﻿I 34 SMITHSONIAN MISCELLANEOUS COLLECTIONS [VOL. 47 



Forms with short canal and longer spire, heavy varices and flat- 

 topped turriculate whorls. 



Section Tritoniscus Dall, nov. 

 Type Triton loroisii Petit. Recent. 



Forms with subturbinate body, short spire and canal, subumbilicate, 

 with a single large and heavy terminal varix and narrow callus on the 

 body. 



Section Cabcstana Bolten, 1798 



Type Murcx cutaceus Linne. Recent. Synonyms : Aquillus 

 Montfort, 1810; -f- Aquilus Morch, 1852; -\- Neptunella Gray, 

 Adams; -{-Dolarium Schleuter, Morch, etc. 



Ample, strongly sculptured, subumbilicate, with irregular varices, 

 short recurved canal and thin, mostly smooth callus on the body. 



Subgenus Monoplex Perry, 181 1 



Type Mnrex costatus Born (=M. olcarius Auct. non Linne). 

 Recent. Synonyms: Monoplex (Perry) Gray, 1847, not Morch, 

 1852 ; -\- Simpulum H. and A. Adams, 1853, not Fabricius, 1823. 



Forms with the shell resembling Cabestana but the operculum con- 

 centric with subapical nucleus, the varices heavier, and the body- 

 callus closely wrinkled. 



Subgenus Linatella Gray, 1857 



Type Triton cingulatitm Lamarck. Recent. Synonyms : Lina- 

 tella Gray; Morch, 1852; Fischer, 1884; not of H. and A. Adams, 

 1858; ? -j- Dolarium Schleuter, 1837; and Zinatella Cossmann, 

 1903. 



Thin Dolium-like shells, with feeble spiral sculpture and short 

 canal, a single feeble terminal varix and inconspicuous callosities. 

 Operculum as in Fusitriton and Gyrineum. 



Genus SEPTA Perry, 181 1 

 Type S\ rubicunda Perry, = Triton nodiferus Lam. Synonyms : 

 Triton (australe) Montfort, 1810, not of Linne, 1758; -f- Tritonium 

 Link, 1807, Cuvier, 181 7, Bowdich, Adams, Troschel, Dall, Rovereto, 

 Cossmann, etc., not of Muller, 1776; -f- Lampusia f3 Schumacher, 

 1817; Triton Lamarck, 1822; -j- Tritonia Bowdich, 1822, not 

 Cuvier, 1817; -f- Charonia and Nyctilochus Gistel, 1848; -f- Lam- 

 pusia Morch, 1852, Newton, Cossmann, etc.; -j- Tritonellium 

 Morch, 1877, not Valenciennes, 1858; -(- Trompcta Morch, 1877; 

 -f- Buccinatorium Morch, 1877; -\- Charonis Morch, 1877, in syn. ; 

 + Lotorium (pars) Kesteven, 1902. 



