44 D. J. SCOURFIELD, BRITISH FRESH-WATER ENTOMOSTRACA. 



64. Kaufmaxn, A. " Die schweizerischen Cytheriden unci ihre 



nachsten Verwandten." Revue Suisse de Zoologie, tome 

 iv., 189G, pp. 313—384. 



65. Kaufmann, A. " Cypriden und Darwinuliden der Schweiz." 



Revue Suisse de Zoologie, tome viii., 1900, pp. 209 — 423. 

 6Q>. Muller, G. W. " Deutschlands Siisswasser-Ostracoden.'' 



Zoologica, Heft 30, 1900. 

 07. Sars, G. O. " On a new Fresh-water Ostracod — Stenocypris 



chevreuxii." Archiv. f. Math, og Naturvidenskab, Chris- 



tiania, vol. xviii., No. 7, 189G. 

 68. Vavra, W. " Monographie der Ostracoden Bohmens."' 



Archiv der y aturwiss. Landesdurchforschung von Bohmen, 



vol. viii., No. 3, Prag, 1891. 

 09. Wilson, C. B. "North American parasitic Copepods of the 



Family Argulidae, with a Bibliography of the Group and 



a Systematic Review of all known Species." Proc. U.S. 



Nat. Museum, vol. xxv., pp. 635 — 742, Washington, 1902. 



Explanation of Plate 2. 



[In accordance with the desire expressed in Part II., some 

 details of Cyclops nanus Sars and Belisarius viguieri Maupas 

 have been illustrated on the accompanying plate. So far as 



B. viguieri is concerned it is hoped that they will be sufficient 

 to enable the species to be readily identified. With regard to 



C. nanus, it may be mentioned that it is closely related to C. 

 languidus in that it has both branches of the first pair of feet 

 and the inner branch of the second pair two-jointed. The first 

 antennae are, however, as in C. languidoides, only eleven-jointed. 

 It is a very small species, being only about -^ in. in length.] 



Fig. 1. Belisarius viguieri, ? , ventral view x 200. a = sper- 



matophore. 

 ,, 2. ,, ,, second antenna x 400. 



„ 3. „ „ ?, fifth foot x 650. 



,,4. ,, ,, $ , side view of furca x 300. 



,, 5. ,, ,, £ , furca, ventral view x 225. 



,, 6. Cyclops nanus, ? , fifth foot x 400. 

 ,, 7. „ ,, ? , receptaculum seminis x 200. 



., 8. „ „ $ , last joint of inner ramus of fourth 



pair of feet x 450. 

 „ 9. „ „ ?, furca x 175. 



Tuwra. Quekctt Microscopical Club, Ser. 2, Vol. IX., No. 54, April 1904. 



