EAST AMERICAlSr SCAPHOPOD MOLLUSKS. 35 



DENTALIUM (ANTALIS) ENTALE STIMPSONI, new name. 



Plate 4, figs. 2, 3, 4. 



1843. Dentalium entalis, Mighels, Boston Journ. Nat. Hist., vol. 4, No. 3, p. 330. 

 (Not Linnaeus.) 



1851. Dentalium striolatum Stimpson, Proc. Bost. Soc. Nat. Hist., vol. 4, p. 114. 

 (Not D. striolatum of Jeffreys, Watson, or Sars, nor of Risso, 1826.) 



1851. Dentalium striolatum Stimpson, Shells of New England, p. 28. 



1853. Dentalium, striolatum Stimpson, Marine Invert, of Grand Menan, Smith- 

 sonian Contrib. to Knowledge, p. 22. 



1860. Entalis striolata Stimpson, Smithsonian checklists East Coast, p. 4. 



1870. Entalis striolata, Binney, Gould Invt. of Mass., p. 266, fig. 528. 



1873. Dentalitvm striolatum,, Tryon, American Marine Conchology, p. 96, pi. 12, 



fig. 96. 



1874. Entalis striolata, Smith and Harger, Trans. Conn. Acad, of Arts and Sci., 



vol. 3, pt. 1, p. 23, pi. 1, fig. 3. 

 1880-81. Dentalium striolatum, Verrill, Proc. U. S. Nat. Mus., vol. 3, p. 408. 



1883. Dentalium striolatum, Bush, Fish Comm. Report for 1883, No. 17, p. 717. 



1884. Dentalium striolatum, Verrill, Trans. Conn. Acad, of Arts and Sci., vol. 6, 



pt. 1, pp. 276, 283. 

 1884. Dentalium striolatum, Verrill, Fish. Comm. Report for 1883, No. 16, p. 



573. 

 1887. Entalis striolata, Ganong, Bull. Nat. Hist Soc. of New Brunswick, vol. 6, 



p. 39. 

 1893. Dentalium striolatum Bush, Bull. Mus. Comp. Zool., vol. 23, No. 6, pp, 



224, 239. 

 1897. Dentalium (Antalis) entalis, Pilsbry and Sharp, Tryon's Man. of Conch.. 



vol. 17, p. 42, in part (not pi. 8, fig. 25). ■ 

 1901. Dentalium entalis, Whiteaves, Cat. Marine Inv. of E. Canada, p. 152 



(Ottawa). 

 1904. Dentalium entalis Plane y, Proc. Boston Soc. Nat. Hist., vol. 32, No. 2, 



p. 30. 

 1908. Dentalium entalis, Lermond, Shells of Maine, p. 15 (Thomaston, Maine). 

 1915. Dentalium entalis Johnson, Occasional Papers, Boston Soc. Nat. Hist., 



No. 13, p. 82. 



The shell is very moderately curved, and that chiefly in the pos- 

 terior fourth; with a rather rapid increase in diameter during the 

 first third; its section is round. The surface is of a dull ivory white, 

 usually more or less discolored. The outer shelly layer covers a 

 softer chalky middle layer, while the inner layer of the tube is hard 

 and smooth. The tips are almost invariably much eroded. Sculpture, 

 save for some longitudinal wrinkles in the posterior quarter or third 

 portion of the shell, is absent. These wrinkles are confined to the 

 outer shell layer and are not always readily observed. The surface 

 of the shell is not perfectly smooth because of irregularities of 

 growth, but the most smooth specimens never exhibit a polished or 

 shining surface. An apical notch is present on the convex side. 



Length, 33 mm.; diameter, 4.75 mm.; arc 2 (tip gone). Grand 

 Man an. 



Length, 38 mm.; diameter, 4.75 mm.; arc. 2 (tip gone). Grand 



Manan. 



