262 Malcomson. — Recent Ostracoda of Belfast Lough. 



the deeper water, although the first specimen was in shore sand from 

 Portrush, whore it had probably been washed up. Dr. Brady informs 

 me that my specimens differ from the types obtained by him from the 

 Gulf of St. Lawrence, in being rather stouter, less depressed in front, 

 less distinctly punctated, rather smaller, and in having the ventral over- 

 lap of the valves in the opposite direction. 



Paradoxostoma truncatum, n. sp. (Plate xxv., figs. 3-4.) About a 

 dozen specimens of this species have been found in a single locality off 

 Coalpit Bay, but it has not been seen anywhere else. Carapace, as seen 

 from the side, compressed, irregularly ovate, greatest height in the 

 middle, and equal to rather more than half the length. Anterior margin 

 nearly straight, and sloping upwards almost at right angles to the ante- 

 rior part of the dorsal margin ; posterior extremity evenly rounded. 

 Superior margin well arched, sloping somewhat steeply in front ; inferior 

 sinuated in front of the middle. Outline, as seen from above ovate- 

 extremities pointed, widest in the middle ; greatest width equal to rather 

 more than one-third the length. Valves pellucid, white, or slightly 

 ochreous. Length, l-60th inch. 



Cytlierella Scotica, Brady. Onjy.a single valve of this species has been 

 found. . ', .\ 



-V ... /• • ., ., . 

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