POST-TERTIARY FOSSILIFEROUS DEPOSITS. 35 



Cythere concinna, Jones,^ 



— Dunelmensis (Norman). 

 Cytheridea papulosa. Bosquet. 



— pimctillata, Brady. 

 CytJierura nigrescens (Baird). 



— undata, G. 0. Sars. 



— (jibba (Midler). 



— cellulosa (Norman). 



— clathrata, G. O. Sars. 

 Cytheropteron latisshmim (Norman). 

 Bythocythere simplex (Norman). 

 Sclerochilus contortus (Norman). 



5. Go VAN. 



In the excavations for Messrs. Randolph and Elder's docks two beds of clay were 

 exposed. 



1. The upper bed was composed of sand, gravel, and sandy mud, and dipped towards 



the Clyde. The section was — 



a. Mould 4 ft. 



b. Black vegetable matter, crowded with leaves, fragments of 



twigs, &c. ......... 1 



c. Gravel and sand alternating ...... 4 



d. Muddy sand (not pierced through) ..... 



In the muddy sand Pecten opercularis and TrocJius cinerarius were met with. 



2. The lower bed Avas not detected in the section immediately beneath the upper, but 

 made its appearance at a little distance, dipping away from the river and then rising 

 upwards. At a depth of eighteen feet marine shells were sparingly collected, including 



Cyprina Islandica, 

 Tellina calcarea, 

 Myiilus ediilis, 

 Buccimim undatimi, 

 Balamis cre7iatas. 



The Ostracoda from this lower bed proved precisely the same as those common in the 

 1 The remains of the limbs are distinctly visible iu some specimens of this species from this 



bed. 



