ACHATINA, EAST AFRICA. 45 



There is also a variety from Madagascar (Robillard) which 

 is smaller than the typical form, solid, rather narrow, of a 

 dull livid or purplish shade with narrow, crowded, whitish 

 and darker stria? and some indistinct mottling. Columella 

 and inner edge of lip rose. Outer lip thickened within. 

 Length 115, diam. 55, aperture 59 mm. A similar shell has 

 been figured by Deshayes in Ferussac, pi. 132, f. 1, 2. 



(Forms with white columellar margin.) 

 Var. NEUMANN: Martens. PI. 42, fig. 9. 



; 'A very peculiar specimen, found in company with A. 

 reticulata at Jambiani, on the island of Zanzibar, by 0. Neu- 

 mann, shows in general the characters of A. panthera, but 

 the mouth is pure white and remarkably thickened, the outer 

 margin a little flaring outward, and inwardly having a some- 

 what uneven lip-like thickening, not sharply defined; the 

 columellar margin is strongly arcuate above, then straight 

 and also very thick, as is also the callous upon the parietal 

 wall. Length 126, diam. 62, aperture 64 mm. Evidently a 

 local form, remaining small, and very old' : (Mart.). 



Another form of panthera with white columellar margin 

 and rather small aperture has been described and figured by 

 Pfeiffer, Conchyl. Cab., p. 327, pi. 28, f . 1 ; also Monogr., ii, 

 252. This is a much paler shell than leucostyla. Prof, von 

 Martens reports two specimens with white columellar margin 

 from Zanzibar (Stuhlmann), the largest 125x61 mm., aper- 

 ture 63 mm. Others are recorded from Bagarnoya and near 

 Kilima-Njaro. A number of specimens from "East Africa" 

 are before me. They are smaller and thinner than typical 

 panthera, but have essentially the same color-pattern and 

 very thin cuticle, mainly deciduous. 



Var. LEUCOSTYLA n. var. PL 39, fig. 33; pi. 40, figs. 2, 3. 

 Shell elongate, rather solid, weakly plicattilate. Last whorl 

 dusky-olive colored with some darker and lighter streaks, vio- 

 laceous where worn; preceding whorl or two white, boldly 

 striped with dark brown slripcs, often interrupted; preced- 

 ing whorls yellowish- white or pink, narrowly striped with 



