Reviews — The PaJeeontographical Society. 
229 
has been reached since tlie retreat of the ice ( a .) “ deposits 
possibly belonging to a period of warmer-climate conditions than 
now exist ( b .) “ series of Post-glacial deposits belonging to the 
niost recent period of the depression of the land,” — such as Eaised 
Beaches and Estuarine Muds. 4. “ General sequence of the Post- 
tertiary beds of Scotland,— Preglacial, Early Glacial, Middle Glacial, 
Final Glacial, Early Post-glacial, Middle Post-glacial, and Final 
Post-glacial; the termination of the Period being marked by the 
most recent elevati^n of the land ” (pp. 93 — 96). 5 “ Relationships 
between the Glacial fauna of Scotland, the Recent British fauna, and 
the Glacial fauna of Norway and Canada, established by Ostracoda 
as well as by Mollusca ” (pp. 96 — 99). 6. English, Irish, and 
Welsh Post-tertiary deposits examined for Entomostraca (pp. 100 — 
108). 
When we consider that fifty principal localities of the Post-tertiary 
Ostracoda are here systematically treated of, we can form some 
notion, not only of the mass of geological information brought 
together in this Monograph, but of the importance of these ininute 
fossil Entomostraca among the “ Medals of Creation.” An elaborate 
table of the Distribution of the Fossil Ostracoda over the Post- 
tertiary Localities, a copious Table of Contents, and a good Index 
of generic and specific names, greatly add to the value of this 
Monograph. 
The “ Journal of Bores at Garvel Park,” given at p. 44, etc., we 
may mention, is not a private diary of self-complacent uoodles, 
pedants, and witlings at a dull country-house ; but a strictly Pro- 
fessional illustration of the good old mole-like geologist’s motto — 
“ I bore.” 
II. The next constituent of the 1874 Yolume is Part I. of a 
Monograph of the British Fossil Bivalved Entomostraca from the 
Carboniferous Formations, by T. Rupert Jones, J. W. Kirkby, and 
G. S. Brady ; and this first portion is devoted to “ the Cypridinadae 
and their Allies.” Some parts of the Mountain Limestones of various 
countries seem to abound in subglobular bivalve carapaces, and their 
loose valves, which approximate in character to various meinbers of 
the Cypridinad group ; some are also found in the Coal-measures ; 
and others in the older Devonian, and even in the Silurian rocks. 
Tliey are assooiated frequently with other Ostracodous valves, such 
as Beyrichia, Leperditia, Cytheridce, and Cyprida of various alliances. 
In this part of the Monograph we find 13 Cypridina (directly related 
to the existing Cypridina) ; 7 Cyprülinella, 9 Cypridellina, 6 Cypri- 
della, and 2 Sulcuna, which are genera arranged artificially to 
receive several forms of carapace varying by gradational differences 
from the valves of the known Cypridina; 2 Cyprella; 1 Brady- 
cinetus ; 1 Philomedes ; and 2 Jthombince, of which much the same 
may be said as of the foregoing; also 4 Entomoconchi, 1 Offa , and 
3 Polycopes. The definition of the true Cypridina, — the true alloca- 
tion of the several species placed by De Köninck under Cyprella, 
Cypridella . and Cypridina, — and a more exact interpretation of 
M‘Coy’s Entomoconchus, are (besides mauy new species) the chief 
