228 Annals of the South African Museum. 
It is impossible to regard this species as in any way connected 
with Bulla livida, Lin. (Syst. Nat., Ed. 10. i. p. 729) & Gault. (Index 
Test. pl. 25, f. B), which appears to represent a different Genus. 
varr. CHRULEUS, FASCIATUS, and ovatus, Kiister. 
. 1844 Awricula livida, Desh., varr. cwrulea, ovata, and fasciata, Kist., 
Conch. Cab. p. 45. pl. 6 (1843), f. 22-26. DF. 
Hab. Narva coast (Krauss). 
479. Mreuampus orpinaRius, Melv. & Pons. [S.A.M.] 
1901 Melampus ordinarius, M.& P., A.M.N.H.viii.p.321.pl.2,f.14. DF. 
Type in British Museum. 
Hab. Navan. Mouth of Umlaas River (Burnup). 
480. Mrtampus PARVULUS, Nuttall. [S.A MC] 
1854 Melampus parvulus, Nutt., Pfr., Mal. Blatt. 1. p. 147 (without 
characters). 
1856 x .. , Mon: Aunie(p., 24. 2: 
1857 = 7) ate AUrIGssp., Lo.) -: 
1871 a , von Mts. & Langkavel, Siidsee- 
Conch? poor pl 3; f 10)” 
1898 a Ms Kob., Conch. Cab. p. 220. pl. 26, 
12.5.7 Def. 
Originals in British Museum. 
Hab. Navan, Durban Bay; mouths of Umlaas and Umkomaas 
Rivers (Burnup). 
Owing to the diverse geographical distribution, it is most unlikely 
that these Natal specimens are conspecific with the true parvulus, 
which was described from Oahu; but, in the series examined, I 
have been unable to find valid conchological grounds for their 
separation. Is it possible that the species can have been introduced 
alive in ballast ? 
481. MELAMPUS SEMIARATUS, sp. nov., pl. 2, f.8. [S.A.M.] 
1898 Melampus granifer,“Mouss.,”’ M.& P., Proc. Mal. Soc.ii.p.180. L. 
Shell small, conic-ovate, subrimate, solid, rather glossy, of uniform 
dark brown colour, the upper and lower portions covered with spiral 
grooves which are crossed by faint transverse striw; the middle 
portion is destitute of sulcation, and thus has a comparatively 
smooth appearance, Spire short, conical ; apex acute, 6 flat 
