Classification. 

 SYSTEMATIC SERIES. 



25 



Table- 

 cases 



The following table gives tlie system of classitication which has Nos. 1-16. 

 been adopted in arranging the' collection : — 



Class CBUSTACEA. 



Sub-class BEANCHIOPODA 



OSTRACODA . 



COPEPODA . . 



CIRRIPEDIA . . . 



MALACOSTRACA. 

 Series Leptostraca. 



Division Phyllocarida 

 Series Eumalacostraca. 



Divisioia Syncarida . 



,, Pcracnrida 



,, Hoiilocarida 

 Eiicnrida . 



^ Order Phyllopoda. 



\ „ Cladocera. 



^ ,, Myodocopa. 



I ,, Podocopa. 



,, Eucopepoda. 



,, Branchiura. 



,, Thoracica. 



,, Acrothoracica. 



,, Ascothoracica. 



,, Apoda. 



,, Rhizocephala. 



Order Nebaliacea. 



Order Anaspidacea. 



,, Mysidacea. 



„ Cuniacea. 



,, Tanaidacea. 



,, Isopoda. 



,, Amphipoda. 



,, Stomatopoda. 



C ,, Euphausiacea. 



I „ 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, °' • 

 but agree in having the appendages of the trunk, for the most 

 part, flattened and leaf-like. It is divided into two Orders, 



riti/IIopodii and Cladocera. 



Order 1. -Phyllopoda. 



The number of somites is large (about 1-i 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 



