42 Praeger — Fossils at Alexandra Dock, Belfast. 



Cardlum echlnatum, Linn. 



In the deep-water clay fine specimens of this beautiful species are abundant. 



Worn single valves are common in the overlying yellow sand. 

 Cardlum exiguum, Gmel. 



Diffused through the deposits, but scarce, and usually as single valves, 

 f Cardlum nodosum, Tart. 



The upper clay yielded one small valve of this species, so rare as an 



Estuarine Clay fossil. 

 Cardlum edule, Linn. 



In the top clays and yellow sand abundant and large, not uncommon in the 



upper clay, and in the lower clay very abundant, but of small size. 

 Cardlum edule, var. rustlcum, Chemn. 



Some very oblique valves probably belong to this variety. 

 Cardlum Norvegricum, Speng. 



This fine shell is very rare. A single valve was discovered in the upper 



clay, and another in the blackish sand of the outer entrance section. (One 



valve, Grainger. Two or three valves, Stewart). 

 Cyprina Islandlca, Linn, 



Beyond the complete specimen mentioned in my paper (p. 34), the only 



evidence of the occurrence of this large shell was the fragments of one 



great valve, which had been some five inches in breadth, which I found in 



the yellow sand. (One perfect specimen, Stewart). 

 Venus lincta, Fidt. 



Eare ; a few single valves scattered through the top clays and yellow sand. 



* Venus exoleta, Linn. 



Very rare ; three single valves occurred in the yellow sand. 

 Venus Gallina, Linn. 



Distributed through the upper and lower clays, but of small size. 



* Venus fasciata, Da Costa. 



A single valve in the yellow sand. 

 Tapes aureus, Gmel. 



Frequent, and scattered throughout. 

 Tapes aureus, var. ovata, Jeff. 



Very rare. (Not uncommon, Stewart). 

 Tapes pullastra, Mont. 



In the upper clay and yellow sand, where it attains an unusual size. 



(Frequent, especially in the lower zone, Stewart). 

 Tapes decussatus, Linn. 



In the yellow sand very large valves are frequent. In the upper clay it is 



uncommon, but large ; and in the lower clay it occurs in profusion, but 



