164 Annals of the South African Museum. 



(i) Pachnodus, Albers, 1860 (Die Helic. p. 230, Type, in error, 

 velutina, Pfr. ; emend., Bgt., 1889, Moll, de 1'Afr. equat. p. 64, Type 

 spadicea, Mke.). 



Bourguignat's rejection of velutina as type of Pachnodus seems 

 perfectly sound. If spadicea is not acceptable, a new name is 

 necessary for the group, which comprises 



arenicola, Bs. ; carinifera, M. & P. ; drakensbergensis, Smith ; 

 mcbeaniana, Bnp. ; natalensis, Krs. and spadicea, Mke. 

 ( = vitellina, Pfr.). 



(ii) Conulinus, von Martens, 1895 (Nachr. d. Deutsch. Mai. Ges. 

 p. 180, Type, conulus, Eve.). 



conulus, Eve. ; metuloides, Smith ; transvaalensis, M. & P., 

 and probably burnupi, dimera, and maritzburgensis, M. & P., 

 and meridionalis, Pfr. 



(iii) Xerocerastus, Kob. & Mlldff., 1902 (Conch. Cab. p. 1021, 

 Type, damarensis, Ad.). 



( = Eburnea, Mousson, 1887 (J. de C. p. 295), nee Eburna, Lam., 

 1801, nee Eburnea, Flem., 1828). 



burchelli, Gray ; damarensis, Ad. ; hottentota, Gray ( =pygmcea, 

 Ad.) ; layardi, M. & P. ; opposita, Mouss. ; psammophila, 

 schultzei, and subteres, Bttg., and zuluensis, M. & P. 

 (iv) Ehachisellns, Bourguignat, 1889 (Moll, de 1'Afr. equat. p. 68, 

 as Eachisellus. Type punctata, Anton.) 



Thiele (Deutsch. Zent.-afr.-Bxp., 1911, p. 201) shows th&t punctata 

 is not acceptable as type of Bhachis, Albers, but is rightly placed in 

 Bhachisellus. Although possibly not belonging to the same Sub- 

 genus, the following shells fall, roughly, into the same group : 

 dubiosa, Stur. ; melanacme, mozambicensis, and petersi, Pfr. ; 

 punctata, Ant. ( = jejuna, M. & P.) ; spilogramma and sticta, 

 von Mts. 



Thiele (I.e.) has, on account of radular peculiarities, proposed to 

 include melanacme and mozambicensis in a new Sub-genus Rhachi- 

 dina, the type of which is the West African tumefacta (Eve.), 

 (v) Ena pentheri (Stur.). 

 (vi) Group of E. boiukeri (Sow.). 



bowkeri, Sow., and nuptialis, M. & P. 

 (vii) Ena boivini (Morel.) ( = movenensis, Stur.). 

 In the following pages the species are arranged in alphabetical 

 order. 



NOTE. Eulimoides, Gray, and namibicus, Bttg., were described 

 as EnidcB, but apparently belong to Zootecus, Westerl., a Genus of 

 StenogyrincB. 



