Distribution of the British Ostracoda. 



53 



also the contents of one dredging made by Mr. Robertson in 

 Stromness Bay. 



Pontocypris mytiloides {Normmi). 



trigonella, G. O. Sars. 



Bairdia inflata (Norman). 

 Potamocypris fulva, Brady. 

 Cythere pellucida, Baird. 



castanea, G. O. Sars. 



porcellanea, Brady. 



tenera, Brady. 



crispata, Brady. 



viridis, Midler. 



lutea, 3Iidler. 



villosa {G. O. Sars). 



albomacidata, Baird. 



convexa, Baird. 



cimeiforrais, Brady. 



finmarchica {G. O. Sars). 



tuberculata {G. O. Sars). 



pulchella, Brady. 



angulata (G. O. Sars). 



qiiadridentata, Baird. 



emaciata, Brady. 



dunelmensis ( Norman). 



Jonesii, Baird, 



(?) acerosa, Brady. 



Loxoconclia tamarindus (Jones). 



impressa (Baird). 



guttata (Norman). \ 



Loxoconcha midtifora (Norman). 

 Ilyobates bartonensis (Jones). 

 Xestoleberis depressa, G. O. Sars. 

 Eucy there Ai'gus (G. O. Sars). 



declivis (Norman). 



Cytheridea elongata, Brady. 

 Cytherura nigrescens (Baird). 



similis, G. O. Sars. 



affinis, G. O. Sars. 



undata, G. O. Sars. 



striata, G. O. Sars. 



flavescens, Brady. 



cuneata, Brady. 



angulata, Brady. 



gibba (Midler). 



acuticostata, G. O. Safs. 



cellulosa (Norman). 



Pseudocythere caudata, G. O. Sars. 

 Cytheropteron latissimum(iVo?-m«M). 

 Bytbocythere constricta, G. O. Sa7-s. 

 Cytherideis subulata, Brady. 

 Sclerochilus contortus (Norman). 

 Paradoxostoma rariabile (Baird). 



abbreviatum, G. O. Sa7's. 



flexuosum, Brady. 



ensiforme, Brady, 



orcadense, n. sp. 



Paradoxostoma orcadense, n. sp. PI. I. figs. 5-7. 



Carapace, as seen from the side, elongated, subreniform or 

 subtriangular, highest near the middle, lower in front than 

 behind ; height much less than half the length ; extremities 

 rounded, the anterior being the narrower : superior margin 

 sloping gently forwards almost in a right line from its highest 

 point, but well arched behind ; inferior sinuated in the middle. 

 Seen from above, ovato-cuneate, widest near the posterior ex- 

 tremity ; width equal to nearly one third of the length, sub- 

 acuminate in front, rounded behind. Animal unknown. 

 Length ^ inch. 



Hab. Stromness Bay, Orkney ; sandy bottom. 



South Wales and Bristol Channel. 

 Canal and Dykes on Cardiff" Moor. 



Cypris reptans (Baird), 



prasma, Fischer. 



gibba, Ramdohr. 



compressa, Baird. 



Cypridopsis vidua [Miiller). 



obesa, B. <§• R. 



aculeata (Lilljehorg), 



Potamocypris fiilva, Brady. 



Candona Candida (Midler). 



albicans, Brady. 



lactea, Baird. 



hyalina(?),i?. c^-i?. 



Limnicytbere inopinata (Baird). 

 Cytheridea torosa, Jones (var. 



teres). 

 Darwinella Stevensoni, B. Sf R. 



