216 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 54. 



Genus ECPHORA Conrad. 



Ecphora Conbad, Proc. Acad. Nat. Sci., Phila., vol. 1, 1843, p. 310. — Dall, 

 Trans. Wagner Inst., vol. 3, 1890, p. 124. Type, Fustis quadricostatus 

 Say, Miocene, Maryland. 



Shell vertically depressed, few whorled, the last much the largest ; 

 structure of shell Chrysodomoid ; sculpture of few strong spiral 

 ribs; canal short, very deep and narrow with a large, funicular um- 

 bilical pit. 



Stenomphalus Sandberger, 1853, from the North European Mio- 

 cene, appears to represent this form on the other side of the Atlantic, 

 but I have not been able to examine a specimen. 



Genus COLUS Bolten. 



Colus Bolten, Mus. Boltenianum, 1798, p. 117, edition of 1819, p. 82. No 



type selected. 

 Neptunea B Link, Beschr. Rostock Samml., vol. 3, 1807, p. 117. No type 



selected. 

 Tritonofusus Beck, Amtl. Ber. d. 24 Vers. Deutsche Naturf., Kiel, 1847, 



p. 114. Type, Fusus islandicus Chemnitz. — Heekmannsen, Ind. Gen. 



Mai., vol. 2, 1849, p. 611.— Dall, Proc. U. S. Nat. Mus., vol. 24, No. 1264, 



1902, p. 522. Not of Morch, Fort. ov. Gronl. Bloddyr, 1857, p. 13. 

 Neptunella Verkill, Inv. An. Vineyard Sound, 1873, p. 637 ; Amer. Journ, 



Sci., ser. 3, vol. 6, 1873, p. 439. Type, Fusus pygmaeus Gould. Not 



Neptunella Meek, 1864. 

 Siphonella Vebkill, Checkl. Mar. Inv. Atlantic Coast, 1879, p. 20 (New name 



for Neptunella preoccupied). Not Siphonella Hagen, 1851, Insecta. 

 Sipho MoBCH, Cat. Yoldi, vol. 1, 1852, p. 104. Not Sipho of Fabricius, 1822, 



or of Brown, 1844, or SypJio of Brown, 1827. 

 Fusus of many Authors, but not of Helbling, 1779. 

 Colus Dall, Journ, Conch. (Leeds), vol. 11, No. 10, 1906, p. 294. Type, 



Murex islandicus Gmelin. 

 Sipho Dautzenbeeg and Fischer, Res. Camp. Scientifiques de Monaco, livr. 



37, 1912, p. 81. Type, Buccinum gracile Da Costa. 



Shell long-fusiform, slender, with numerous moderately rounded 

 whorls, the nucleus Chrysodomoid, the shell structure usually white, 

 often with a chalky external layer under a conspicuous, usually 

 brownish, adherent periostracum; sculpture spiral, seldom very 

 strong, sometimes nearly obsolete, never axially plicate or ribbed; 

 aperture of moderate size, the outer lip simple, acute, not thickened 

 or reflected, rarely slightly expanded ; pillar smooth, the inside of the 

 outer lip not Urate or denticulate; canal varying in length, usually 

 somewhat tortuous or, when short, recurved; operculum filling the 

 aperture, formed as in Chrysodomus. Radula like Chrysodomus^ the 

 minor cusps variable, the rhachidian tooth always cuspidate. Ovi- 

 capsules solitary, lentiform or hemispherical, attached by the whole 

 of the flat side, usually with several enclosed young. Nepionic shells 



