Classification. 
25 
SYSTEMATIC SERIES. Table- 
cases 
The following table gives the system of classification which has Nos. 1 - 16 . 
been adopted in arranging the collection : — • 
Class CRUSTACEA . 
Sub class BRANCHIOPODA . . 
„ OSTRACODA . . . 
„ COPEPODA 
„ CIRRIPEDIA . . . 
„ MALACOSTRACA. 
Series Leptostraca. 
Division Phyllocarida 
Series Eumalacostraca. 
Division Syncarida . 
Peracarida 
Hoplocarida 
Eucarida . 
Order Phyllopoda. 
,, Cladocera. 
C ,, Myodocopa. 
I ,, Podocopa. 
( ,, Eucopepoda. 
Branchiura. 
Thoracica. 
Acrothoracica. 
Ascothoracica. 
Apoda. 
Rhizocephala. 
Order Nebaliacea. 
Order Anaspidacea. 
Mysidacea. 
Cumacea. 
Tanaidacea. 
Isopoda. 
Amphipoda. 
Stomatopoda. 
( - 7 , Euphausiacea. 
| ,, Decapoda. 
Sub-class I.— BRANCHIOPODA. 
This Sub-class includes a number of very primitive Crustacea Table-case 
which differ widely from one another in many points of structure, No ‘ 
but agree in having the appendages of 'the trunk, for the most 
part, flattened and leaf-like. It is divided into two Orders, 
Phyllopoda and Cladocera. 
Order 1. — Phyllopoda. 
The number of somites is large (about 14 to 40) and the trunk- 
appendages maybe still more numerous (up to 60), several pairs being 
sometimes borne on each somite in the posterior region of the body. 
The Phyllopoda are specially interesting on account of their 
