LIMICOLARIA, EAST AFRICA. 291 



61&. Var. MULTIFIDA Martens. PL 34, figs. 34, 35. 



On the penult, and last whorls the broad dark stripes 

 break up at the same height into 5 or 6 narrower and lighter 

 ones, partly dislocated. Length 37.5-41.5, diam. 16.5-17, 

 apert. 17 x 10 mm. This form comes from south of Manyora 

 Lake (Neumann), around Victoria Nyanza and Tanganyika 

 lakes, etc. 



L. m. var. multifida MARTENS, Nbl. d. mal. Ges., 1895, p. 

 182 ; Beschalte Weichthiere, p. 109, pi. 1, f . 13. 



Smith's fig. la of L. martensiana (copied in my fig. 34) 

 is referable to this form. Similarly marked individuals 

 occur in the Lake Rudolf series before me, so the variety is 

 hardly racial, merely a color-phase. 



61c. Var. ELONGATA Martens. PL 34, figs. 47, 48. 



Long- fusiform, glossy, lightly striatulate, yellowish- white, 

 with rather wide chestnut streaks, sometimes split and nar- 

 rower above. Whorls Sy 2 , a little convex, regularly increas- 

 ing, the last narrow; suture marginate, lightly crenulate, 

 white. Aperture nearly vertical, long-ovate ; peristome iin- 

 expanded, brown-edged within, the columellar margin dis- 

 tinctly twisted, pale livid fleshy. Length 49, diam. 16, length 

 of apert. 18, width 9.5 mm. (Marts.). 



Nyangwe, on the Lualaba or upper Congo (Wissmann). 



L. m. var. elongata MARTS., Sitzungsber. Ges. naturforsch. 

 Freunde, 1883, p. 72 ; Conch. MittheiL, p. 189, pi. 34, f . 1, 2. 



A similar, but shorter form in the collection of the Acad- 

 emy occurs at Kala, on Lake Tanganyika (pi. 34, figs. 41, 42). 



61d. Var. EXIMIA Martens. PL 34, figs. 44, 45. 



Ovate-elongate, strongly striate, finely decussate on the 

 upper whorls; pale straw-yellow with wide dark brown 

 stripes, generally angular and frequently very oblique; in 

 the upper third of the whorls they are numerous, paler and 

 narrow. Spire rather full and wide, of 8y 2 regularly widen- 

 ing whorls, only weakly convex, the last more convex, grad- 

 ually tapering downwards. Columellar margin very little 

 arcuate, outwardly violet, inwardly bluish-white. Length 59, 

 diam. 25, apert. 25x16 mm. (Marts.). 



