290 LIMICOLARIA, EAST AFRICA. 



Aperture bluish within, displaying more or less of the ex- 

 ternal striping, vertical, equalling about two-fifths of the 

 shell's length. Columella suberect, bluish and dark violet, 

 scarcely forming any angulation at the base with the lower 

 margin of the peritreme. Length 36, diam. 17 mm. ; aperture 

 14y 2 long, 8 wide " (Smith). 



Kegion of Lake Tanganyika, especially eastward; Victoria 

 Nyanza, and northward to Lake Rudolf. 



Achatina (Limicolaria) martensiana SM., P. Z. S., 1880, 

 p. 345, pi. 31, f. 1, la; 1893, p. 634 (Sumbu, Itawa, southwest 

 of Tanganyika). L. martensiana Sm., CROSSE, J. de Conch., 

 1881, p. 297. GRANDIDIER, Bull. Soc. Mai. Fr., ii, 1885, p. 

 162. BOURG., Moll, de 1'Afr. equat., p. 104. MARTENS, 

 Beschalte Weichthiere Ost-Af., p. 108, pi. 1, f. 10. PELSE- 

 NEER, Bull. Mus. Roy. d'Hist. Nat. de Belgique, iv, 1886, p. 

 104 (epiphragm). STURANY in Baumann, Durch Massai- 

 Land zur Nilquelle, p. 15. SOWERBY, Shells of Tanganyika, 

 f. 18. L. giraudi BGT., Moll, de 1'Afr. equat., p. 104, pi. 6, 

 f. 7, 8. 



An abundant form in the Tanganyika region. Figures 33, 

 34 are copies of Smith's, 33 being the type figure, fig. 34 

 referable to var. multifida. Fig. 43 is the type figure of L. 

 giraudi Bgt., which seems to be a synonym, representing a 

 younger shell. Figures 36-40 represent specimens of a series 

 taken by Dr. A. Donaldson Smith at Lake Rudolf. They 

 are somewhat more slender than Smith's types, with shorter 

 aperture, but agree well in other respects; one measures 

 36 x 15 mm., apert. 13 mm. long. 



61a. Var. PALLIDISTRIGA Martens. PI. 34, fig. 46. 



Agreeing with typical martensiana in sculpture, general 

 shape, etc., but the streaks are pale brownish, even in speci- 

 mens apparently collected alive. From a grass steppe south 

 of Albert Edward Nyanza, at Mutambuka (Stuhlmann), and 

 from the shore of the Victoria Nyanza (G. A. Fischer). 



L. m. pallidistriga MARTS., Beschalte Weich., etc., p. 109, 

 pi. 5, f. 1. 



