I 

 LIGUUS HEMIBULIMUS. 185 



have been shown by Strebel and Pfeffer to occur also in certain 

 Mexican forms of Oxystyla. 



L. MAGNIFICCS (Pfeiffer). PI. 36o, figs. 30, 31, 32, 33, 34. 



Shell ovate-subfusiform, rather thin, lightly striatulate, hardly shin- 

 ing ; butf, variegated with green and chestnut flames, and one supra- 

 median band, articulated buff and chestnut. Spire conic, the apex 

 very obtuse ; whorls o-|, scarcely convex, the last a little longer than 

 the spire ; suture narrowly margined. Columella straight, vertical, 

 covered with a callus which is white inwardly, blackish outwardly, 

 base red, obliquely truncated at the base of the elliptical aperture, 

 which is blue-white inside. Alt. 47, diam. 21, length of aperture 

 27 mill. (Pfr.) 



Quito, Ecuador (Delattre) ; Southern Colombia, in damp forests 

 (Lehmann). 



Achatina magnified PFR., P. Z. S. 1847, p. 232 ; Monogr. 



Hel. Vivent. ii, p. 255; iii, 487; iv, 602; vi, 217 REEVE, 



Conch. Icon, v, Achatina, pi. 9, f. 33. DUNKER, Jahrb. d. D. 



Malak. Ges. ix, 1882, p. 380 COUSIN, Fauna Malacol. de la. Rep. 



de 1'Equateur (p. 45 of separate copies), in Bull. Soc. Zob'l. France, 

 1887, p. 231. 



This species has been described more in detail by Dr. von Mar- 

 tens, as Lignus excises. There are some differences in coloration, 

 and possibly excisus may be a local race rather than an absolute syn- 

 onym. Fig. 30 represents Pfeiffer's type. 



L. excisus von Martens. (PI. 36, figs. 31-34.) Shell ovate 

 fusiform, imperforate, irregularly striate and malleolate, decussated 

 by some spiral lines (fig. 33) ; brownish-green, painted with some 

 brown and buff streaks. Whorls 6, regularly increasing, the suture 

 appressed, whitish, somewhat crenulated ; apex obluse, with an axial 

 dimple, first whorl minutely granulose, the whole almost black, the 

 following three whorls more reddish, with a blackish, white-spotted, 

 sutural zone. 



Aperture but slightly exceeding half the length of the shell, ample, 

 acutely angular above; outer lip unexpended, obtuse, narrowly 

 scarlet-edg< j d, with a blackish border within ; columellar margin 

 deeply concave, strongly truncated below, as in Achatina, and 

 scarlet colored, passing into the outer lip by a short, narrow basal 

 sinus ; the parietal wall covered with a glossy black-brown deposit. 



