The Non-Marine Molliisca of Portuguese East Africa. 



171 



Pseudof/Jessula [Pseudocerastus) boivini (Morel.), 1860. 

 (Plate VI, figs. 1-4.) 



1860. Glandina boivini Morel., Series Conch, ii, p. 72, pi. 5, fig. 5. D.F. 



1898. Buliminus movenensis Stur., S.A. Moll., p. 66, pi. 2, figs. 

 44-51. D.F. 



Hab. L. Marques. Delagoa Bay (Connolly) ; Moyeno {movenensis, 

 Penther) ; Rikatla ; under stones in the Lebombo Mts. (Junod) ; Andrada 



/. 



Text-fig. 18. — Pseudoglessula (Pseudocerastus) boivini (Morel.). 

 Apical sculpture ; X 32. 



(Vasse) ; Maxixe (Lawrence) ; District N. of Macecjxiece (Cressy) ; Wanetsi 

 R., Magude District (Bell Marley). 



This very widely distributed species yaries little in form ; the transverse 

 striae of its apex are only very little farther apart than those on the later 

 whorls and it is rather widely umbilicate. 



Von Martens (D.-O.-A., p. 62) mentions a Liniicolaria borellii Ancey, 

 of which I can find no other trace in literature. As represented in the 

 Dautzenberg collection, however, it is identical with the present species. 



The following notes on the anatomy of Ps. boivini are based on some 



