156 rKOCEEDIKGS OF THK MALACOLOGICAL SOCIETY. 



Family CAPULID^. 



11. Plesiothyeeus Newtoni, n.sp. Fl. XII. Fig. 27. 



Testa capuliformis, regularitcr ovata, dcpressiuscula, sordide albida, 

 extus undique cancollata, apice postico, incui'vato ; labrum planulatuni 

 siib-septiforme, extus acutum, intus carina cximie nodulosa margina- 

 tum. Long. 7, lat. 5, alt. 2-50 mm. 



A remarkable little shell, distinguished by a character, I believe, 

 hitherto quite unknown among recent shells. Externally it is 

 curiously like a species of Scutellina, but the lip is flattened, forming 

 a ledge almost like the septum of a Crepidala or a Septaria ( = Navicella) 

 at the posterior end, continuing but decreasing in width at the sides 

 and anterior end ; the inner edge being bordered with a row of small 

 bead-like nodules upon a slightly raised keel. ' The nodules, which 

 are quite conspicuous on the sides and posterior, almost disappear in 

 front. 



While in doubt as to the position of this curious little shell, my 

 friend Mr. R. Bullen Newton kindly drew my attention to a similar 

 form from the Upper Eocene of Antwerp, described by M. Cossmann ' 

 under the name of Cajmlus parmophoroides, to which the same autbor 

 subsequently gave the generic name of Pies iothy reus} I have no 

 doubt that my little Hong-kong shell belongs to the same genus. 

 M. Cossraann's species is nearly identical in form, finely striated, not 

 cancellated, and the nodules on the inner edge are smaller. 



Family ADEORBID^. 



12. Adeorbis PATULi, n.sp. PL XII. Fig. 17. 



Testa late umbilicata, oblique ovalis, alba, tenuis ; spira brevis, 

 apice mucronato ; anfractus 4, rotuudati, spiraliter tenuissime striati, 

 plicis numerosis tenuissimis obliquis instructi ; anfractus ultimus latus, 

 compressiusculus, plicis evanidis ; umbilicus expansus, intus plicatus, 

 carina acutiuscula marginatus ; ajiertura lata ; labrum dextrum tenue 

 valide arcuatum ; columella oblique rectiuscula. Long. 4, diam. maj. 

 4, min. 2 mm. 



The plicae on the penultimate whorl, becoming nearly obsolete on 

 the body-whorl, are much like those prevailing in the genus Narica. 

 The umbilicus is broadly excavated, and bordered by a prominent 

 keel. 



Family EULIMID.E. 



13. EULIMA PRODTJCTA, U.Sp. PI. XII. Fig. 13. 



Testa per-elongata, alba, polita, rectiuscula, anfractus 13, vix con- 

 vcxi, sutura angustissima ; anfractus ultimus i longitudinis ajquans, 



» Joum. de Conch. 1885, p. 198, pi. viii. fi?. 2. 



"^ Auu. Soc. Koy. Maluc. l}ulj,q([iK', tome xxiii. 1888, p. 191, pi. vii. figs. 13-15. 



