80 PKOCEKDINGS OF THE MALACO LOGICAL SOCIETY. 



PAHASTROrniA FILU5I,' u.sp. PI. VIII, Fig. 27. 



P. tosta iniuuta, fere recta, versus apicem iucurvo-siuuata, alba, 

 lactea, liBvigata, sub lente iudcfinite et obscurissime spiraliter arcti- 

 striata, regiouc apicali caudata, attenuata, apice ipso globulari, retuso, 

 parvo, apertura rotunda, haud incrassato, tenui. Long. 3, lat. "075 mm. 



Of very infrequent occurrence, but most likely overlooked, owing, 

 not only to its microscopical dimensions, but also to its verisimilitude 

 to a small (Jrescis or other Pteropod, multitudes of which occur in the 

 same shell-sand. 



P. Challengeri, de Folin,- is of quite different form, as is 

 P. Astnriana,^ also of de Foliu, the new species being more attenuate, 

 with apex smaller proportionately, and the concentric spiral striation 

 very nearly obsolete, though its presence is observable with aid of 

 a very powerful lens, at all events centrally. There is one acutely 

 defined annulus at tlie distance of, say, half a millimetre from the apex ; 

 with this exception the whole surface is smooth, the mouth being 

 hardly obli(iue. 



Cadulus campylus,* n.sp. PL VIII, Fig. 32. 



C. testa perparva, apud medium crassiore, arcuata, utrinque 

 attenuata, ad apicem posteriorem maguopere angusta, apertura 

 rotunda, margine pauUum obliquo, tenui. Long. 3, diam. oris '05, 

 apicales "025 ram. 



A very small, wliite, and shining Cadulus, particularly narrowed 

 posteriorly, Avhile thickened and elbowed out towards the centre. 

 The aperture is round, Avith slightly oblique margin. 



EXPLANATION OF PLATES. 

 Plate YII. 

 Fig. Fis?. 



1. Crosscia i'rj/}iia, n.f^]). 10. S. clavellosa, n.s\i. 



2. Fossartis (CoHthoni/ia)eHdmetHS,n.siy. 11. Turbonilla Heniiiu, tx.st^. 



3. Diala trilii-ata, n.s^. 12. Odostomia{PyygHlina) hervieiioides, 



4. Gcrithiopsis mathildceformis, n.sp. n.sp. 



6. Mtoniola epibathra, u.sp. 13. 0. (P.) tetterrima, n.sp. 

 G. Eiilima nisonida, n.sp. 14. 0. (P.) thelxinoa, n.sp. 



7. E. rhceba, n.sp. 15. 0. {Miralda) ima, n.sp. 



8. Mucronalia lepida, n.sp. 16. Columbella (Seminella) comistea, n.sp. 



9. Si/rnola apei-anta, n.sp. 17. Nassa [Alectryon) jactabunda,n.&p. 



Plate VIII. 



18. M'argineUa(Volvaria)a}n)/drozo>ni,u.sp. 26. Volvula compacta, n.sp. 



19. M. [V.) eumorpha, n.sp. 27. Parastrophia JUmn, n.sp. 



20. DriUia TJiisbe, n..sp. 28. Scalaria canephora, n.sp. 



21. Miingilia bipUcata, n.sp. 29. S. {Cirsotrcma) bona, n.sp. 



22. Daphnella Sahrina, n.sp. 30. Turbonilla yPijrgostylis) Delia, n.sp. 



23. D. {Plenrotomella) Alcestis, n.sp. 31. Mucronalia bizonula, n.sp. 



24. B. (P.) itama, n.sp. 32. Caduius campylus, n.sp. 



25. Cylichna collyra, n.sp. 



Filum, ' a thread,' from the <ip])carance. 

 liep. "Challenger " Exped., vol. xv, Zool., p. 681. 

 Les Fonds de la Mer, vol. i, pp. 172, 218, pi. xxix, fig. 

 Ka^TTt'Aoy, ' bent.' 



