270 FERUSSACIA, MADEIRA. 



wall smooth or with a supraparietal fold; columella strongly 

 plicate basally. Type F. tornatellina. 



63. F. MELAMPOIDES (Lowe). PI. 38, figs. 1, 2. 



The shell is fusiform-ovate, pale brownish-yellow with a white 

 subsutural band followed by a gray line; glossy, weakly striatu- 

 late. The spire has nearly straight outlines, the apex obtuse. 

 Whorls 5, nearly flat, the penult, and last slightly convex. 

 The linear suture descends obliquely in its last half turn, and 

 is shortly deflexed at the aperture. The aperture is subvertical, 

 ovate-lanceolate. .The outer lip bends forward in a broad curve 

 below, has a blunt edge, and a large white callus within. The 

 parietal callus is rather thick, transparent, and bears a low, in- 

 distinct, vertical supraparietal callus. Columella white, con- 

 cave above and below a rather strong, simple projecting fold. 

 Length 11.7, diam. 5, length of aperture 7.7 mm. 



Madeiran Archipelago: Ilheo de Cima, off the southeastern 

 extremity of Porto Santo, common under large stones. Also 

 found fossil on Porto Santo. 



Helix melampoides LOWE, Trans. Camb. Phil. Soc., iv, p. 60, 

 pi. 6, f. 24 (1831). Achatina melampoides Lowe, PFR., Monogr. , 

 iii, 510; Conchyl. Cab., p. 317, pi. 25, f. 31, 32.Oleacina 

 melanopsoides H. & A. ADAMS, Gen. Rec. Moll., ii, p. 47. 

 Lovea melampoides WATSON, P. Z. S., 1875, p. 679 (description 

 of animal). WOLLASTON, Test. Atlant., p. 257. Achatina 

 tornatellina var. maxima PAIVA, Mar. Moll. Mader, 1867, p. 112. 



Closely related to F. tornatellina, but larger, with less strongly 

 twisted columella, less oblique lip, seen in profile view, and 

 less developed callosities on the parietal wall. It is a very 

 local species, found living only on one tiny islet, though a few 

 fossil specimens have been taken at Porto Santo. 



64. F. TORNATELLINA (Lowe). PI. 38, figs. 3, 4, 5, 6. 



The shell is fusiform -ovate, pale yellowish-brown, with a 

 white subsutural border, glossy, weakly marked with growth- 

 lines. Spire with nearly straight outlines. Whorls over 6, 

 narrow and slowly increasing, the last suture hardly oblique to 

 the preceding. Aperture lanceolate, forwardly oblique, the 

 outer lip sloping obliquely forward towards the base (fig. 6); 



