South- African Land-Mollusca. 575 



Kerkoj'horus vi'tah's, ]M. & P. (PI. III. fig. 3 ; 

 PI. XIV. tigs. 1-1^ ; PI. XV. fig. 2.) 



llelicarion vitalis, M. k P., Ann. & Mflf.'. Nat. Hist. ser. 8, vol. i. 

 February 1908, p. l;j.3, pi. vii. lig. 4 (shell). 



Original description : — 



■• //. testa pertenui, vitrea, vivide ochracea, rimata, globoso-couica ; 

 aiifractibus 4^, apice ipso obtuso, cteteris ad suturas imprcssis, 

 ultimo rapide accrcsccnte ; apertura rotundo-lineari ; peristomate 

 papyraceo, tcnuissimo, apud regiouem umbilicarcm paullum in- 

 crassato et rellexo. 



"Alt. 12, diam. 15 mill. 



""Hah. Port Shepstone, Natal [Bumup). 



*' A very beautiful globose, transparent sliell, tinted with 

 )»ale ochre, which seems distinct from all tiie species liitherto 

 enumerated from this region." 



The animal is very pale in colour as preserved in spirit, 

 wliicli in some cases seems to bleach the things put in it. 



The posterior part of the foot very lengthened, the lobe 

 over the mucous gland (PI. III. fig. 3) very long and 

 pointed. The right sliell-lobe broad and very long; the left 

 triangular and pointed, large, on a broad base. The left 

 dorsal lobe in two parts, the posterior one very small. The 

 visceral sac near the mantle-margin and over the branchial 

 cavity is quite plain ; adjacent to the kidney and heart there 

 are a few white spots. With the liver close white mottling 

 commences, and towards the apex that portion covered 

 externally by the shfU is all white. 



The generative organs (PL XIV. figs. 1, 1 a) compare 

 well with those of Kerkophorus phccdimus, M. & P., even to 

 the closely coiled state of the penis {vide fig. 7, PI. XIII.). 

 The spermatophove (PI. XV. fig. 2) was secured in a most 

 perfect state, and is of the same type as in that species, 

 differing in small points of detail. It has 27 branching 

 spines on one side and two on the other next the capsule. 

 On PI. XIV. fig. 1 h the form of the branches terminating in 

 bifid points is shown. 



The radula (PL XIV. figs. Id, \ e) has more teeth in the 

 row than any other species of these African genera yet 

 examined by me, having a formula 



126 . 1 . 12 . 1 . 12 . 1 . 126, or 139 . 1 . 139. 

 It is also remarkable by the admedian teeth being finely 

 serrated on the margin, beginning with the thirteenth tooth, 

 and this character continues to the margin. 



