462 Lt.-Colonel H. H. Godwin-Austen on 



Kerkophorus tongaatensis, sp. n. 



Locality. Tongaat {H. C. Burnup), January 1909. 



Shell very narrowly perforate, globosely conoid ; sculpture 

 very fine, but distinct longitudinal striation, finer towards 

 the last whorl : colour rich sienna-brown, decidedly darker 

 above than below, the dividing-line being the sutural band ; 

 spire, apex bluntly conic ; suture impressed ; whorls 4, 

 apical small, the last very ample, a faint narrow sutural 

 band just above tlie periphery ; aperture ovately lunate, 

 decidedly oblique : peristome thin, a slight callus on inner 

 side ; columellar margin just slightly reflected at perforation, 

 nearly vertical, then oblique. 



Size: major diam. llvo, minor 12*5 ; alt. axis 6"25 mm. 



A smaller shell of animal dissected was 12*0 mm. in major 

 diauieter, but agrees in every way with tlie type above 

 described, and was from the same locality. 



Animal. — With a greenish tint, on the extremity of the 

 foot darkish grey, in all the specimens received.. The right 

 shell-lobe is broad and large, as in K. ph/fdimus (pi. xiii. 

 fig. 2); the left shell-lobe, however, is not broad an(l square 

 as in that species, but broad and very elongated ; left dorsal 

 lobe in two parts, the posterior the smallest; lobe above 

 the mucous pore similarly elongate (pi. xiii. fig. 3). 

 Colour brown throughout, dark grey on hiiuler part of foot, 

 a few black specks near the mautlc-edgc, and a black bar 

 above tlic kidney. Shell-loljcs are far smaller than in 

 K. melvilli. The radula formula is 



+ 30 . 2 . 13 . 1 . 13 . 2 . 3G + . 



The marginal teeth not quite complete, similar to that of 

 K. melvilli (pi. vii. figs. 1 b-d). Tlie two transition-teeth 

 have the outer cusp higher than in the preceding tooth ; in 

 the next outer tooth the cusp is still nearer the point, and 

 thence up to the margin it is not seen at all, all being curved 

 and aculeate in shape, becoming small and narrower next the 

 margin, and a few here show a bicus[)id point. 



Jaw with a central projection. 



In the genitalia the shaft of the penis is short and tliick- 

 ened, with the S folds bound together and concealed. 



In the specimen dissected out of tlie smallest shell men- 

 tioned above, only the remains of a spermatophore were 

 found in the spermatheca. In another specimen I was 

 fortunate enough to fiiul one quite perfect. The flume next 

 the capsule has 8 main spines, while on the other side in a 

 continuous row there are 25, which I render by ^^ ; it ter- 



