~ * 
By Mr. ANDREWs. 29 
dredgings of Belfast Bay. It is mentioned by William Thompson 
as observed in the same locality, and as the species lividus, by 
Dr. Ball, in Dublin Bay. AsI have observed different views 
have been given with regard to the special marmoreus, holsatus, 
and corrugatus, it will be necessary that a careful collection 
should be formed to note and to decide upon their true definitions. 
Before concluding the list of the Portuni, I have much gratifi- 
cation in recording as Irish, Portanus longipes, Risso. This 
decidedly distinct species is characterized by the length and 
slender proportions of its legs, and by a well marked ridge across 
the carapace, terminating at each margin with a strong spine. It 
is truly a Mediterranean species, and with others strongly bear out 
the geographical distribution of Mediterranean and Lutilanian 
species on our south-western shores, and with those of Cornwall. 
This rare Crustacean is figured and described in the appendix to 
Bell’s British Crustacea, p. 361. 
The genus Polybius, of which but a single species is as yet 
known, first found on the coast of Devonshire, and the specific 
name given to it by Leach—Henslowii, of its discoverer Professor 
Henslow. It has been taken by my friend, Professor Allman, at 
Crookhaven, coast of Cork, swimming amid shoals of Acalephe, a 
strong surface swimmer. It is not recorded in Bell’s work as an 
Jrish species. 
The genus Gonoplaa, similar to Polybius, as rising to the surface, 
was taken by me in thirty-eight fathoms, Dingle Bay; though 
two species are described, Angulata and Rhombrides, they are 
merely varieties, only distinguishable by the latter having a kind 
of protuberance on the angles of the carapace, the former with 
two spines. 
The fishermen recollect having scen a similar crab taken in the 
net when fishing for herrings in Ventry Harbour. Gonoplax 
angulata is a rare species. A single specimen was shown to Dr. 
Kinahan, which had been thrown ashore near the Quay, at 
Valentia, after a heavy gale, but he failed to find one. 
Of the genera Pinnotheres and Kbalia, all the species have been 
taken on the south-west coast, and frequent in deep water in the 
outer Blasket Sound. With Porcellana longicornis, in the young 
states, they are found in the cavities of the coral Escharafoliacea. 
T have taken Lbalia Pennantw of a beautiful rose colour. 
