26 FAUNA OF NEW ENGLAND. 



*Syniphynota costata (Rafinesque). 



Simpson, Descriptive Cat. Naiades, 1914, p. 488. 



Alasmidonta costata Rafinesque, Ann. Gen. Sci. Phys. Bruxelles, 

 1820, vol. 5, p. 318, pi. 82, figs. 15, 16. [Kentucky River.] 



Alasmodonta rugosa Barnes, Amer. Joum. Sci., 1823, ser. 1, vol. 6, 

 p. 278, pi. 13, fig. 21. C. B. Adams, Thompson's Hist. Vt., 1842, 

 pt. 1, p. 165. 



Vt. — Chimney Point, Lake Champlain and streams west of the 

 Green Mountains (Adams). 



* Alasmidonta undulata (Say). 



Simpson, Descriptive Cat. Naiades, 1914, p. 494. 

 Monodonta undulata Say, Nich. Encycl., 1816, vol. 2, pi. 3, fig. 3. 

 " Del.\ware ANT) Schuylkill Rivers." 



Margaritana undulata Gould, Inv. Mass., 1870, p. 176, fig. 478. 



Me.^ Eagle Lake; Fish River; Androscoggin River; Rangeley; 

 Warren. 



N. H. — Concord ; Connecticut, Hanover. 



Vt.' — Hartland. 



Mass. — Milton; Sudbiu-y; Wellesley; Andover; Blackstone 

 River, L'xbridge. 



R. I. — Blackstone River, Pawtucket; Warwick. 



Conn. — Connecticut and Housa tonic River; Meriden. 



*Alasmidonta heterodon (Lea). 



Simpson, Descriptive Cat. Naiades, 1914, p. 499. 

 Unio heterodon Lea, Trans. Amer. Phil. Soc, 1830, new ser., 

 vol. 3, p. 428, pi. 8, fig. 11. " Schuylkill and Derby Creek, Pa." 



N. H. — Connecticut River, at Hanover and Cornish. 

 Vt. — Connecticut River, at Hartland. 

 Mass.— Westfield. 



Conn. — Connecticut River; Little River; Housatonic River; 

 Meriden. 



