404 Bibliographical Notices. 
Altogether this completely revised and augmented Monograph of 
the Podocopal Ostracoda of the north-western regions of the Northern 
Hemisphere adds greatly to the credit of the authors, well known 
for their industry, acumen, and extensive biological knowledge, of 
the lower Crustacea in particular. The care with which they have 
noted the helpful labours of their fellow-workers gives additional 
value to the results of their own researches. 
A Supplementary Monograph of the Tertiary Entomostraca of 
England. By T. Ruverr Jones, F.RS., &., and C. Davies 
Suerporn, F.G.S. Paleontographical Society of London. Ato. 
55 pp. 3 plates. 1889, 
In 1857 a Monograph on the Tertiary Ostracoda of England was 
published by the Paleontographical Society, and some revision of 
the species was given in the ‘ Geological Magazine’ of 1870 by 
Prof. Rupert Jones. Then the Post-tertiary Entomostraca of Scot- 
land, England, and Ireland appeared in an elaborate Monograph 
(Palzont. Soc.) by Brady, Crosskey, and Robertson, in 1874. Fur- 
ther Tertiary species were published in the Geol. Mag. of 1874 by 
Jones and Sherborn ; and all the known Tertiary species of England, 
with such of the Post-tertiary forms as had already been noticed in 
the Monograph of 1857, are now revised, redescribed, and refigured 
as far as may be necessary in the new Supplementary Monograph. 
The Table at pp. 49-51 indicates 120 species and notable varieties 
of Ostracoda treated of in this Monograph, 4 ranging from the Cre- 
taceous upwards to the Eocene; 5 in the Woolwich and Reading 
beds, one of them going up even to Recent times; 20 in the London 
Clay, a few of them ranging somewhat higher, but one not distin- 
guishable from the recent Krithe glacialis ; 17 from the Bracklesham 
Beds, a few of them repeated in the Barton and Headon Beds ; 7 
others in Barton Beds, 2 reoccurring in the Headon Beds and Arithe 
bartonensis even in the Post-tertiary and Recent; 7 belong to the 
Headon Beds, besides some already referred to. The Osborne, Bem- 
bridge, and Hamstead Beds have 7 species, mostly of freshwater or 
brackish habits, one of them (Cypris gibba) living on to late Pliocene 
and Recent times, and one (Cypridea spinigera) from Hamstead 
undistinguishable from a Wealden species. The White Crag of 
Suffolk gives 19 species, three going up to the Red Crag and three still 
higher, one of them (Cythere convewa) to existing seas. The Red 
Crag has three other species, two of which reoccur even among 
Recent forms. The Norwich Crag has 8 species, mostly peculiar, 
except the Recent Cytheridea punctillata. From the Weybourne 
Crag 15 species and varieties have been obtained (chiefly by Mr. 
Clement Reid, F.G.S.), of which about half range upwards to Post- 
tertiary and Recent times. Four or five Post-tertiary species, found 
also in the Recent state, come into the list as having been described 
in the original Monograph in 1857. 
The elaborate Monograph by Brady and Norman on the British 
and North-western European Ostracoda, published contempo- 
