58 



POST-TERTIARY ENTOMOSTRACA. 



Cytliere limicola (Norman). 



— villosa (G. 0. Sars). 



— concinna, Jones. 



— angidata (G. 0. Sars). 



— tiiberculata (G. 0. Sars). 



— Dimehne7isis (Norman). 

 Cytlieridea pa^nllosa, Bosquet. 



— jmmtillata, Brady. 

 Eucythere Aryus (G. 0. Sars). 

 Loxoconclia tamarindus (Jones). 

 Cytherura niyrescens (Baird). 



— similis, G. 0. Sars. 



— undata, G. 0. Sars. 



— striata, G. 0. Sars. 



— Sarsii, Brady. 



— Jlavescens, Brady. 

 Cytheropteron latissimmn (Norman). 



— nodosum, Brady. 



— angidatum, Brady and Robertson. 

 Sclerochilus contortus (Norman). 

 Paradoxostoma variahile (Baird). 



— ensiforme, Brady. 



15. East Tarbert, Loch Fine. 



On the north side of the Tarbert Loch, at the north-east corner, a small stream, 

 called the Black Burn, cuts into a bed of clay containing Arctic shells, which can be 

 traced from twelve to fifteen feet above high-water mark. 



The shell-bearing clay is of a light grey colour and lies at an incline of one foot in 

 ten. It is overlaid by five or six feet of brown stony mould washed down from the 

 hillside. In washing through a sieve of 96 meshes to the inch, 100 parts of the 

 dry material lost thirty, while ten parts of the residue were retained in a sieve of 

 l^-inch mesh and consisted of coarse gravel ; the other sixty parts were composed of fine 

 gravel and sand. The presence of water-worn specimens of species, natives of different 

 habitats, raises a suspicion that they may have been brought after death from greater 

 or less distances ; although some specimens which have their colour and epidermis 

 preserved are evidently on the ground on which they lived. 



