BOETTGER AND HAAS : ON AFRICAN NON-MARINE SHELLS. 



359 



This species somewliat resembles the shell described by Preston 

 (Proc. Malac. Soc. London, vol. vii, pp. 89-90, 1907) as Limicolaria 

 Smithi,^ from Uganda, but is distinguislied bj^ its flatter whorls, 

 by more distinct markings, and by the impressed line, which borders 

 the fine plication beneath the suture. It also somewhat resembles 

 Z. Martetisiaiia, E. A. Smith, but is distinguished from it by its rich 



dark blackish-brown markings, which are more intense. The angle 

 which the margin of the columella forms with the basal margin is 

 better marked in Z. Leroii than in Z. Martens i ana. We have 

 pleasure in connecting with this handsome species the name of its 

 collector, Dr. Otto le Roi. Unfortunately only one specimen is at 

 hand, which was found at the Bahr el Gliazal (February 23, 1910). 



Limicolaria Hepglini, v. Mart. 



This species was based by von Martens on two shells, collected by 

 J. Heuglin in Southern Abyssinia (Malak. Blatt., 1866, pp. 94-5). 

 Since that time specimens of this shell have been brought to Europe 

 rather fi'equently, and a number of sub-species in ISTorth-East Africa 

 have been distinguished. Four specimens were taken by Dr. le lloi, 

 one at the Bahr el Ghazal (February 27, 1910), one northward of Bor, 



Limicolaria Sviithi, Preston, named in honour of E. A. Smith, is pre- 

 occupied by L. Smithi, Pils., named after A. Donaldson Smith, which is 

 a sub-species of L. flammata, Caill. (Man. Conch., ser. II, vol. xvi, 

 p. 283, Philadelphia, 1904). Therefore, we propose the name Limicolaria 

 Prestoni, nom. nov. 



