Guernsey and at Budleigh Salterton. 



Arctopsis lan ata, Lam. sp * Gibbss Crab. (Plate I. 

 fig. 2.) — Hind part of carapace triangular, lateral margin 

 without spines ; branchial region on each side with a strong 

 spine; the whole carapace covered with dense villous hairs 

 much longer than in the last species. 



South coast of Devon, Cornwall, and Sussex; Isle of Man 

 (Mr. Eyton); Guernsey (Eev. A. Norman). 



* Cancer biaculeatus, Montagu. ; Pisa Gibbsii, Leach ; Arctopsis lanata, 

 Lam. Syst. An. s. Vert. p. 155 (1801), an older name than either Montagu's 

 or Leach's. 



