DUBLIN NATUBAL HISTORY SOCIEXr. 129 



same rule will be found to exist among them. My researches in Belfast 

 and Carrickfergus Loughs included, amongst others, dredging excur- 

 sions to Ballyholme Bay, Bangor, and Groomsport, in company with 

 Professors Wyville Thompson and Redfem, and Mr. Edward Waller ; 

 and to the Gobbins and Blackhead, with the Rev. G. Payne and Profes- 

 sor Andrews. Here, in addition to other species, I met the following, 

 previously unrecorded in the Belfast list, as published: — Crangon 

 fasctatus, C. Allmanm, C, aculptiis, C. spinosua, and a new species, 

 which I mean to describe more fully at some subsequent meeting, and 

 which I have called Crangon Pattersonii; Hippolyte Cranchii, IT, pust- 

 ola, and Oahthea Andrewsii. This latter occurred here in great nxim- 

 bers. 



I should mention that on an examination of the specimens in the 

 Belfast Museum, afforded me by the kindness of Messrs. R. Patterson 

 and Hyndman, I found specimens of Crangon Allmannii and Crangon 

 fasciatus, but marked in Mr. W. Thompson's handwriting as C. vulga- 

 ris — some of those obtained as far back as 1 838. 



Mr. Robert Patterson kindly accompanied me to Cultra and Craw- 

 fordsbum, where I found two amphipods, which have been first noticed 

 by me as Irish — viz., Gammarua palmatus, which I found two years 

 ago in Dublin, and Orchestia Deshayesiij which I had previously found 

 at Carrickfergus. This latter is generally believed to be identical with 

 the Egyptian species described by Savigny. 



Floating on the sea, in the cavities of AcalephsB, Hyperia galha was 

 met' in immense numbers; and a LestrigonuSf which appears to be 

 L. Fahricii of Edwards, and which I suppose is the species which, 

 owing to its bad state of preservation, W. Thompson failed to identify. 



I append a list of the principal species obtained, marking those de- 

 capods which do not occur in Dublin ; and among the amphipods the 

 species which are recorded there ; our information regarding this group 

 is, however, at present so scanty that it were dangerous to dwell too 

 much on this group. I have also inserted here the species of both those 

 and the isopods which I have met in Dublin, not Belfast, as some of 

 them are unrecorded. 



List of Species of Crustacea obtained in Belfast Lough. 



{1^. B. — The decapods of Belfast having been already enumerated by 

 mo in full in former papers, from William Thompson's list, and the 

 specimens in the Ordnance Survey collection, I here note only such as 

 require further notice.] 



Thua marked (*) not foand in Dublin. 



Crustacea Decapoda. 



Inaehus dorynchus, — Occurred not uncommonly in Ballyholme Bay and 



off Bangor ; no other species occurred to us. 

 Eurynome aspera, — Ballyholme Bay and off Whitehead ; docs not 



appear to be rare. 



