160 WALTER E. COLLINGE. 



(7) I published a check list of the slugs of South Africa, 

 which included twenty-eight species, of which nine Avere 

 common to Natal. 



In the intervening eight years Mr. Henry C. Burnup, of 

 Pietermaritzburg, has lost no chance that has presented itself 

 of adding to this list ; indeed, had it not been for his unre- 

 mitting labour the preparation of the present account of those 

 species of slugs common to Natal would have been impossible. 



It is therefore Avith sincere pleasure that I here place on 

 record the indefatigable and untiring energy and interest he 

 has shown, and the valuable assistance he has at all times 

 given me. 



Apart from Krauss^s (15) well-known Avork, and the list 

 previously mentioned, there is no account of the slugs of 

 Natal. The various references to the writings of different 

 authors on particular species will be found scheduled under 

 each. 



As it stands at the present time the slug fauna of Natal is 

 a most interesting, and at the same time a most curious one. 

 It contains representatives of six great families, and includes 

 fifteen species. Of these four have undoubtedly been intro- 

 duced, and one genus — Apera — has not yet been found to 

 occur outside South Africa.^ 



2. Systematic. 



Fam. LIMACID^ Leach. 

 Sub-fam. Limacin^e W. G. Binn. 



Genus Limax Linn. 



Li max flavus Linn. 



Limax flavus Linne, Syst. Nat., 1758, vol. i (ed. x), p. 652 = L. 



variegatiis Auctt. 



^ Dr. Simrotli (27) lias described a peculiar and possibly allied slug 

 from South Africa (Cape Flats) to wliicli he has given the name 

 Ceratoconcha schultzei. 



