54 



Messrs. Brady and Robertson on the 



Off Penarth Head (muddy bottom). 



Cypris compressa, Baird, 



gibba {Hamdohr). 



cambrica, nov. sp. 



Cypridopsis obesa, B. Sf JR. 

 Candona albicans, Brady. 

 Potamocypris fulva, Brady. 

 Pontocypris mytiloides {Norman). 

 Argilloecia angustata (Brady). 

 Cythere castauea, O. O. Sars. 



porcellanea, Brady. 



tenera, Brady. 



JeiFreysii, Brady. 



viridis, Muller. 



villosa {G. O. Sars). 



Limnicythere inopinata (Baird). 

 Xestoleberis aurantia (Baird). 



Loxoconcha granulata, G. O. Sars. 



guttata (Norman). 



tamarindus (Jones). 



Cytherura nigTescens (Baird). 



striata, G. O. Sars. 



cuneata, Brady. 



quadrata, Norman. 



acuticostata, G. O. Sars. 



cellulosa (Norman). 



Cytlieropteron punctatum, Brady. 

 Cytherideis subulata, Brady. 

 Paradoxostoma variabile (Baird). 



abbreviatum, G. O. iSars. 



ensiforme, Brady. 



flexuosum, Brady. 



Ufracomhe, off Lantern Hill (3-8 fathoms). 



Cythere albomaculata, Baird. 



lutea, Miiller. 



villosa ( G. O. Sars). 



convexa, Baird. 



crispata, Brady. 



viridis, lliiller. 



cuneiformis, Brady. 



pellucida, Baird. 



castanea, G. O. Sars. 



tenera, Brady. 



Robertsoni, Brady. 



finmarchica (6-'. O. Sars). 



semipunctata, Brady. 



pulchella, Brady. 



emaciata, Brady. 



Cytheridea elongata, Brady. 

 Eucythere Argus (G. O. Sars). 

 Loxoconcha impressa (Baird). 



Loxoconcha tamarindus (Jones). 



guttata (Norman). 



multifora (Norman). 



Xestoleberis aurantia (Baird). 

 Cytherura flavesceus, Brady. 



nigrescens (Baird). 



striata, G. O. Sars. 



Oytheropteron pyramidale, Brady. 

 Bythocythere constricta, G. O.Sars. 

 Cytherideis subulata, Brady. 

 Sclerochilus contortus (Norman). 

 Paradoxostoma variabile (Baird). 



abbreviatum, G. O. Sars. 



ensiforme, Brady. 



obliquum, G. O. Sars. 



hibernicum, Brady, 



Asterope teres (Norman). 



The gatherings from Cardiff Canal and Dykes appear to 

 show some slight admixtm'e of salt water, while, on the other 

 hand, that from Penarth Head contains several Cypridse, 

 which we must suppose to have been derived from some 

 neighbouring freshwater outlet ; it is scarcely likely that 

 Cypris comjnessa^ G. gihha, Cypridopsis ohesa, Candona albi- 

 cans, or Limnicythere inopinata are permanently established in 

 a living condition in absolutely salt water, though the shells 

 of several of these show that they must have been either living 

 or only recently dead when captured. We should have been 

 disposed to class Cypris cambrica in the same list ; but the 

 former being unknown as a freshwater species, and bearing at 

 the same time a strong resemblance to " Cytheridea'''' zetlandica.^ 

 which was taken undoubtedly living between tide-marks, we 



