Land, Fresh- Water ^ and Marine Crustacea. 267 



XX TIL A Catalogue of Land, Fresh- Water, and Marine 

 Crustacea found in the Basin of the River Forth and 

 its Fstuary. By Thomas Scott, LL.D., F.L.S., Mem. 

 Soc. Zool. cle France, etc. 



(Read 26th March 1906.) 



PAET IT.— THE OSTEACODA, COPEPODA, and 

 CIRKIPEDIA. 



(Part I., published in the Proceedings, Vol. XV T. pp. 

 97-190, contiiined the Malacostraca, Cladocera, 

 and Branchiura.) 



Order OSTEACODA. 



The work that has been mainly followed in the arrange- 

 ment and nomenclature of the Ostracoda is that by Professor 

 G. S. Brady and the Eev. Canon A. M. Norman, entitled 

 "A Monograph of the Marine and Fresh-Water Ostracoda 

 of the I^orth Atlantic and E'orth-Western Europe." The 

 work was published in two separate portions in the scientific 

 Transactions of the Roycd Did)lin Society. The first portion, 

 which formed Part II. of Vol. IV. (Series 2), appeared in 

 1889, and the second, which formed Part II. of Vol. V. of 

 the same series, in 1896. 



In this work the Ostracoda are divided into four sections, 

 viz. — (1st) the Podocopa, which comprises all the fresh- 

 water and most of the marine species ; (2nd) the Myodocopa, 

 which is represented in this Catalogue by only two species, 

 Asterope Marice and Philomedes interpuncta ; (3rd) the 

 Cladocopa, which is represented by Polycope orhicidaris and 

 Polycopsis compressa ; and (4th) the Platycopa — a section 

 not represented in this Catalogue. 



As this work has been, with few exceptions, followed 

 throughout, I have not considered it necessary to mention 

 it under every species, and where it is mentioned it is 

 referred to as the Monograph (or I. c). Part I. or Part IT., 

 as the case may be. 



Various other works have been consulted, two of which 

 VOL. XVI. 2 c 



