408 RINGICULA. 



suture ; last whorl very large, three-fourths the length of the shell ; 

 aperture narrow; canal wide, truncated in front; right margin 

 strongly lipped, lip thick, very wide, exceeding the last whorl, 

 strongly one-toothed within ; left margin wide, reflexed, thickened, 

 sulcate, three-toothed within, the teeth prominent and elongated. 

 Alt. 3-8, diam. 2-8 mill. {Folin?, 



Point Pumalaiig ; Hong Kong (Folin); Java (Desh.). 



R. canaliculata Folin, Lea Fonds i, p. 67, j)). (5, f 6. — Moelet 

 Journ. de Conchyl. 1878, p. 120, pi. 5, f. 6. 



The Java example of the Deshayes collection constitutes a variety 

 of smaller size. {Mori.). 



R. PROPiNQUANS Hinds. Unjigured. 



Shell ovate, retuse, striated, shining ; whorls rounded, the last 

 large, well rounded, closely striated. Alt. I5. lines {Hds.) 



Sual, Philippines, 5-7 fms. 



R. propinqiians Hinds, P. Z. S. 1844, p. 96. — Smith, P. Z. S. 

 1871, p. 733. — LiscHKE, Jap. Meeres-Conch. ii, p. 78, 79. — Morl., 

 Journ. de Conch., 1878, p. 122. 



Here the last whorl is not so square in shape, but very full and 

 rounded, and is neatly striated in a very regular manner, and the 

 spire is short. Till the light is properly thrown on them, these strise 

 are not very evident, but once discovered they will be found con- 

 stant (Hinds). 



R. EXSERTA Hinds. JJnfigured. 



Shell ovate, acuminate, smooth, polished whorls rounded, smooth; 

 spire elongate ; lip strongly thickened behind. Alt. If lines 

 (Hinds). 



Camiguing, AQ im^.; Sorsogon, Luzon, 6 fms. Philippities ; Port 

 Jachson, Australia (Brazier). 



R. exserta Hinds, P, Z. S. 1844, p. 97.— Angas, P. Z. S. 1871, p. 

 98.— MoRL., Journ. de Conch., 1878, p. 123. 



Compared with R.gra,)idinosa, the last whorl is small, but agrees 

 in being quite smooth and round ; the spire is elongated as in R. 

 caron, and the labrum is even rather more reflected than is usual 

 (Hinds). 



