CANARY ISLAND FERUSSACLE. 235 



Canary Is.: Yandia, Fuerteventura (Fritsch). 



Cionella valida Mouss., Rev. fauna Malac. Canaries, p. 130, 

 pi. 6, f. 24, 25. PPB., Novit. Conch, iv, p. 108, pi. 125, f. 24, 

 25. Ferussacia i>., PFR., Monogr. viii, p. 304. Lovea v., 

 WOLLASTON, Testae. Atlant. p. 459. 



A large, solid species, apparently allied to the smaller 

 F. lanzarotensis. 



18. F. FRITSCHI (Mousson). PI. 40, fig. 38. 



Shell imperforate, ovate-elongate, rather solid, very slightly 

 striatulate, very glossy, pale corneous (somewhat milky). 

 Spire long, convex-conic, the apex minute, obtuse, hyaline; 

 suture flat, narrowly margined. Whorls 6, a little flattened, 

 from the third whorl more rapidly descending, the last two 

 long, last whorl very slightly rounded or flat, somewhat ex- 

 panded in front and below. Aperture subvertical (5 degrees 

 from the axis), three-fifths the total length, oblong-oval, angu- 

 lar above, subangular at the base. Perdstome obtuse, unex- 

 panded outwardly and white, broadly thickened within, the 

 margins joined by a rather thin parietal callus; right margin 

 slightly curved, broadly produced in front; columellar mar- 

 gin shortly and delicately expanded, subtuberculate in front 

 at the basal angle. Columella slightly concave, at the base 

 obliquely and obscurely plicose-truncate. Length 10, diam. 

 3 mm. (Mouss.) 



Canary Is.: Lanzarote (Fritsch, Wollaston) . 



Cionella fritschi Mouss. Rev. fauna Malac. Canaries, 1872, 

 p. 131, pi. 6, f. 30, 31. PFR., Novit. Conch, iv, p. 110, pi. 

 125, f. 30, 31. Lovea f., WOLLASTON, Test. Atlant. p. 459.- 

 Ferussacia f., PFR. Monogr. viii, p. 304. MABILLE, Nouv. 

 Arch, du Mus. viii, p. 152. 



19. F. LANZAROTENSIS (Mousson). PI. 40, fig. 40. 



Shell imperforate, subcylindric, smooth, very glossy, pel- 

 lucid, pale corneous. Spire long, convexly conic, irregular, 

 the apex rather obtuse, nucleus hyaline; suture linear, flat, 

 submarginate. Whorls 6-6V<>, the first 3 regular, a little con- 

 vex, the two following more rapidly descending, long, flat- 

 tened, the last whorl smaller, flat, more convex below, sub- 



