30 Notes on the Ivish Crustacea. 
It is remarkable of these very delicate and minute species, how 
varied and beautiful are their tints, though found in very deep 
water. I have often with intense admiration viewed those 
productions of minute and fragile forms, taken even from depths 
of seventy fathoms; and where wild ocean seas roll over them 
with fearful grandeur. Strikingly are those vivid colours seen in 
Pinnotheres Ebalia, and species of Hippolyte, as also in the larger 
species Osops Prawn, Pandalus Annulicornis. It is only when 
captured that their beauties are so marked and observable, for in 
the spirit preparations their beautiful tints vanish. 
It reminds me of the author of “ Bible Teachings in Nature ”— 
whose beauties of composition and truthfulness cannot be sur- 
passed :—* It is a remarkable circumstance that the most brilliant 
colours of plants are to be seen on the highest mountains, in spots 
that are most exposed to the wildest weather. The brightest 
lichens and mosses, the loveliest gems of wild flowers, abound far 
up on the bleak storm-scalped peak.” 
Atelecyclus heterodon, circular crab, was obtained by me 
some years since on the shore of Ferriter’s Cove, co. Kerry, after a 
gale. Itis with several others included in the list of donations 
to the Natural History Society, as stated in proceedings 13th 
March, 1857. It isa deep-water species, though given in Dr. 
Kinahan’s list of Dublin Crustacea, as found by him in the young 
state under stones at Merrion. 
Corystes Cassivelaunus, the masked crab, has been found on 
sandy beaches after gales. It is a remarkable genus. The 
carapace 1s oval, with lateral spines, the antenno and fore-legs of 
the male longer than the body. I have taken the male Corystes 
in the trawl net, Dingle Bay. The female in point of size mate- 
rially differs. 
The genus Thia, Tia Polita, has only so far been met ona 
sandy beach, Galway Bay. The figure in the appendix to Bell, 
p. 865, is more characteristic cf the Mediterranean species than 
those of Galway Bay, which are smaller. This rare species was 
first found by the late William M‘Calla in 1845. 
Having so far remarked on the first order, Decapoda, sub-order 
Brachyura, it must be obvious the variable characters of species, 
and how little dependence may be placed upon distinctions solely 
from denticulate, spinous, or hirsute developments. Such states 
