490 Dr. J. C. Melvill and Mr. J. H. Ponsonby on 



of the most elaborate in its architecture. The different 

 character of the labial tooth separates it from coIunmeUa, 

 M. & P., while montana possesses another whorl at least 

 and is altogether larger. Indeed, it is hardly comparable 

 with these or their immediate allies. The mouth is differently 

 formed from /li/psoma, described in this paper ; indeed, these 

 two stand together as most interesting additions to this 

 wonderfully varied genus. 



Helicarion pu/iii'lio, sp. n. (PI. VIII. fig. 11.) 



H. testa parva, planulata, succineata, tenui, breviter obscure perfo- 

 rata ; anfractibua 3, quorum apicalis submamillatus, nitidus, 

 suturis impressis, ultimo anfractu efiuso ; apertura late lunari, 

 pcristomatetenuissimo, marginem super columellaremobseurissiiue 

 refiexo. 



Alt. 4, diam. 7 mm. 



JIab. Zoutpansbera, Transvaal. 



At once distinguished from all South-African congeners 

 yet known to us by its small size. The anatomical details of 

 this species, as well as the next, are at present unknown, but 

 the shells of both seem distinct enough to warrant description. 



Helicarion russofulgens, sp. n. (PI. VIII. fig. 12.) 



H. testa elliptica, pervitrea, angustissime perforata : anfractibus 4, 

 quorum apicales leute subconici, ad suturas impressis, nitidis, 

 tota superficie Jsete succineata, uhimo supra medium (in typo) 

 obscure transversim rubro-fasciato ; apertura magna, rotundo- 

 lunari, peristomate tenuissimo. 



Alt. 6, diam. 11 mm. 



Hah. Eshowe, Zululand ; also what appears to be the 

 same species from Hilton Road, JMaritzburg, Natal. 



A very beautiful, shining, glassy, reddish-yellow species, 

 the body-whorl (in the type specimen) obscurely once-banded 

 above the periphery, but some examples are plain. Aperture 

 large, roundly lunate. We cannot compare it closely to any 

 other South-African species ; the dark amber colour is note- 

 worthy and the form peculiar. The surface of the body- 

 wdiorl, at first sight appearing smooth, is in reality somewhat 

 malleate and irregularly obliquely scratched. 



Natalina lighifootiana, sp. n. (PL VIII. fig, 13.) 



N. testa ovata, cinereo-alba, epidermide cornea contecta, tenui, 

 parum nitida, profunde sed anguste umbilicata ; anfractibus ad 



