CANARY ISLAND FERUSSACLE. 235 



Canary Is.: Yandia, Fuerteventura (Fritsch). 



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

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

 25. Ferussacia v. y 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 

 strratulate, 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. Peristome 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. : L-anzarote ( 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 /., WOLLASTON, Test. Atlant. p. 459. 

 Ferussacia /., 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 6-61/2, 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- 



