962 —« REPORT—1858. 
Report of Dublin Dredging Committee, appointed 1857-58. 
By Professor J. R. Kinauan, M.D., M.RLA. 
Durine the past year, the following districts, all in the immediate vicinity of 
Dublin, have been examined :—Killiney Bay, Bray Head, Kish Bank, South 
Strand, Dalkey Sound, Howth, Malahide, Lough Shinny, Bettystown, and 
‘considerable advance made towards the completion of the Report. The 
following numbers of species have been catalogued :— 
Fishes,60; Mollusca, including Polyzoa, 262; Crustacea, 105; Arachnida, 5; 
Echinodermata, 29; Hydrozoa, 60; Actinozoa, 17; Sponges, 10; and many 
Annelides not yet identified. Various untoward events prevented the Com- 
mittee from carrying out fully the dredging arrangements which they had 
made at the commencement of the year. For the better perfeeting of the 
Report, they have determined to allocate to the several Members of the 
Committee certain classes of animals as the special object of study, and have 
divided these as follows :—Professor Kinahan, M.D., Articulata and Sponges; 
Dr. Carte, Vertebrata; Dr. Wright, Mollusca; and Professor J. R. Greene, 
Echinodermata, Coelenterata, &e. They propose also to include in their final 
report, as complete alist of the fishes of Dublin Bay as practicable, for which, 
as well as the further prosecution of their dredging researches, they would 
ask for a grant not exceeding £15 for the year 1858-59, the Committee 
consisting, as last year, of Professor Kinahan, Dr. Carte, Dr. Wright, and 
Professor Greene. 
Report on Crustacea of Dublin District. By Joun Roprert Kina- 
HAN, M.D., M.R.I.A., Professor of Zoology in the Department of 
Science and Art.—Part I. Decapoda Podophthalmata, 
Tue marine districts comprised in this Report consist of a series of open 
bays, into most of which a river-mouth enters; and of one or two extensive 
sand-banks which lie off the east coast of Ireland. 
The chief stations are—Dublin Bay and the estuaries of the rivers Dodder, 
Anna Liffey, and Tolka; a long lighthouse pier separates this into sub- 
districts—the North and South Bulls. The South Bull is almost exclusively 
fine sand, containing great numbers of broken shells, being made up from 
the washings of a cliff of marine drift; an extensive strand, left dry here at 
low water, is dotted over with sand-pools, in which Carcinus Menas, Mysis 
vulgaris, Mysis Chameleon, Palemon squilla, P. varians, Crangon vulgaris, 
Gammarus locusta, Gammarus palmatus and other species are found. A 
tidal stream called the Cockle lake, divides the bed of drift already spoken of 
from the strand proper; this at high tides is in many places from 2 to 3 
fathoms deep, but is singularly destitute of crustacea ; the bottom is a quick- 
sand. 
Passing along from this station towards Kingstown Harbour, we meet 
several patches of Zostera, in which Poré. holsatus is found in some numbers ; 
having passed Kingstown, the bay becomes rocky, one or two zostera-clad 
banks, here called Mullet Grass, being interspersed among the rocks; one of 
these, near Sandycove, furnished me at low water with the followingspecies:— 
-Hippolyte varians, H. Cranchii, Pandalus leptorhynchus (new species), 
Mysis vulgaris and chameleon, Crangon vulgaris, Crangon fasciatus, 
Apseudes talpa, Atelecyclus heterodon. 
