222 RETUSA. 



R. CECILLII Philippi. PI. 23, fig. 53. 



Shell ovate-oblong, subcylindrical, very thin, whitish, the spire 

 depressed-conic ; sutures impressed and plicate ; aperture linear, 

 at base dilated. Alt. 5'5, diam. 2'66 lines. Whorls 4-4*. (Phil.) 



Japan (Dkr.); China (Largilliert). 



Bulla cecillii PH., Zeitschr. f. Mai. 1844, p. 164. DKR., Ind. Moll. 

 Mar. Jap. p. 164, (as Utriculus). 



Shell almost exactly cylindrical, thin, smooth, shining; with 

 arcuate growth-striae, but little conspicuous, but somewhat plicated 

 at the suture. Spire much depressed, obtuse or somewhat acute. 

 Aperture linear, dilated below. This species corresponds to 

 B. jeverensis Schroeter of the German Sea, but is thrice the size J 

 B. valuta Q. & G. is narrower with very deep sutures (Ph.) 



A. Adams gives the locality " Mexico." His description is as 

 follows, the above figure being copied from the Thesaurus. 



Shell ovately cylindrical, thin, smooth, covered with an olivaceous 

 epidermis, longitudinally substriated ; spire distinct, rather elevated, 

 whorls five, suture corrugated ; aperture narrow, anteriorly widely 

 dilated ; columella arched, simple. 



Mexico (Mus. Hanley). 



Bulla (Utriculus) cecillii, A. ADAMS, in Thes. Conch, ii, p. 572 y 

 pi. 120, f. 22. U. cecillii Sown., Conch, on. f. 3. 



Southern and Indo-Pacific species. 



R. SUCCINCTA A. Adams. Unfigured. 



Shell cylindrical, coarctale in the middle, the vertex truncate ; 

 white, longitudinally striate throughout, transversely banded, bands 

 pale and rather distant. Aperture linear, narrowed in the middle, 

 dilated in front, the inner lip obsoletely plicate (Ad.). 



Tsu-Sima, Japan, 16 fms. ; Awa-Sima, at low water (Ad.). 



Tornatina succincta AD., Ann. Mag. N. H. (3), ix, p. 154. 



In form the species most resembles T. truncata J. Adams ; but it 

 is more elongated and much narrower, and marked with indistinct 

 pale bands ; the whorls of the spire are visible but sunken, and the 

 parietal plica is not conspicuous (Ad.). 



R. BORNEENSIS A. Adams. PI. 23, fig. 46. 



Shell ovate-cylindrical, smooth, subpellucid, white, covered with 

 a ferruginous epidermis, longitudinally striated ; spire distinct, flat,, 



