164 On the Mollusca of Long Island. 



85. Cumingia telUnoides Conrad. Single valves are very- 

 abundant in every dredging on sand}' or shelly ground, from 

 ten fathoms up to five, but I have only twice found it contain- 

 ing the animal. One of these was in mud, at low vs^ater mark 

 (in the same pond as TelUnafusca\ and was much thicker and 

 shorter than any others I have seen ; but Mr. Wra. Cooper is of 

 opinion that it is merely a distorted specimen, perhaps from the 

 influx of fresh water. 



86. Solen ensis Linn. Not very abundant. 



87. Solecurtus hidens Forbes c& Hanley. One or two dead 

 specimens. 



88. Mya arenaria Linn. Extremely abundant. 



89. Corhula contracia Say. Tolerably abundant dead (fre- 

 quently with the valves united), at every depth from ten faths. 

 up, but I have never obtained a living specimen. 



90. Anathia papyracea Say. Dredged, very rarely, in three 

 to five faths. muddy sand, in Gardiner's Bay. ' 



91. Coehlodesma Leanum Couthouy. A few specimens were 

 dredged in three fathoms sand, and dead valves occasionally 

 occur at all depths. After a violent easterly gale, a large num- 

 ber of fine specimens, containing the animal, were picked up 

 on the eastern side of Napeague Pt., together with numerous 

 specimens of Pandora triUneata, Petricola dactylus, P. jpliola- 

 diformis^ &c. 



92. Lyonsia hyalina Conrad. Dredged, rarely, from six 

 faths. upwards, generally in sand. Once, after a violent storm, 

 very numerous and fine specimens were driven up on a beach 

 facing an extensive mud flat ; and on another beach, also facing 

 a large mud flat, a few specimens, containing the animal, occur 

 after almost every south-east storm. 



93. Thracia Conradi Couthouy. A single valve, doubtfully 

 referred to this species by Mr. "Wm. Cooper, was dredged in 

 ten fathoms. 



94. Pandora trilineata Say. Rather rare in the Bays. 

 Dredged in from two to six faths. Great numbers, containing 



