2 
the common Lobster noted that I am aware of. The Norway 
Lobster, Nephrops common as far south as Dublin Bay, is but 
doubtful as a fossil. Galathea squamifera is almost unique 
(Reed coll.) from Selsey. 
The Entomostracan Crustacea have been fully described in 
the well-known monographs of the Palseontographical Society, 
but as the remaining orders have met with but little attention, it 
may be desirable to mention so much as is known, the 
labours of Mr. Bennie of Edinburgh, and other observers having 
shewn the possible existence of many species of Isopods, 
Phyllopods and Cladocera despite the tenuity and softness of 
the exodermal envelope. 
The Cirripedia have in like manner been little studied, 
whether students have been frightened by Darwin’s dictum 
(Mon. Foss. Bal. Pal. Soc. v. 8), “Let no one attempt to 
identify the species of this genus from exterior appearances 
for otherwise he will be sure to make a mistake ” is the 
sum of his warning, I cannot tell, but with all deference I 
may be allowed to say, that I think the Professor was over 
cautious in the matter. I have ventured to compile a list of 
all species, good and bad, described as occurring in these Isles, 
with such notes as may be desirable up to the present time. 
Cladocera. 
The clays at the Dipple Tile Works, Ayrshire, have yielded 
the following species:— Alone elongata , A. guttata , A. 
quadrangalaris, Camptocercus macrourus , and Chytoris sphericus. 
Mr. Mahoney in his account of the Crofthead or Cowden Glen 
deposits obtained many fragments of the chitinous debris of a 
species of Daphnea. It also occurs at Garvel Park, on the 
Clyde. 
D. pulex , (Mr. J. Bennie,) is found in the beds at Loch 
Dronachy, Fife, Corstorphine near Edinburgh, and Burnhead 
Quarry, Ayrshire. 
Of the Isopoda, the “pill” millipede, Armadillo vulgaris Edw. 
seems to be the only land representative preserved, marine 
species being unknown. The position of the remains do not 
suggest any great age, chiefly occurring in the alluvia of rivers, 
often, as in that of the River Medway, at some distance from 
the river itself. The brick earth with land shells, interspersed 
