﻿Revieios — The PalceontograpMcal Society. 229 



has been reached since the retreat of the ice ;" (a.) " deposits 

 possibly belonging to a period of warmer-climate conditions than 

 now exist;" (h.) "series of Post-glacial deposits belonging to the 

 most recent period of the depression of the land," — such as Eaised 

 Beaches and Estuarine Muds. 4. " G-eneral 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 elevation 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 minute 

 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 noodles, 

 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 Volume 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 Cypridinadse 

 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 members of 

 the Cypridinad group; some are also found in the Coal-measures; 

 and others in the older Devonian, and even in the Silurian rocks. 

 They are associated frequently with other Ostracodous valves, such 

 as Beyrichia, Leperditia, Cytheridcs, and Cypridce of various alliances. 

 In this part of the Monograph we find 13 Cypridince (directly related 

 to the existing Cypridina) ; 7 Cypridinellce, 9 Cypridellin(e, 6 Cypri- 

 deUie, and 2 SuIcvakb, which are genera arranged artificially to 

 receive several forms of cai'apace varying by gradational differences 

 from the valves of the known Cypridina; 2 Cyprellcs; 1 Brady- 

 cinetus ; 1 PMlomedes ; and 2 Bhombince, of which much the same 

 may be said as of the foregoing ; also 4 EntomoconcJii, 1 Offa, and 

 8 Polycopes. The definition of the true Cypridince, — the true alloca- 

 tion of the several species placed by De Koninck under Cyprella, 

 Cypridella, and Cypridina, — and a more exact interpretation of 

 M'Coy's Entomoconchus, are (besides many new species) the chief 



