NOTES ON THE IRISH CRUSTACEA. 
BY 
WILLIAM ANDREWS, Esq. 
Frrst SERIES. 
[Read May 21st, 1877.] 
SincE the death of my lamented friend and esteemed colleague in 
science, Dr. John Robert Kinahan, F.L.S., Honorary Secretary 
to the Natural History Society of Dublin, no attempts have 
been made, scientifically, to investigate the crustacea of Ireland, 
in addition to those lists which he had so carefully reviewed and 
revised. Few possessed the same zeal and energy, whether as a 
practical investigator, or a sound inquirer into the views of 
theoretic science; therefore, the loss is to be deplored of him 
who promised, as a faithful expositor, to be one of our brightest 
labourers in the field of natural science. Irish authorities previous 
to the period of his published investigations, were numerous, 
amongst whom may be enumerated Doctors Robert Ball, and 
Drummond, Forbes, William Thompson, Allman, Paterson, 
Hyndman, Melville, and an ethusiastic collector, William M‘Calla. 
These have all more or less contributed to the knowledge of that 
branch of Natural History. 
The very valuable observations of Captain Du Kane, and of J. 
V. Thompson of Cork, in metamorphic carcinology, must not be 
forgotten, the foundation established of insight into the early 
stages of metamorphic development. The persevering zeal of the 
late William Thompson of Belfast, and the candour with which 
all his communications were carried out, when, alas, rivalry and 
jealousy too generally existed, cannot but be most pleasingly held 
in recollection. His papers contributed to the Annals of Natural 
History in the volumes for the years 1842 and 1843, have fully 
noticed the Irish crustacea known at those dates, and which have 
been continued in the fourth volume of the work on the Natural 
‘History of Ireland, published in 1856. 
My object is to give a series of remarks on the crustacea of 
Treland, and to add comments on the species which have been 
obtained, and as far as practicable on their habits, since the notices 
that have already appeared through the investigations of those 
