EU5OK i LA. 395 



1ST < i KMI r, lip denticulate i l!iii(fii li/n 8. ir.\ c 



L'i> < ii;rr, lip not dent imlatr. 

 O. Columcllar margin w'ith two folds ( /,' '' -.), R. 



leptoc/it ///, nlfiil'i, jn-fiirufii, y///x/7A/. 



6. Columella with three (olds, nil species not named above and 

 below. 



c. Coluniella with four fold.-. /,'. conform is, .^ilh:>nt>i. 

 The larger part of the modern representatives of this ^enus l)e- 

 longto the section with non-crenulated lip and .'{-plicate eohnnella ; 

 they form a group of very closely allied species, many of which can 

 be identified only with great difficulty, unless authentically nam. d 

 specimens are at hand for comparison. The irroup has been 

 monographically studied by Commandant L. Morlet; and from his 

 work a large part of the following account has been taken. 



Mediterranean, North At/untie <n t <l HV.sJ Indian Species. 



R. BUCCINEA Brocchi. PI. 46, fig. 51. 



Shell minute, subovate, inflated, smooth ; spire short, acute ; col- 

 umella triplicate, the folds acute, lip expanded, adnate ; outer lip 

 margined, inflated in the middle, not grooved. (Hrocchi). 



Alt. 4-8, diam. 4 mill. 



West coast of France and Spain; Mediterranean. 



Voluta buccinea BROCCHI, Conch. Foss. Suhap. ii, p. 645, pi. 4, f. 

 9, 1814. Auricula buccinea Sown., Min. Conch, v, p. 100. pi. 

 f. 2. R. buccinea DESH., An. s. Vert. viii,p. 344. MOKM.T, Journ. 

 de Conch. 1878, p. 132, pi. 5, f. 16 ; p. 278, pi. 8, f. 6 (fossil). 



(,)uite closely allied to R. anrirnhitu, but more globose, with 

 shorter spire, heavier callus, the surface always smooth and >hi: 

 (Mori.). 



It occurs also in the middle and upper Miocene and lower Plio- 

 cene. 



R. AURICULATA Mcnard. PI. 4*5, Bgl 



Shell minute, ovate, inflated, white, smooth ; spire short, ac 

 base emarginate; columella triplicate, the folds acute: lip 

 panded adnate ; lip margined, callous. Alt. ")!, diam. 4 mill. 

 (Men.}. 



Ocean coast of Si >< tin ; M 



