298 rnoCEEDINGS OF THE NATIONAL MUSEUM. 



STRIGILLA PISIFORMIS (Linnaeus), 1758. 



Florida Keys and Antillean fauna. 



Cardium. diseors Montagu, 1806, is probably synonymous. This 

 species is darker, less arcuate ventrally, and with less rude zigzag 

 sculpture than Str/gHlaJiexuosa S^y. StrigiUa jyi'odtict'i Tryon, 1870, 

 is markedly wider and more triangular. S. 2>^8'*foTmh was named 

 Lucina 2>ulchell a hy C. B. Adams in 1816. 



Genus TELLIDORA Morch. 

 TELLIDORA CRISTATA Recluz, 1843. 



North Carolina south to Trinidad. Also Pliocene. 

 Tellidora latadata Holmes, 1858, is synonymous. The left valve is 

 the flatter; in Tellidora hurneti Sowerby the reverse is the case. 



Genus METIS H. and A. Adams. 

 METIS INTASTRIATA (Say), 1827. 



Florida southward through the Antilles. 



The name was probably a misprint for interstriata. Tellina 

 gnmeri Philippi, 1815, Tellina inornata (Adams fide) Krebs, 1861, 

 not of Hanley, 1811, and Tellina lacuwmi Bertin (ex parte), 1878, 

 non Chemnitz, are S3mon3anous. The species has been confounded 

 with Macoma constricta Bruguiere by several authors, and with Metis 

 ephippiuiii Spengler, a Chinese species. 



Genus MACOMA Leach. 

 MACOMA CONSTRICTA (Bruguiere), 1792. 



New Jersey coast (Wheatley) south to Santa Caterina, Brazil. 



The sinus usually, but not always, touches the anterior adductor 

 scar; when shorter the right valve usually has it free. Tellina caijen- 

 nensis Lamarck (arj Psammolna), 1818, Tellina lateralis Say, 1827, and 

 Tellina inornata Adams are synonymous, and probably Tellina 

 suensmii (Morch manuscript) Deshayes, 1851. 



MACOMA KRAUSEI Dall, 1900. 



Spitsbergen, Greenland, and Bering Sea. 



MACOMA BALTHICA (Linnaeus), 1758. 



Arctic and boreal seas generally, and in cool water southward to 

 Ceorgia and the Mediterranean. In the north it is chiefly littoral, and 

 aflects localities where the water is slightly brackish. 



Venus frag Hi. '< O. Fabricius, 1780, not of Linnreus; Tellina gron- 

 landica (Beck) Lyell, 1839; Psamniobia fusca Sa}", 1827; Sanguino- 



