108 Transactions of the Royal Society of South Africa. 



Rhachidina dubiosa (Stur.). 



,, pentheri (Stur.) (a synonym of R. usagarica (Smith)). 



Conulinus meridionalis (Pfr.). 



,, natalensis var. (Krs.). 

 Caecilioides ovam.jpoensis (M. and P.). 



Finally, about 1899, the Eev. H. A. Junod sent home some fine material 

 from the same district and Inhambane, but the paper in which it is recorded 

 presents so many instances of obvious misidentification that the list, as 

 published, is of doubtful value. It contained 17 non-marine species, of 

 which 9 had not been previously chronicled from Portuguese East 

 Africa, viz. : — 



Natalina caffm, var. wesseliana (Maltzan). 



Kerkophorus poeppigi (Mke.). 



Conulinus conuliis (Rve.). 



Metachatina Jcraussi, var. elongata, Junod. 



Achatina schinziana Mousson. 



Limnaea natalensis Krs. 



Planorbis riippelli Dkr. 



Isidora natalensis (Krs.). 



Vivipara capillata Frnfd. 



Of these, although I am rather doubtful as to the correct identification 

 of some of the species which I have not examined, their extension up or 

 down the coast to Delagoa is by no means improbable ; I prove later on, 

 however, that the Kalaharian A. schinziana and Abyssinian P. riippelli are 

 misnomers for A. granulata Pfr. and P. pfeifferi Krs. 



In the first decade of the present century the only recorded collection 

 was made by A. Vasse in the Andrada mining district, the list of which, 

 published by Germain in 1918, added Tropidophora anceps (Mts.), Achatina 

 vassei, and Rhachistia rhodotaenia, var. andradensis Germain to the local 

 fauna. 



In addition to the foregoing, 9 other species have been recorded at various 

 times, by different writers, from Portuguese East Africa, so it will be seen 

 that up to the year 1920 the number of non-marine mollusca known to 

 inhabit the entire territory amounted to only 84 species, of which 55 are 

 terrestrial and 29 aquatic. 



During the last ten years, however, I have been extraordinarily 

 fortunate in opportunities of studying much fresh material from all over 

 Lorenzo Marques. 



Mr. Bernard Cressy has kindly furnished me with a splendid series of 

 shells from the Macequece District, in which the Andrada Mines are situated, 

 and from other more northerly parts of the country ; through the kindness 



