The Waitotaran Faunule at Kaawa Creek—Part I By C. R. Laws, D.Sc., University College, Auckland (1934). [Read before the Auckland Institute, June 19, 1935; received by the Editor, June 28, 1935; issued separately, June, 1936.] Introduction. Owing to the lengthy nature of the full treatment of the faunule at Kaawa Creek, it has been found necessary to submit the results of the work in two separate parts. The present paper embodies general discussion on the faunule as a whole, along with detailed consideration of the Pelecypoda. Part 2, which will appear later, contains treatment of the Gastropoda. For a number of years Professor Bartrum and his students have frequently visited Waikato Heads and Kaawa Creek for the purpose of studying the general geology of those districts. It was found impossible to devote more than a very limited amount of time to the collection of molluscs from the fossiliferous beds at Kaawa Creek, but each party brought back some material, and in this way a number of new forms has been added to the faunal list. In April of 1934 Professor Bartrum and the writer visited the beds with a view to investigating the fauna more thoroughly, and as a result the number of species and genera has been very considerably increased. Most of the new records have been recovered from sievings of matrix. In all, 119 species have been added since the faunule was described by Bartrum and Powell in 1928. Of these 86 were obtained by Professor Bartrum and the writer during their collecting this year, the sieving of matrix yielding over 70. The total number of species so far known to constitute the faunule stands at 212. Relation to Miocene Faunas. An interesting feature is the presence of a substantial Miocene element in the faunule, shown by the occurrence of Finlayella, Notacirsa,* The gastropods referred to throughout this discussion are treated in Part 2 of the work on the faunule, to appear later, in Part 2 of this volume. Parvimitra, Inglisella, the “Liracraea” of this revision, Kaweka, Waikura, Pareora, Zclandiella, Zeacuminia, and the large Polinices. Kaweka, Waikura and Hipponix centrifugalis were previously known only in the Tertiary deposits of Gisborne District—Kaweka from the Upper Miocene (Taranakian), Waikura from the Upper Oligocene (Hutchinsonian), and Hipponix centrifugalis from the Lower Miocene (Awamoan). The remaining genera, along with Pareora striolata, are very commonly widespread in Miocene beds in the South Island. The first eight genera named above constitute new records for the Pliocene of New Zealand.