302 BURTOA. 



nearly vertical. Length 97, diam. 61.5, length of aperture 

 56 mm. 



Bukoba, on the western bank of the Victoria Nyanza; 

 Ipala in Ugogo, abundant. 



Limicolaria nilotica var. emini MARTS., Sitz-Ber. d. Ges. 

 nat. Freunde, 1891, p. 14 ; Beschalte Weichthiere, p. 94, 96. 

 1 L. nilotica DOHRN, P. Z. S., 1864, p. 116. Burtoa nilotica 

 E. A. SMITH, Proc. Malac. Soc. Lond., i, p. 323. 



This form stands very close to reymondi Bgt., but it tapers 

 less above. 



Var. CRASSA Martens. PI. 29, fig. 8. 



Thick-shelled, globose-ovate, the spire wide and blunt; 

 aperture about three-fifths the total length, thick-margined; 

 outer lip obliquely sloping outward above, strongly arcuate 

 below; columellar margin nearly vertical. Length 86, diam. 

 60, aperture 52 mm. Length 102, diam. 67, apert. 58 mm. 

 long, 42 w T ide, including the columellar margin. 



Kawirondo, northeastern coast of the Victoria Nyanza 

 (Neumann) ; Massai steppe, northeast of Ussandane (Lang- 

 held). 



L. n. var. crassa MARTS., Nachrbl. d. mal. Ges., 1895, p. 

 181; Beschalte Weichthiere, p. 97, fig. 



Var. OBLONGA Martens. PL 26, fig. 15. 



Thick-shelled, produced above, evenly tapering, the mouth 

 very little over half the total length, thick-margined. Outer 

 lip about equally arcuate above and below ; columellar margin 

 comparatively short, only a little oblique or almost vertical. 

 Length 96-102, diam. 56-60, aperture 50-53 mm. 



Southern shore of the Victoria Nyanza, between Bukense 

 and Ngome (Stuhlmann) ; Kome Island (Neumann). 



L. n. var. oblonga MARTS., Nachrbl. d. mal. Ges., 1895, p. 

 181; Beschalte Weichthiere, pp. 96, 97. ? Achatina (Limi- 

 colaria) nilotica E. A. SMITH, P. Z. S., 1880, p. 345 (Ujiji). 



Var. GIRAUDI (Bourguignat). PI. 35, fig. 22. 



The description of this species is not accessible to me. The 

 figure indicates a species of the nilotica type. 



