The Non-Marine Mollusca of Portuguese East Africa. 131 



other locality except Zanzibar. Bourgiiignat mentions the striae as being 

 spotted with white about the suture, which rather suggests a worn shell ; 

 Cressy's examples do not present this feature, but agree so closely in all other 

 respects with the original figure and description that there can be no doubt 

 as to the accuracy of their determination. The shell is remarkable for its 

 flattened spire, with convex sides, and is easily recognisable. 



Ledoulxia jenynsi (Pfr.), 1845. 



1845. Helix jenynsi Pfr., P.Z.S., p. 131. D. 



Hab. Mozambique. Querimba I. (Peters). 



L. Marques. Tette (Peters). Zangwe Basin (Cressy). 



The well-known white-shelled species with brown band at the periphery ; 

 its rediscovery in the Zangwe Basin tends to confirm the accuracy of von 

 Martens' doubtful record of Tette. 



Ledoulxia mozamhicensis (Pfr.), 1855. 

 (Plate VIII, figs. 1-4.) 



1855. Helix mozamhicensis Pfr., P.Z.S., p. 91, pi. 31, fig. 9. D.F. 



Hah. Mozambique (Stuhlmann ; Gibbons ; Frey). 



L. Marques. Tette (type, Peters) ; Movene (Penther) ; Wanetsi E., 

 Magude District (Bell Marley) ; Antioko ; under stones in the Lebombo 

 Mountains (Junod) ; Zangwe Basin ; Mtisherra E. Valley (Cressy). 



In view of some confusion over this species, for which Bourguignat is 

 mainly responsible, it is necessary to recognise the fact that it was founded 

 on only two shells, which are available for reference in the British Museum. 

 One of these is very young, and the other, Pfeifier's type, is considerably 

 weathered and by no means full grown, measuring 12x 10| mm. in diameter 

 and 6| mm. in height. 



It is not, however, one of a race of small shells, as Bourguignat has 

 written, but merely an immature example of the larger race which appears 

 to have been rightly accepted by Smith, von Martens, Pilsbry, and Germain, 

 to mention only four leading authorities of different nations, as representing 

 Pfeiffer's species. The series from Lebombo Mountains, of which the 

 anatomy is described below, appear to agree with the type in every respect, 

 except that the aperture is comparatively a little more laterally compressed 

 and slightly greater in altitude. It is therefore the more remarkable that 

 Semper's account of the anatomy of specimens from the type locality 

 shows some important points of difference from that of Watson, who 

 reports as follows : — 



Semper * and Godwin-Austen f have already partly described the 



* Reis. Arch. Philipp., vol. ii. (3), 1870, p. 42, pi. iii, fig. 5, pi. vi, fig. 15. 

 t Proc. Malac. Soc, vol. i, 1895, pp. 281, 282, pi. xix, figs. 1-le. 



