5(^0. 
.Ns:5 
CONTENTS. 
PAGE. 
Letter op Transmittal ry E. F. Pittman, Esq., A.ll.S.M., Government Geologist, xi 
Editor’s Preface ... ... ... ... ... ... ... ... ... ... xiii 
MEMOIll. 
I. — Introduction 
TI. — Description of the Genera and Species 
Part I. — Silurian Species ... 
Class — Riiizopoda 
Order — Spongida ... 
Genus — Strom atopora 
Class — Actinozoa 
Order — Rugosa 
Genus — Strombodes ... 
,, Ptyciiophyllum 
„ Cystipiiyllu.m 
„ Omphyma 
,, Cyatiiopiiyllum 
Order — Tubulosa ... 
Genus — Aulopora 
Order — Tabu lata 
Genus — Syringopora ... 
,, Halysites 
,, Monticulipora 
,, Alveolites ... 
,, Stri atopora ... 
,, Favosites 
,, Propora 
,, Plasmopora ... 
,, Heliolites ... 
Class — Braciiiopoda 
Genus — Chonetes 
,, Lept^ena 
,, Stropiiomenes 
„ Pentamerus... 
,, Ortiiis 
,, Atrypa 
,, PtETZIA 
,, Spirifer 
„ Meristella ... 
1 
7 
7 
7 
7 
7 
8 
S 
8 
0 
!) 
10 
10 
11 
11 
11 
11 
12 
13 
14 
15 
15 
18 
19 
19 
20 
20 
21 
22 
24 
25 
26 
27 
28 
28 
