Cheeseman. — On the Mollusca of Auckland Isthmus. 163 

 Class II.— GASTEOPODA. 

 Oeder I.— PECTINIBEANCHIATA. 



Sub-Order 1. Toxoglossa. 



Pleurotomidae. 



4. Pleurotoma zealandica, E. A. Smith. Sandy bays between 



the North Head and Lake Takapuna, at or below low 

 water-mark. 



5. P. albula, Huttou. A few worn specimens, doubtfully 



referred to this, have been dredged in Eangitoto Channel. 



6. Drillia ynaorum, E. A. Smith [P. buchanani, Hutton). 



Dredged in Eangitoto Channel. 



7. D. novce-zealandicB, Eeeve. Rare. Two specimens obtained 



on the sandy beach near Lake Takapuna. 



8. D. protensa, Huttou. Eare. Sandy beach near Lake 



Takapuna. 



9. Clathurella sinclairii, E. A. Smith. Dead shells are cast up 



in great abundance on all the sandy beaches in Auckland 

 Harbour, but I have never been able to obtain a living 

 specimen, 



10. Daphnella lymneiformis. Living specimens are occasionally 



thrown up after storms. 



Terebridse. 



11. Terebra tristis, Desh. Muddy and sandy places below half- 



tide, not micommon. 



Sub-Order 2. Rhachiglossa. 



Marginellidse. 



12. Marginella muscaria, Lam. Common. Living specimens 



can often be obtained crawling about near low water- 

 mark in sandy places. 



Volutidse. 



13. Valuta (Alcithoe) pacifica, Lam. Rare in Auckland Harbour, 



although common enough m many other places. 



Fasciolaridse. 



14. Fusus australis, Quoy et Gaim. Eare. 



15. Taron dubius, Hutton. An abundant shell between tide 



marks, in rocky places, under stones, etc. 



Mitridse. 



16. Turricula [Pusio) rubiginosa, Hutton. Not uncommon 



under stones near low water-mark. 



