Land, Fresh- Water, and Marine Crustacea. 107 



Part I. 



Sub-Class I.— MALACOSTRACA. 



Order 1. Podophthalma, or Stalked-eyed Crustacea. 



Suborder Brachyura, . . number of species, 19 



,, Macrura, ... ,, ,,33 



„ Schizopoda, . . „ ,, 26 



Total number of species belonging to the Podophthalma, 78 



Order 2. Edriophthalma, or Sessile-eyed Crustacea. 



Suborder Sympoda (Cumacea), number of species, 21 



„ Isopoda, ... ,, „ 42 



„ Amphipoda, . ,, ,,115 



Total number of species belonging to the Edriophthalma, 208 



Sub-Class II.— ENTOMOSTRACA. 



Order 3. Branchiopoda. 



Suborder Cladocera, . . number of species, 51 



„ Branchiura, . ,, ,, 1 



Total number of species belonging to the Branchiopoda, 55 



„ ,, recorded in this Part, 311 



Part II. will contain a catalogue of species belonging to 

 the Order Ostracoda, of which there are about 132 species, 

 ,, „ Copepoda, of which there are about 300 ,, 



the Sub-Class Cirripedia, of which there are about 13 ,, 

 and adding to these the number given above, viz., 311 ,, 



The total number of species for the Forth at 



present known is about . . . 786 



In compiling this first part, should any species have been 

 overlooked, or should any additional species occur before 

 Part II. is published, they will be noticed in an Appendix 

 to that part. 



