122 Transactions of the Royal Society of South Africa. 



I have recently * shown that G. distincla, originally recorded from 

 Middelburg, Transvaal, is identical with eximia, originally recorded from 

 the locality mentioned overleaf, the vagueness of which makes it, of 

 course, doubtful whether the species really extends its range into 

 Portuguese territory ; it has recently been rediscovered at Barberton. 



Family RHYTIDIDAE. 



Genus Natalina Pilsbry, 1893. 



Natalina wesseliana (Maltzan), 1876. 



1876. Helix caffra Fer., var. wesseliana Maltz., Kob., Jahrb. D. Mai. 

 Ges., iii, p. 149, pi. 5, fig. 1. D.F. 



Hab. L. Marques. Rikatla (Junod). 



This species, of which the locality w^as then unknown, was first differen- 

 tiated as a variety of caffra in the words : " differt a typo testa obtecte 

 perforata, fere exumbilicata, anfr. ult. valde depress©. Alt. 56, lat. 

 48 mm." 



In 1903, when illustrating a similar specimen, also from an unknown 

 locality, von Mollendorff wrote that if its finding-place, and its distribution 

 relative to N. caffra, were sufficiently known, it would probably be con- 

 stituted a distinct species instead of a mere variety. 



N. ivesseliana is now proved to occur as a constant form in the vicinity 

 of Delagoa Bay, while there are no authentic records of caffra from near that 

 locality. The shells dift'er so greatly in form that von Mollendorff 's inference 

 seems fully justified. 



Natalina caffrula Melv. and Pons., 1898. 



1898. Natalina caffrula M. and P., A.M.N.H. i, p. 24, pi. 8, fig. 1. D.F. 



Hab. L. Marques. Matolla (Penther). 



I have been unable to verify the accuracy of this determination. 



Natalina Jcraussi (Pfeiffer), 1846. 



1848. Helix kraussi Pfr., Krs., Siidafr. Moll., p. 77, pi. 4, fig. 24. D.F. 

 1851. „ sturmiana Pfr., P.Z.S., p. 253. D. 



1878. Macrocystis sturmiana Pfr., Nomenclator, p. 62. L. 



1879. Ampelita „ „ „ p. 184. L. 

 Hab. L. Marques. Delagoa Bay {sturmiana, fide Pfeiffer). 



The type of sturmiana, from the Cuming collection, is in the British 

 Museum. It is from an unknown locality, but in the Nomenclator, where 

 this species is placed in two different genera, it is assigned the locality 

 * Proc. Mai. Soc. xv, 1922, p. 71. 



