216 DR. G. S. BRADY ON THE [Feb. 1, 



Ilyodromus olivaceus Brady & Norman. (Plate XXIX. 

 figs. 8-11.) 



1889. Erpetocypris olivacea Brady & Norman, (2) Parti, p. 89, 

 pi. viii. figs. 3, 4. 



1891. Ilyodromus olivaceus Vavra, (6) p. 88, fig. 29. 1-4. 



1896. Ilyodromus olivaceus Brady & Norman, (2) Part ii. 

 p. 724. 



1900. Ilyodromus olivaceus Kaufmann, (4) p. 299, pi. xx. 

 figs. 7-9, pi. xxi. figs. 17-21. 



It is needless to repeat the descriptions already given (loc. cit.) 

 of this species, but, for the sake of comparison with the closely 

 allied I. robertsoni, I give drawings of some of the more charac- 

 teristic parts of the animal. The types of I. olivaceus were 

 found in the River Lathkill, Derbyshire. It has since been taken 

 by Dr. T. Scott in several Scottish localities, and has also been 

 recorded by Dr. Kaufmann as occurring in Switzerland, by 

 Dr. Vavra in Bohemia, and at Moscow by Oroneberg. 



The works referred to by numerals in the text are as 

 follows : — 



(1) Brady, G. S. — A Monograph of the recent British Ostracoda 



(Transactions of the Linnean Society, vol. xxvi.), 1866. 



(2) Brady, G. S., & Norman, A. M.— A Monograph of the 



Marine and Freshwater Ostracoda of the North Atlantic 

 and of North- Western Europe. Section I. Porlocopa. 

 (Scientific Transactions of the Royal Dublin Society, vol. iv. 

 series ii.), 1889. Part ii. Myodocopa, Cladocopa, and 

 Platycopa, 1896, 



(3) Hartwig, W. — Ueber die Arten der Ostracoder Unterfamilie 



Candoninre der Provinz Brandenburg (Sitzungs-Bericht 

 der Gesellschaft Naturforschender Freunde zu Berlin), 

 1902. 



(4) Kaufmann, A. — Cypriden und Darwinuliden der Schweiz 



(Revue Suisse de Zoologie), 1900. 



(5) Muller, G. W. — Deutschlands Siisswasser-Ostracoden. Stutt- 



gart, 1900. 



(6) Vavra, Wenzel. — Monographie der Ostracoden Bohmens 



(Archiv der Naturwissensch. Landesdurchforschung von 

 Bohmen), 1891. 



(7) Baird. — Natural History of the British Entomostraca 



(Ray Society), 1850. 



(8) Brady, G. S., & Robertson, D. — The Ostracoda and Foramin- 



ifera of Tidal Rivers (Ann. & Mag. Nat. Hist. ser. 4, 

 vol. vi.), 1870. 



(9) Fischer, S. — Ueber das Genus Cypris (Memoires des Savants 



etrangers, t. vii.), 1851. 

 (10) Scott, T. — A Catalogue of Land, Fresh-water, and Marine 

 Crustacea found in the Basin of the River Forth and its 

 Estuary. 1906. 



