604 Messrs. J. C. Melvill and J. H. Ponsonby on 
peripheriam liris brevibus, sed latis, pulcherrime expansis et 
frondosis induto, infra peripheriam ad basin convexo, et simili 
modo ac superne lirato; apertura rotundo-lunari, peristomate 
tenui, margine columellari paullum supra umbilicum reflexo. 
Alt. 6; diam. 13 mm. (sp. min.). 
50, eas ssp amaya)s 
Hab. Port Shepstone, Natal (Burnup). 
Five examples, a characteristic one being now figured ; 
the largest of all that has been yet found is unfortunately 
imperfect, having the wonderful frondose extension of the 
epidermis worn away. ‘These processes are thin, horny, 
hyaline, short but broad, and give a very striking and bizarre 
effect, rendering this one of the most strange and easily 
distinguishable of South-African Helicoids. 
Trachycystis simplex, sp.n. (Pl. XXXII. fig. 7.) 
T, testa ovato-conica, tenui, anguste sed profunde umbilicata, 
cinereo-olivacea, undique periostraco corneo, tenui, induta; an- 
fractibus 5, apicali parvo, depresso, mamillato, ceteris undique 
arcte longitudinaliter obliquiliratis ; apertura ovato-lunata, peri- 
stomate rotunde effuso, tenui, margine columellari supra paullum 
incrassato, umbilicum partim obtegente. 
Alt. 6°20, diam. 9 mm. 
Hab. Pondoland (J. Farquhar). 
A simple species, thin, with horny epidermis or periostra- 
cum, very finely longitudinally hrate throughout. Akin to 
the typical series of the genus, e. g., bisculpta, Bens., and 
Burnupt, M. & P. 
Opeas McBeani, sp.n. (Pl. XXXI. fig. 8.) 
O. testa attenuata, fusiformi, delicata, subpellucida, pallide stra- 
minea; anfractibus 10, quorum duo apicales mammosi, ceteris 
apud suturas impressis, tumidulis, longitudinaliter undique 
minute obliquistriatis; apertura parva, labro tenui, margine 
columellari fere recto, crassiusculo, nitido, albo. 
Long. 9°50, lat. 2 mm. (sp. max.). 
Hab. Boksberg, Transvaal (Burnup). 
Differing from its near ally Subulina strigils, M. & P.*, 
in its more globular apical whorls, finer striation, and 
smaller aperture. In that species, too, the last whorl is not 
so prolonged proportionately and the upper whorls are less 
ventricose than in this new form. 
* Ann, & Mag, Nat. Hist. ser. 7, vol. vill. p. 318. 
