Durrpen— The Hydroids of the Irish Coast. 409 
VI. ATRACTYLIDZ. 
Atractylis arenosa, Alder. 
On the west coast at a depth of 50 fathoms (1893); shore 
collections at Rush, county Dublin (18940). 
Perigonimus repens, T. S. Wright. 
Berehaven, growing on Sertularia abietina; on Scaphander, 
Galway Bay ; off the Skelligs, depth 40 to 80 fathoms; Dingle 
Bay (1893). 
Perigonimus gelatinosus, Duerden. 
On shells inhabited by Pagurus from rather deep water, 
Dingle Bay, depth 40 fathoms (R. D.S8.); south-west of Ireland, 
depth 50 fathoms; 94 miles south-west of Castletown, depth 
37% fathoms (1895). 
Perigonimus (?) inflatus, Duerden. 
On Sertularia abietina and other zoophytes from fairly deep 
water, 11 miles south of Glandore Harbour, depth 54 fathoms ; 
13 miles south-west of Galley Head, depth 43 fathoms (1895). 
Perigonimus (?) linearis, Alder. 
South of Glandore Harbour, depth 54 fathoms (1893). 
Garveia nutans, I’. 8. Wright. 
South-west corner of Dalkey Island, associated with Tubularia 
humilis and T. indivisa (1886). 
Bimeria vestita, T. S. Wright. 
Lough Swilly (1895). 
Dicoryne conferta, Alder. 
This zoophyte, growing on shells inhabited by hermit crabs, is 
not uncommon on the west coast ; found growing luxuriantly, 
with the gonophores on the branches well developed, around the 
mouth of a Buccinum shell, and also on that of a Fusus, from off the 
Skelligs, depth 50 fathoms; from Kenmare River (R. D. S.); 
Bantry Bay; Berehaven; at a depth of 50 fathoms off the south- 
west of Ireland (1898). 
2 G2 
