SMITH : LAND SHELLS FROM NEW GUINEA. ig 



lete vel obtusissime angulatus, prope aperturam vix descendens ; 

 apcrtura obliqua, lunata ; peristoma tenue, supra umbilicum 

 anguste expansum et concave reflexum. 



Diam. niaj. i6 millim., min. 13^, alt. 8. 



In addition to the fine lines of growth, indications of spiral 

 striae are observable under a strong lens. 



4. Rhysota hercules, Hedley. 



Oxytes hei'cii!es, Hedley, Proc. Linn. Soc, New S. Wales, 

 1891, vol. vi., p. 70, pi. ix., figs. I, 2 : Smith, Con- 

 chologist, vol. ii., p. loS. 



Var. = 0. flycnsis, Hedley, I.e. p. 71, pi. ix., figs. 3,4; vol. 

 ix., p. 390, pi. XXV., figs. 16 and 17 (jaw and radula). 



Hab. : Fly River (Hedley). 



I cannot agree with Mr. Hedley in separating the form 

 flyensis as a distinct species. The slightly more elevated spire 

 of the type does not prove a constant character, judging by the 

 series of specimens I have examined. Both forms have a pink 

 peristome, the sculpture is practically the same, and the perio- 

 stracum is similar. The chief distinction consists in the differ- 

 ence of the ground colour. In hercules it is livid purple on the 

 underside, generally darker towards the circumference than near 

 the centre ; whereas in flyensis it is white with a broad blackish 

 marginal zone. The colour of the upper surface in fresh speci- 

 mens (Mr. Hedley's were " dead shells ") oi flyensis is like that 

 of lievciilcs. Two specimens of the former in the Museum have 

 the peristome of a very dark rich brown, becoming pinkish in the 

 umbilical region. 



5. Omphalotropis papuensis, n. sp. (I'l. II., Fig. 19). 



Testa parva, anguste umbilicata, ovato-conica, pallide vel 

 rufescente cornea, subnitens ; spira conica, ad apicem subacuta ; 

 anfractus 5-5^- convexi, regulariter accrescentes, sutura profunda 

 sejuncti, lineis incrementi obliquis tenuissimis striati, ultimus ad 

 peripheriam lira filiforme cinctus, infra convexus, circa umbilicum 

 angustum rotundatus, baud angulatus ; apertura rotundata, sed 

 superne paulo acuminata ; peristoma simplex, marginibus callo 

 tenui junctis, columellari rufescente, leviter incrassato et 

 reflexo. 



Longit. 4 millim., diam. 3. Apertura 2 longa, i|- lata. 



