56 



Messrs. Brady and Robertson on the 



shows that the figures and descriptions originally given in the 

 " Monograph of Recent British Ostracoda " require emenda- 

 tion. The conspicuously angular example from which the 

 figures were drawn was probably a male, and is a much less 

 common form than that now described. 



Carapace, as seen from the side, elongated, flexuous, rather 

 narrower in front than behind ; greatest height equal to one 

 third of the length, and situated near the middle ; extremities 

 tapering, rounded ; superior margin well and evenly rounded, 

 inferior deeply sinuated in front of the middle. Seen from 

 above, compressed, oblong, tapering to the extremities, which 

 are acuminate ; greatest width in the middle, and equal to less 

 than one fourth of the length. Shell thin and fragile, smooth; 

 when viewed with a high power, it is, if in good condition, 

 seen to be marked with very delicate and closely set longitu- 

 dinal striations. Length -^ inch. 



5. Northumberland and Durham District. 



Lochend Loch, Edinburgh*, 



Cypris gibba, Ramdohr. 



reptans (Batrd). 



compressa, Baird. 



Candona Candida (Muller). 

 compressa {Koch). 



Bolam Lake, Northumberland. 



Candona albicans, Brady. 



lactea, Baird. 



Goniocypris mitra, B. Sr R- 

 Limnicytbere inopinata, Baird. 



Cypris compressa, Baird. 



• Isevis, Miiller. 



Cypridopsis vidua {Muller). 



Candona Candida (Miiller). 

 Cythere albomaculata, Baird. 

 Limnicytbere inopinata (Baird) . 



Belsay Lake, East, Northumberland. 



Cypris reptans (Baird). 



gibba, Ra7ndohr. 



compressa, Baird, 



ovum (Jurine). 



Cypris Isevis, Muller. 

 Candona Candida (Miiller). 



lactea, Baird. 



Limnicytbere inopinata (Baird). 



Pond on Boldon Flats, near Sunderland. 



Cypris reptans (Baird). 



gibba, Ramdohr. 



compressa, Baird. 



Cypris leevis, Muller. 

 Candona Candida (Miillei-). 

 similis, Baird. 



Seaton Burn, Northumberland, above the Sluice. 



Cypris reptans (Baird). 



gibba, Ramdohr. 



prasina, Fischer. 



Candona Candida (Muller). 

 Cythere castanea, G. O. Sars. 

 porcellanea, Brady. 



Cythere gibbosa, B. ^ R. 

 Limnicytbere inopinata (Baird). 

 Cytheridea torosa (Jones), var. 



teres. 

 Loxoconcha elliptica, Brady. 

 Cytherura Robertsoni, Brady. 



* This locality, though not coming with geographical accuracy under 

 our fifth beading, may be regarded as belonging to the same zoological 

 province. 



