250 MKS. JANE LONGSTAFF ON NON-MARINE 



Genus BuETOA, Bourguignat. 



BURTOA NILOTICA, Pfr. 



Sulimus niloticus, PfeifFer, 1861, Proc. Zool. Soc, London, p. 24. 



Limicolai'ia nilotica, Pfeiffer, 1876, 'Nov. Conch.' vol. iv. no. 676, pi. 110. figs. 1, 2 

 3, p. 5. 



This species was only met with on the Bahr el-Gebel. Thirteen specimens 

 were taken : near Lake Shambe (one), at Malek (six), Sheik Tombe (three), 

 Kiro (one), and at Lado (two). All were dead^ and only two from Malek 

 have the epidermis preserved ; a bleached shell from this locality has the 

 peristome greatly thickened. 



Burtoa nilotica is a very variable species, and some of the forms have 

 received distinct names. 



Dr. Boettger records two specimens from near Gemesa (Kauisa ?) on the 

 Bahr el-Gebel, and von Martens reports it from the Bahr el-Ghaz;11. It 

 occurs throughout the Lake Region, and has been found as far south as 

 Matabeleland (Conolli/). Mr. Preston informs me he has taken it at Kismayu, 

 while Germain records it from Lake Tchad. 



Family Succineid^. 

 Genus SucciNEA, Draparnaud. 



SucciNEA CLEorATR.1,, Pollavy. 



Sucdnea cleopatrce, Pallary, 1909, ' Cat. Faune Malac. Egypte,' Mem. Inst. Egypt. 



vol. vi. fasc. i. p. 45, pi. 3. figs. 29, 30. 

 Sucdnea cegyptiaca, Ehrenberg, 1830, ' Symb. Phys.' 

 Sucdnea indica, Ji6keli, 1874, 'Fauna N.O.-Afrikas,' p. 167, pi. 6. fig. 11 (non Pfeifter). 



Two specimens were found at Gebel En under a log near the edge of the 

 river, one alive, the other dead. They agree with the figures of M. Pallary 

 and also with that of S. indica, Jickeli, which species M. Pallary considers 

 distinct from S. indica, Pfeiff., therefore he has given it the above name. At 

 the same time he states that it is probably couspecific with S. a:gyptiaca, 

 Ehrenberg, but as this species was described from an immature specimen 

 it is hardly possible to refer other shells to it with certainty. 



It occurs near Alexandria and Damietta. If conspecific with S. wgyptiaca^ 

 Ehrenb., it has previously been taken in the White Nile by Prof. Schwein- 

 furth and recorded under that name by von Martens in Malak. Bliitt. 1873, 

 p. 41. 



