South. African Land-Moll usca. 461 



curved, approaching the aculeate fornix but are all bicuspid ; 

 the outer cusp small and very much below the point, the 

 cusp becoming notch-like and almost disappearing in the 

 smaller teeth next the margin itself. Fornmla : — 



?58 . 2 . U . 1 . 14 . 2 . 58?, or +64 . 1 . 64 + . 



Unfortunately in extracting the radula the laterals were 

 broken away from the centre position, and thus their exact 

 number conid not be counted ; but it does not very much 

 exceed fifty-eight. 



Three specimens have since been recorded by Mr. Burnup 

 taken in the same locaHty : one is darker — that is, on the 

 visceral sac there is I'ather more black marking and no white 

 specks towards the apex; the two others have less black 

 mottling and fine spotting. 



With the second lot of this species Mr. Burnup, writing 

 to Mr. .lohn Ponsonljy, says: — "As this is one of our 

 darkest Helicarions, I don't think it likely to be corneus, 

 Pfr,, which is described as pale horn-colour. Anyone 

 describing the shell would be bound to observe the difference 

 in shade above and below the peripheral band. The same 

 feature is observable less conspieuouslv in the Tongaat form 

 ( = G.A. 24}." 



Kerkojjhorus bicolorj sp. n. 



Locality. Townbush, Maritzburg (No. 3418, Brirmiji). 



Animal. — The further specimens received have a tinge of 

 pale sap-green. The lobe over the mucous gland is very long 

 and pointed, similar to Kerkophonis phadirnus. The right 

 shell-lobe is moderately narrow, long and attenuate, and thus 

 ditfers from K. phcedimits and also from tonffoatensis ; the 

 left shell-lobe elongately triangular, rather broad at base, as 

 in No. 15, K. burnnpi, and 3379. In the visceral sac the 

 apical whorls are brown, the branchial wall S[)arsely spotted 

 or sjjlashed with l)lack ; a conspicuous black band above the 

 region of tiie heart, a very few distant white specks on the 

 succeeding portion up to the apex. 



Generative organs as in No. 12; the free oviduct pink, 

 very conspicuous. 



Jaw with no central projection. 



Kadula tbrmula: — 



+ 26 .2.11.1.14.2. 26 + , or +42 . 1 . 42 + . 



Teeth of usual form, the marginals bicuspid, the inner cusp 

 the longest, outermost becoming very minute. 



