64 



POST-TERTIARY ENTOMOSTRACA. 



Paradoxostoma variabile (Baird). 



— ahhreviatum, G. O. Sars. 



— Fischeri, G. 0> Sars. 



— Jlexiiosum, Brady. 



18. Crinan. 



This bed was opened by a cutting made to lead off the water from the high level on 

 a small plateau at the north side of No. 11 Lock on the Crinan Canal. 



A few feet only of the clay are exposed, and the shell-bearing portion is a thin 

 stratum, in which broken shells, Balani plates, and spines of Echini are seen sparsely 

 scattered. The shells are of Arctic species, including Astarte horealis, Tellina calcarea, 

 Pleurotoma pyramidalis, and Velutina lavigata, but so fragmentary as to be deter- 

 minable with difficulty. The Balani — B. crenatus, B. porcatus, and Verruca Stroemii 

 — are more abundant and less broken, but of small size. 



The clay is reddish-brown and loses 66 per cent, in washing. 



Height above the sea thirty feet. 



The following Ostracoda were found : 



Cytliere lutea, Miiller. 



— villosa (G. O. Sars). 



— concinna, Jones. 



— angulata (G. 0. Sars). 



— tuherculata (G. O. Sars). 

 Cytlieridea punctillata, Brady. 

 Krithe Bartonensis (Jones). 

 Loxoconcha impressa (Baird). 



— tamarindus (Jones). 

 Cytherura undata, G. 0. Sars. 



— clatJirafa, G. 0. Sars. 

 Cytheropteron latissimum (Norman). 



— nodosum, Brady. 



— angulatum, Brady and Robertson. 

 Sclerochilus contortus (Norman). 



I 



