CRUSTACEA OF THE CHAXXEL ISLANDS. 215 



POPtunus pusillus, Leach. Among small stones and gravel from low tide 

 mark to deep water in all the islands. 



Portunus longipes, Risso. of this beautiful crab I have had but one 

 example, which was taken at La Rocque, Jersey, in 1888. 



Polybius HenslOWii, Leach. This is an ideal swimming crab, and the only 

 one that rises to any distance above the ground, being sometimes taken 

 in herring nets. Erratic in occurrence, sometimes common, then absent 

 for long periods. At Greve d'Azette, Jersey, I once found very nearly 

 half a bushel of them stranded on a small area. 



Pinnotheres pisum, Pen. Pea Crab. The female, about the size and 

 shape of a marrowfat pea, is tolerably frequent, living within the mantle 

 of the oyster. The male, smaller, more flattened, and more strongly 

 calcified, is sometimes foand with his mate, but more frequently among 

 the refuse of the oyster -dredge. 



(Pinnotheres veteruta, Bell, may j^ossibly occur with us, but its usual 

 host, the large Phina marina, is so rare that the chance of finding it is not 

 great. It is to the genus Pinnotheres that the "land crabs" of tropical 

 countries belong.) 



Gonoplax angulata, L\ihr. This crab, a sand dweller, is not common 

 with us. I have seen only two specimens, both from St. Aubin's Bay, 

 Jersey, one of which is in the Museum of the Societe Jersiaise, and the 

 other in the Ouille-Alles IMuseum. 



Ebalia Pennantii, Leach. The commonest species in these islands of the 

 pretty little nut crabs, all of which occur on nullipore and rough gravelly 

 bottom from low tide level to deep water. 



Ebalia Bryerii, Leach. Less common than the last. 



Ebalia Cranehii, Leach. Rather rare. I have taken all three species to- 

 gether off Fermain Bay, (juernsey, and the two first named (fairly 

 numerous) off Corbiere Point, Jersey. 



Ateleeyelus heterodon, Leach. Rather rare in the Channel Islands, the 

 only localities known to me being off Fermain Bay, Guernsey, and Gore}' 

 Roadstead, Jersey. 



COPystes eassivelaunus, Pen. This is the "White Sand Crab" of the 

 fishermen, and the "Masked Crab" of popular bcoks on zoology. It 

 lives buried, all but its claws, antennae and eyes, in soft sand, low down 

 in tide range. Not common. 



Thia polita, Leach. Burrows in soft white sand at extreme low ti'le limit. 

 Occurs in Jersey and Herm to my knowledge, and probably also in the 

 other islands. 



ANOMURA. 



I am following Bell in ])lacing' the species which imme- 

 diately follow under this section ; but as a matter of fact, this 

 arrangement is based on error. The Hermit Crabs, Porcelain 

 Crabs, Galatheas, and the Stone Crab, wliich formed this 

 division are imdoubtedly Macrurans ; while Dromia^ which 

 also formed part of the section, is certainly a Brachyurdn. I 

 have discussed this point at length in my " Outline of the 

 Natural Historv of our Shores," and as lonp- ao^o ns 1889 I 

 wrote an article on the subject, with illustrations, which 

 appeared in Life Lore for Augnst of that year. A few weeks 

 ago Canon A. ^I. Norman informed me that in a recent work 

 on the Crustacea (which I have not yet seen) these species are 

 placed in their proper position. 



