160 Transactions of the Royal Society of South Africa. 



Rhachis pimctata (Anton), 1839. 

 (Plate IV, fig. 22.) 

 1839 Bulimus punctatus Ant., Verz. Conch. Samml., p. 42. D. 

 1845 „ ferussaci Dkr., Zeitschr. f. Malak., ii, p. 164. D. 

 1853 ,, ,, ,, Novit. Conch., Suppl. ii, p. 6, pi. 1, figs. 



35-36. D.F. 



1854, 55 Bulimus punctatus Ant., Pfr., Conch. Cab., p. 229, pi. 62, figs. 

 22-24. D.F. 



Hab. Mozambique (Gibbons ; Frey) ; Querimba I. (Peters). 



L. Marques. Tette (Peters). 



The locality Lebombo Mts. (Barber) given in my reference list probably 

 relates to the next species. As mentioned overleaf, I illustrate the putative 

 type oi ferussaci, Dkr., which is an excellent example of mature punctata. 



Rhachis jejuna (M. and P.), 1893. 

 (Plate IV, fig. 21.) 



1893. Buliminus (Pachnodus) jejunus M. and P., A.M.N.H. xii, p. 106, 

 pi. 3, fig. 7. D.F. 



Hab. L. Marques. Lebombo Mts., under bark of dead tree (Junod) ; 

 Wanetsi R., Magude District (Bell Marley). 



This species, described from the Northern Transvaal, was based on 

 very immature examples, whose close resemblance to similar specimens of 

 punctata caused me to unite the two species in my Reference List. Now 

 that adult shells are to hand it may be advisable to regard them as distinct. 

 The spire of jejuna has slightly convex sides, the aperture is comparatively 

 longer, thus appearing narrower, and the microscopic spiral sculpture is, 

 on the average, stronger than in punctata, though the last-mentioned 

 feature is very variable in the latter species. 



Rhachis petersi (Pfeiffer), 1855. 



1855. Bulimus ])etersi Pfr., P.Z.S., p. 97. D. 

 Hab. L. Marques. Tette (Peters). 



Text-fig. 17, E is a photograph of the type of this hitherto unfigured 

 species. 



*!«-«*• 

 ^ 



Text-fig. 17, E. — Rhachis 2)elersi (Pfr.), type, X 1. 



