INTRODUCTION. 
Echin. 3 
B. 
Geological :— 
i General ...... 
Page 
53 
ii Cainozoic :— 
a. General ..... 
53 
b. Pleistocene ..... 
53 
c. Pleiocene ..... 
54 
d. Meiocene. 
54 
e. Oligocene ..... 
55 
f. Eocene ..... 
55 
iii Mesozoic :— 
a. General ..... 
55 
b. Cretaceous (i. Upper. 2. Lower) 
• 
55 
c. Jurassic (1. Upper. 2. Middle. 3. 
Lower) 58 
d. Lias (including Rhaetic) 
• 
59 
e. Trias ...... 
• 
59 
iv Palaeozoic :— 
a. General . . . - 
60 
b. Permian ..... 
60 
c. Permo-Carboniferous . 
60 
d. Upper Carboniferous . 
60 
e. Lower Carboniferous . 
60 
f. Devonian ..... 
61 
g. Silurian ..... 
61 
h. Ordovician ..... 
61 
k. Cambrian ..... 
62 
1. Pre-Cambrian .... 
(V acant) 
Systematic. 
a. Echinoderma, general ..... 
62 
B. 
Holothurioidea ...... 
62 
C. 
Echinoidea ....... 
70 
D. 
Asteroidea ....... 
85 
E. 
Ophiuroidea ....... 
88 
F. 
Crinoidea ....... 
93 
G. 
Cystidea and Edrioasteroidea 
96 
H. 
Blastoidea ....... 
98 
K. 
Incertae Sedis ...... 
99 
INTRODUCTION. 
I. Titles. The annual harvest increases. Even without the additional 
energy that was devoted at the close of the last century to gleaning what 
had been dropped, the total is but some thirty less, while the actual 
number for 1901 is 9 more than in 1900, which was itself an advance on 
any previous year. The total of 340 is composed as follows : 1899, 1; 
1890, 1; 1891, 1; 1893, 2; 1894, 2; 1895, 2; 1896, 2; 1897, 4; 1898, 8; 
1899, 8; 1900, 42; 1901, 267. This brings the total for 1900 up to 299. 
The numbers as they stand might have been magnified by counting 
various abstracts and translations as separate items, and might have been 
further increased had the Recorder cared to admit a number of works 
which he supposes to contain matter relating to Echinoderms, but which 
he has failed to see. 
