396 



RINGICULA. 



Marginella auriculata MENARD, Ann. du Mus. xvii, p. 331, 1811. 

 PHIL., Enum. Moll. Sicil. i, p. 231. Ringicula auriculata PHIL., 

 loc. cit. ii, p. 198, pi. 28, f. 13. MORLET, Journ. de Conch. 1878, p. 

 130, pi. 5, f. 14. WATSON, torn, cit., p. 312, pi. 10, f. 4 (living 

 animal). JEFFREYS, Ann. Mag. N. H. (4), vii, p. 245. SEGUENZA, 

 Atti Accad. dei Lincei, Mem. ix, p. 344, figs. 



Very closely allied to R. buccinea, but distinguished by the less 

 globose form, longer spire, weaker callous and revolving striae. 



E. CONFORMIS Monterosato. PI. 46, figs. 33, 34. 



Differs from aurieulata in the form and arrangement of the teeth ; 

 the aperture is more ringent, and the surface is not spirally striate. 

 In some localities this species presents an appearance of vertical 

 folds on the earlier whorls. (Monts.). 



Alt. 4, diam. 3'4 mill. 



Mediterranean, deep water (Monts.) ; Cape Breton (Folin). 



R. auriculata var. conformis MONTS., Nuova Revista Conch. Medit. 

 p. 45, 1875. R. conformis MONTS., Journ. de Conchyl. 1877, p. 44, 

 pi. 11, f. 4. MORLET, /. c. 1878, p. 131, pi. 5, f. 15. SEGUENZA, 

 Atti della R. Accad. dei Lincei, Memorie, ix, p. 344-390, figs. 



R. TERQUEMI Morlet. PI. 46, figs. 41, 42. 



Shell small, globose, thin, regularly striate, the striae conspicuous 

 on the apertural face of the last whorl, sometimes obsolete on its 

 back, 3 to 8, three of which are basal ; whorls 4, globose, separated 

 by a channelled suture ; last whorl over half the length of the shell, 

 rounded at base ; spire short, rapidly increasing ; aperture wide, the 

 margins joined by a thin callus, columellar margin arcuate below, 

 triplicate, the folds thick, short ; upper fold like a twisted callous, 

 lower fold larger than the middle one; lip regularly arcuate, 

 slightly calloused and subdentate in the middle, a little prominent 

 outside. Alt. 3, diam. 1 mill. (Morl.\ 



Bay of Smyrna, in 20 meters (Terquem). 



R. terquemi MORL., J. de C., 1880, p. 159, pi. 5, f. 7. 



R. SCHLUMBERGERI Morlet. PI. 46, figs. 53, 54. 



Shell short, globulose, thick ; whorls 5, convex, separated by an 

 impressed suture, ornamented with deep, regularly distant spiral 

 strife, conspicuous on the latter three-fourths of the last whorl ; 



