50 ACHATINA, EAST AFRICA. 



45. A. IMMACULATA Lamarck. PI. 11, fig. 35. 



Shell very large, ovate-oblong, ventricose, longitudinally 

 sulcate-rugose ; fulvous, the apex whitish. Aperture longer 

 than the spire, columella rose-tinted; lip white within, its 

 inner margin brown. Habitat, .... my cabinet. A large 

 and beautiful shell, which seems different from the Bulimus 

 fulvus of Bruguiere. It is nearly 6 inches long (Lam.). 



Southeast Africa: Cape Delagoa (Layard) ; Natal 

 (Krauss) ; between Lydenberg, Transvaal, and Delagoa Bay 

 (Dr. Wilms) ; Inhambane, on the ground (Gibbons) ; Nyasa- 

 land (Smith). 



A. immaculata LAM., An. s. Vert., vi, pt. 2, p. 128, no. 3 

 (1822). DESH., Encycl. Meth., ii, p. 9; in Fer., Hist., p. 

 158, pi. 127. PFE., Monogr., i, p. 251; iii, p. 432; iv, 600; 

 vi, 211. KRAUSS, Die Siidaf. Moll., p. 81. GIBBONS, Journ. 

 of Conch., ii, p. 143. SMITH, Ann. and Mag. N. H., 1890, 

 vi, p. 393; Proc. Zool. Soc. Lond., 1899, 589; Proc. Malac. 

 Soc. Lond., iii, p. 309, figs, i, n (epiphragm). STURANY, 

 Catalog., p. 55. MARTENS, Sitzungsber. Ges. nat. Freunde, 

 1900, p. 119. 



Lamarck's description is given above, and Ferussac's fig- 

 ure, copied on pi. 11, fig. 35, is from the size, etc., apparently 

 from Lamarck's type. The specimens before me (pi. 43, figs. 

 1, 2) are all smaller, with the columella more concave and 

 the aperture notably shorter. They are rather smooth, the 

 spirals being mostly obsolete on the last whorl except just 

 below the suture, where the concave surface is scored by one. 

 or several spiral furrows. The general surface is smoother 

 than Lamarck's description seems to indicate. The color is 

 rich chestnut, with numerous pale or whitish streaks, the lip 

 having a rather wide brown and pink internal border, colu- 

 mella and parietal wall rose-color. Other specimens (fig. 2) 

 are striped brown and whitish, lip-border almost absent, the 

 columella and callous flesh-tinted. 



These specimens show but slight traces of the spotting, 

 which is indicated minutely on the back of Ferussac's figure, 

 and culminates in var. layardi Pfr. 



Length 115, diam. 62, aperture 65 mm. 



