NO. 1210. SYNOPSIS OF NORTH AMERICAN TELLIXIDA^lJALL. 299 



Uirlafmca Conrad, 1831; Tellina inconsjjicua Broderip mid 8owerl)v, 

 1821); Tdllna tenera Morch, 1857, not of Say, 1.S22; Tdllna fahrlcll 

 Hanley, 1847; Tdl'ma fraijilh MoUer, 1812, not of Linnaeus; Tellina 

 moUeri Deshayes, and Tellina dithia Dcshayes, 1854, and probably 

 TeJlina plciui Soworby, 1808; are S3'nonyiiious. 



The orijrinal TeUlna halthica was the thin form from the Baltic, not 

 the solid Tellina solidula Pultcney, which is l)etter known to collect- 

 ors. The former is identical with our common American type. 



MACOMA CALCAREA (Gmelin) , 1792. 



Arctic and boreal seas generally, south to Boston Bay and Long 

 Island Sound, on the east coast of America. 



Tdllna lata Gmelin, 1792; Macmna tenera Leach, 1819; Tellina 

 sdbuloHa Spengler, 1798; Tellina jiroxima (Brown manuscript) Sow- 

 erby, 1839; Tellina sordida Couthouy, 1838, and pro})ably Tellina 

 helchei'i Scwerby, 1868, are among the synon3"ms. The species pre- 

 fers deep water, or, at least, is not littoral or estuarine. 



MACOMA INFLATA (Stimpson), 1893. 



Spitsbergen, Greenland, Gulf of St. Lawrence, and south to lati- 

 tude 40°, in 57 to 206 fathoms. 



This species was named b}^ Stimpson in manuscript, and the name 

 published by Dawson, but the first real definition of that name is })y 

 Verrill and Bush.' Macoma 'laoesta Deshayes, 1854, is suspiciously 

 similar. 



MACOMA CERINA C. B. Adams, 1845. 



Southern Florida and the Antilles. The pallia! sinus is about iialf 

 confluent below. Tellina cerena Krebs, 1864, is identical. 



MACOMA LEPTONOIDEA Dall, 1895. 



Texas coast at Matagorda Bay (Lloyd), also California. The sinus 

 is short, high, and half confluent. 



MACOMA MITCHELLI Dall, 1895. 



Texas coast and north to Charleston, South Carolina. Si mis wholly 

 confluent below; form approaching Afiguhcs. 



MACOMA PHENAX Dall, 1900. 



Jerome Creek, Chesapeake Ba}^, Virginia, and Tampa Bay, Florida. 

 Closely resembles Tellina (Angidus) tenera Say externally. 



MACOMA TENTA Say, 1834. 



Cape Cod southward to Rio la Plata. 



In the warmei- waters from Florida southward this species takes on 

 a yellowish flush of color, in which state it is the Tellina souleyetianet 



iProc. U. S. Nat. Mus., p. 778, pi. 77, fig. 1, and pi. 88, fig. 6, 1898. 



