398 RINGICULA. 



suture, the last whorl four-fifths the length of the shell, rounded at 

 base; spire very short; aperture narrow, margins joined by a thick 

 callus ; right margin forming a canal above ; columellar margin 

 arcuate, with four folds, the upper two folds thick, short, obliquely 

 directed downward, lower two folds transverse ; lip arcuate, thick 

 within especially at base, narrower above, varicose outside and cover- 

 ing three-fourths of the penultimate whorl. Alt. 5'2, diam. 4'5 



mill. (Mori.). 



Of Cape Breton (Folin). 



R. salleana MORL., J. de C., 1880, p. 153. 



Characterized by the very globular, short form, the four folds of 

 the columellar margin, thickness of the columellar callus bordered 

 by a distinct groove. 



R. PASSIERI Morlet. PI. 46, figs. 39, 40. 



Shell subventricose, thick, subelongate, regularly striated, the 

 striae impressed, transverse, distant; whorls 7 to 7J, convex, separ- 

 ated by a linear, margined suture; last whorl two-thirds the total 

 length, rounded at base; spire elongated ; aperture narrow above, 

 dilated below, margins joined by a callus; columellar margin arcu- 

 ate triplicate; upper fold vertical, lower sinuous; lip thick, prom- 

 inent outside, a little sinuous within, rounded below ; above partly 

 covering the penultimate whorl and forming a canal. Alt. 5$, diam. 

 3i mill. (Mori.). 



Of Cape Breton (Folin). 



R. pameri MORL., J. de C., 1880, p. 157, pi. 5, f. 5. FOLIN, Les 

 Fonds de la Mer. iii, p. 334. 



R. PULCHELLA (Jeffreys) Morlet. PI. 46, figs. 35, 36. 



Shell small, thin, more or less elongate ; whorls 5, convex, separ- 

 ated by a deep suture, rather smooth, delicately sulcate above ; last 

 whorl two-thirds the total length, ornamented with two spiral lines 

 above near the suture, then smooth, transversely punctate-lirate in 

 the middle and below, the base rounded ; aperture ample, margins 

 joined by a thin callus ; columellar margin slightly arcuate, three- 

 folded, the folds minute; lip regularly arcuate, thin, slightly prom- 

 inent outside. Alt. 3'2, diam. 2 mill. (Mori.). 



West of Ireland, in 1180-1215 fms. ; between Falmonth and Gib- 

 rnlfnr, 227-795 fms. (Porcupine). 



R. pulchella Jeffr., MORL., J. de C., 1880, p. 158, pi. 5, f. 6. 



