THE NAUTILUS. 91 



the land. The "banks" wherever submerged, are covered 

 with Modiolus plicatulus among which and over which crawl 

 Littorina littorea and L. rudis. The third station (3) is inside 

 the isthmus which encloses the bay near the second station. 

 Here there is an eel-grass bed which is exposed at low water. 



The only species of note at Rockaway Beach (4) is Astarte 

 castanea which can be picked up in front of or a little beyond 

 the hospital to the west of the pleasure beach. Far Rockaway 

 Beach (5) yielded the greatest number of species. This is 

 especially due to the rift of fine shell material left by the 

 receding tide at the angles of the bar which begins to the 

 west of the "bathing beach." 



The numbers in the following list correspond to the stations 

 as designated above. 



Pelecypoda. 



Nucula proximo, truncula Dall. A valve at 5. 



Yoldia sp ? Fragment at 5. 



Area campechiensis pexata Say. Generally distributed. 



Area transversa Say. Less common than preceding. 



Ostrea virginica Gmelin. Generally distributed. 



Pecten gibbus borealis Say. Most common at 4 and 5. 



Anomia simplex d'Orbigny. Generally distributed. 



Mytilus edulis Linnaeus. Generally distributed. 



Mytilus edulis pellucidus Pennant. Not as common as on 

 Conn, coast. 



Modiolus demissus plicatulus (Lam.). Local. Abundant 

 where found. 



Periploma leanum (Conrad). Rare and only at 1. 



Pandora gouldiana Dall. One valve at 1. 



Lyonsia hyalina (Conrad). Only at 1. 



Astarte castanea (Say). At 4, very small specimens at 5. 



Venericardia borealis (Conrad). Only at 5. 



Divaricella quadrisulcata (d'Orbigny). Occasional at 4 

 and 5. 



Rochefortia planulata (Stimpson). Occasional at 5. 



Aligena elevata (Stimpson). Not as common as preceding. 



Cardium pinnulatum Conrad. One valve at 5. 



