48 



am indebted for specimens from both localities. I have 

 been favoured with another specimen, also a female, and 

 loaded with spawn, by Mrs. Griffiths, who took it at Tor- 

 quay. I cannot doubt that Ew. spinosa of Mr. Hailstone, 

 described in the eighth volume of the Magazine of Natural 

 History, is the young of the present species ; it was taken 

 at Hastings " in a mass of Fil'ipora filigrana? 



The following account of its occurrence as an Irish spe- 

 cies, is taken from Mr. W. Thompson's Catalogue of the 

 Crustacea of Ireland. " Marked as Irish in Mr. J. V. 

 Thompson's collection. It is rather a rare species, and an 

 inhabitant of deep water." In Strangford Lough several 

 specimens were taken by Mr. Thompson and Mr. Hynd- 

 man. It has occurred in Belfast Bay, on the Dublin coast, 

 and at Roundstone on the Avestern coast. It was obtained 

 also by Captain Beechey off the Mull of Galloway, at 

 seventy fathoms. It is found on the coast of France, from 

 whence I have received specimens through the kindness of 

 my friend Dr. Milne Edwards. 



Being found only in deep water, but little is known of 

 its habits. The eggs are of a beautiful orange colour; they 

 are deposited in June, or the early part of July, as I have 

 a female specimen taken at the latter end of June, in which 

 the eggs are so fully developed, that the embryo can be 

 seen through the investing' membranes. 



When Dr. Leach established this genus, the present was 

 the only species known. Risso has, however, since that, 

 described another species, to which he gave the name En. 

 sct/frWitfif,* but so imperfect is the description, that Dr. Milne 

 Edwards found it impossible to judge, with any degree of 

 certainty, whether it belonged to this genus or not ; and if 

 so, whether it might not be identical with the present. 1 



* Risso, Hist. Nat. de YV.m: Merit]., IV. |>. '_M. 



