PELECYPODA. 65 



Thyasira (Axinulus) ferruginosa (Forbes). I 



Dall, Proc. U. S. Nat. Mus., 1901, vol. 23, p. 787. 



Kellia ferruginosa Forbes, Rept. Brit. Assoc. Adv. Sci. for 1843, 

 1844, p. 192. [MoREA.] 



Cryptodon (Axinulus) f err uginosus Verrill and Bush, Proc. U. S. 

 Nat. Mus., 1898, vol. 20, p. 793, pi. 87, figs. 7, 8. 



Mass.— Off Marthas Vineyard, 153 to 500 fathoms. 



Thyasira (Axinulus) ovata (Verrill and Bush). 



Cryptodon (Axinulus) ovatus Verrill and Bush, Proc. U. S. Nat. 

 Mus., 1898, vol. 20, p. 793, pi. 91, fig. 7, pi. 93, fig. 1. [off 

 Marthas Vineyard.] 



Mass. — South of Marthas Vineyard, 100 fathoms. 



Thyasira (Axinulus) succisa (Jeffreys). 



Dall, Proc. U. S. Nat. Mus., 1901, vol. 23, p. 788. 



Axinus incrassatus var. succisa Jeffreys, Ann. Mag. Nat. Hist., 

 1876, ser. 4, vol. 18, p. 492. " North Atlantic and Mediter- 

 ranean." 



Off New England, 92 to 1366 fatlioms. 



Axinopsis orbiculata G. O. Sars. 



G. O. Sars, Moll. Reg. Arct. Norv., 1878, p. 63, pi. 19, figs, lla-d. 

 " Vads0." Verrill, Trans. Conn. Acad., 1882, vol. 5, p. 569. 

 Dall, Proc. U. S. Nat. Mus., 1901, vol. 23, p. 789. 



Me. — Broad Sound, Casco Bay, 15 to 30 fathoms; French- 

 man's Bay, 15 fathoms. 



Axinopsis orbiculata inequalis Verrill and Bush. 



Verrill and Bush, Proc. U. S. Nat. Mus., 1898, vol. 20, p. 794, 

 pi. 92, figs. 5, 6. " Bay of Fundy." 



Me. — Frenchman's Bay, 15 fathoms. 

 Mass. — Off Cape Ann, 18 to 26 fathoms. 



