On the Mollusoa of Long Island. 161 



53. Anomia ejphippium Linn, and varieties electrica and 

 squamula. Extremely abundant. Low water to ten fathoms. 



54. Anomia aouleata Gmelin. A number of specimens were 

 obtained from the roots of large seaweeds, brought up by stones, 

 together with Saxicava distorta, and Mytilus edulis. 



55. Pecten irradians Lamarck. Extremely abundant. In 

 winter I have seen ridges a foot high, of the living shells, driven 

 up by a storm, lining the shore for long distances. The finely- 

 colored and rayed varieties are also extremely abundant. Low 

 water to three or four fathoms. 



56. Mytilus decussatus Mont.= Modlola glandula. A few 

 dead specimens were dredged in Gardiner's Bay. 



57. Mytilus corrugatus Sii7npson=Modiola discors Gould 

 non Angl. fide Stirnpson. One living specimen dredged in 

 about five fathoms mud. • 



58. Myiilics loevigatus Stimjpson=Modiola discrejpans Gould. 

 One fresh valve found with the preceding. 



59. Mytilus edulis Linn. Not abundant. Littoral. 



60. Mytilus modiolus Linn. Abundant — to ten fathoms. 



61. Mytilus plicatuliis Deshayes. Abundant. Littoral. 



62. Area transversa Say. Abundant. Three to ten faths. 



63. Area pexata Say. Rare. 



64. Niicula 'proxima Say. Abundant. Two to ten faths. 



65. Leda limatula Stimjpson. Eare. Two to five faths. mud. 

 %^. Leda sajpotilla Stimjpson. Rare and small. Three faths. 



mud. 



67. Solemya velum Say. Rare. Two to ten faths, mud and 

 sand. Once, in winter, when the ice which had fringed the 

 shore disappeared, a very great number of unusually large ones, 

 containing the animal, were found floating at the water's edge 

 on a mud-flat where only one or two fathoms water existed for a 

 long distance out, and where I have only once succeeded in 

 dredging a fewt very small ones. The animal is extremely 

 active. 



68. Solemya borealis Totten. A fragment of a Solemya, 



