Makshall. — Fauna of (lit Uainpih n Beds. 



235 



List of Hampden Mollusca. 



The following list contains all the species of Mollusca that have been 

 collected bv me at Hampden — i.e., the species that have been described 

 above and a few species that were found during 1918.* 



Turris duplex Suter 

 Tunis nexilis hicarinatus Suter 

 Turris complicatus Suter 

 Turris politus n. sp. 



Aturia sp. 

 Architectonica n. sp. 

 Clio aff. urenuiensis Suter 

 Circulus inornatus n. sp. 

 Cerithidea minuta n. sp. 

 Cerithiella tricincta n. sp. 

 Turritella symmetrica Hutton 

 Tnrritella ornata Hutton 

 Turritella rudis n. sp. 

 Struthiolaria citicta Hutton 

 kitnithiolaria minor Marshall 

 Sinum (Eunaticina) elegans Suter 

 Submargarita tricincta n. sp. 

 Ampullina waihaoensis Suter 

 Amjndlina suturalis Hutton 

 Natica zelandica Q. &, G. 

 Erato antiqua n. sp. 

 Oymatium minimum Hutton 

 Galeodea senex Hutton 

 Epitonium rugulosum lyratum (Zittel) 

 Epitonium tenuispiralis n. sp. 

 TurhoniUa antiqua. n. sp. 

 Dicroloma zelandica n. sp' 

 Fusinus solidus Suter 

 Fusinus alius n. sp. 

 Exilia waihaoensis Suter 

 Latirus dubius n. sp. 

 Siphonalia nodosa Martyn 

 tSiphonalia turrita Suter 

 Belophos incertus n. sp. 

 AJectrion sp. 



Volutoderma zelandica n. sp. 

 Cymbiola (Miomelon) corrugata Hut- 

 ton 

 Ancilla novae-zelandiae Sowerby 

 Marginella avenoides n. sp. 



Turris regius Suter 

 Turris margaritatxis n. sp. 

 Turris reticdatus u. sp. 

 Surcula hamiltoni Hutton 

 Surcula gravida, n. sp. 

 Surcula marginalis n. sp. 

 Surcula equispiralis n. sp. 

 Surcula torticostata n. sp. 

 Surcida serotina Suter 

 Surcula sp. 



Bathytoma sulcata Hutton 

 Terebra costata Hutton 

 Terebra sulcata n. sp. 

 Gilbertia tertiaria Marshall 

 Bidlinella enysi Hutton 

 Dentalium mantelli Zittel 

 Dentalium pareoraense Suter 

 Cucullaea alta. Sowerby 

 Sarepta solenelloides n. sp. 

 Sarepta. obolella (Tate) 

 Sarepta tenuis n. sp. 

 Area novae-zelandiae E. A. Smith 

 Limopsis hampdenensis n. sp. 

 Limopsis zitteli Ihering 

 Trigonia areolata n. sp. 

 Trigonia densicostcda n. sp. 

 Lima angulata Sowerby 

 Atrina sp. 



Ostrea wuellerstorfi Zittel 

 Cardium sp. 

 Pecten Jmttoni Park 



* Further collecting at Hampden resulted in obtaining a good specimen of Dicro- 

 loma zelandica which shows the aperture perfectly, though the distal portions of the 

 wings are wanting. The following additional species were collected : — 



Euihriofusus spinosus. Fusinus n. sp. 



SeiJa cfr. bulbosa. SipJionalia n. sp. 



Epitonium cfr. gracillimum. Trachus ? sp. 



Surcula, 2 n. sp. Bursonia sp. 



None of these specimens seems to have a Recent occurrence, and if that is the case 

 the percentage of Recent species in the formation sinks to y"l. The number of species 

 in the Hampden fauna is unusually large compared with the number of specimens that 

 can be found. The Recent species are in nearly all cases represented by a single specimen. 

 Area novae-zelandiae, Turritella. symmetrica, Sarepta obolella, Natica zelandica, and Lima 

 angulata are identified from bad single specimens only. (May, 1919.) 



