134 Journal of the Mitchell Society {February 



One worn right valve. 

 Phacoides {Parvilucina) muUilineatus (Tuomey & Holmes). A J 



Dall, U. S. Nat. Mus. Proc, vol. 23, p. 825, pi. 39, fig. 2. 



Common, inside. 

 Divaricclla quadrisulcata (Orbigny). S C O A J 



Dall, U. S. Nat. Mus. Bull. 37, pi. 58, fig. 6. 



Common, both inside and out. 



Called Lucina strigillia by Stimpson and Coues. 



No specimens of D. dentata were found, ditto Aller. 

 Diplodonta soror (C. B. Adams). S C J 



Figure 172. 



Five valves, inside. 



"This well-characterized species is notable for its microscopic shagreening 

 « on the posterior slope and the compression of that part of the valve" 



(Dall). 

 Aligena elevata (Stimpson). 



Dall, U. S. Nat. Mus. Bull. 37, pi. 68, fig. 6. 



Two left valves, inside. 

 Montacuta (Orobitella) floridana Dall. 



Dall, U. S. Nat. Mus. Proc, vol. 21, pi. 87, fig. 10. 



Two right valves, inside. 

 Cardium (Trachycardium) isocardia Linne. S C A J 



Arnold, Sea-beach at Ebb-tide, p. 454, fig. 2. 



Occasional, both inside and out. 

 Cardium (Trachycardium) muricaium Linne. S C A J 



Rogers, Shell Book, p. 356, fig. 3. 



Occasional, inside and out. (See Aller.) 

 Cardium (Cerastoderma) robustum Solander. S C O A J 



Rogers, Shell Book, p. 356, fig. 2. 



Very abundant on outer beach. 

 Cardium (Laevicardium) serratum Linne. S C J 



Arnold, Sea-beach at Ebb-tide, p. 454, fig. 3. 



Occasional, mostly inside. 

 Cardium {Laevicardium) mortoni Conrad. S C A J 



Dall, II. S. Nat. Mus. Bull. 37, pi. 58, fig. 8. 



Fairly common, inside. 

 Dosinia (Dosinidin) discus (Reeve). S C O A J 



Dall, U. S. Nat. Mus. Proc, vol. 26, pi. 12, fig. 1; and pi. 13, fig. 1. 



Common, inside and out. (See Aller.) 



D. elegans Conrad is undoubtedly present but I am unable to report it. 

 Macrocallista nimbosa (Solander). S C O A J 



Arnold, Sea-beach at Ebb-tide, p. 450, fig. 2. 



Common on the sandy beaches a few inches deep between tide lines. (See 

 Coues for general notes.) 

 Macrocallista (Chionella) maculata (Linne). S J 



Arnold, Sea-beach at Ebb-tide, p. 450, fig. 3. 



One valve, inside. 

 Callocardia {Agriopoma) morrhuana (Linsley). C J 



