414 
Reviews — Henry Woodward — 
appearance in time (so far as we kave been enabled to ascertain it) 
of eacli order, and its recurrence in eacb successive formation. 
Decapoda 
Brachyura. 
Decapoda 
Anomura. 
Decapoda 
Macrura. 
| Stomatoda. 
< 
a 
o 
fl 
o 
1 Trilobita 
( extinct). 
Amphipoda. 
XlPHOSURA. 
Eurypteiiida 
(extinct). 
< 
fl 
o 
fl 
o 
•j 
fl 
> 
=: 
-< 
fl 
o 
o 
< 
fl 
H 
o 
4 
fl 
s 
«c 
fl 
◄ 
« 
4 
fl 
fl 
fl 
fl 
t-J 
Post-Tertiary 
X 
X 
X 
X 
X 
..... 
X 
X 
..... 
X 
X 
X 
X 
Tertiary 
X 
X 
X 
X 
X 
X 
X 
X 
X 
x 
X 
Cretaceous 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Jurassic 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Triassic 
— 
X 
X 
X 
Permian 
X 
X 
x 
Carboniferous 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Old Eed Sandstone 
X 
X 
X 
X 
X 
Tipper Silurian 
X 
X 
X 
X 
X 
X 
X 
Lower Silurian 
X 
X 
X 
Cambrian 
X 
X 
x 
Pre-Cambrian 
Brachyuka. — The oldest known Crab is the Palceinachus longipes, 
H. Woodw., from the Forest Marble (Great Oolite), Wilts. The 
Crabs are well represented from the Jurassic period to the present 
day, when they attain their maximum development within the warm, 
temperate, and subtropical latitudes, where land, freshwater, and 
marine specimens ahound. 
Anomura. — The Anomura embrace forms of Decapoda, both re- 
lated to the Brachyura (e.g. Dromia, Porcellana, Dorippe, etc.) and 
to the Macrura (e.g. Pagurus, Galathea, Munida). Their earliest 
appearance is in the Cretaceous period. Numerous species of land 
and marine Anomura are found within the tropics, and the marine 
species occur very widely distributed in the colder seas of the 
glohe. 
Macrura. — Of this division of the Decapoda a single species, the 
Anthrapaleemon Grossartii, occurs in the Coal-measures, and is well 
represented from the Trias to the present day. There are abundant 
freshwater and marine, but. no Zcmd-dwelling Macrura. 
Stomapoda. — One species (the Pygocephalus Huxleyi, H. Woodw.) 
from the Coal-measures probably is referable to this division. True 
Squillas and Mysis-like Crustaceans occur in the Jurassic rocks. 
They are most abundant in our modern seas. 
Isopoda. — The remains of a single species of Isopod, Prcearclurvs 
gigas, H. Woodw., have been obtained from the Old Red Sandstone 
of Herefordshire, and other representatives occur in the Carboniferous 
and Secondary rocks. The Isopoda are most widely distributed over 
land and sea to-day — terrestrial, freshwater, and marine species 
abound. 
Trilobita. — This extinct Order ranges from the Lower Cambrian 
to the Carboniferous Series, more than 300 British species being 
