166 



AWATERE. 



Fusus — 3 sp., Voluta — 2 sp., Natica, Turritella — 3 sp., Struthiolaria — 



6 sp., Crepidula — 3 sp., Calyptreea, Trocliita, Ancillaria, Balanus, Pectuneulus, 

 Ostrea — 2 sp., Piiina, Mactra, Lutraria, Artemis, Tapes, Tellina, Cucullaea, 

 Dentalium, Purpura. Total, 34 sp. : recent 26, extinct 8. 



Motanau. 



Fusus, Voluta — 2 sp., Natica — 2 sp., Struthiolaria — 3 sp., Turritella, 

 Crepidula, Venericardia, Pecten, Ostrea, Terebratula, Cardium, Pectunculus, 

 Mactra, Dosinia, Artemis, Tapes, Venus — 4 sp., Sanguinolaria, Lutraria, 

 CuculliTea — 2 sp., Dentalium — 2 sp., Tellina, Mytilus, Trochus, Nerita, Balanus, 

 Potella, Imperator, Pholas, Saxicava, Pinna, Modiola, Struthiolaria. Total, 

 42 sp. : recent 34, extinct, 8. 



"Wanganui. 



Murex — 3 sp., Fusus — 6 sp., Trichotropis, Trophon, Mangelia, Triton, 

 Buccinum — 4 sp., Purpura, Lymnsea, Ancillaria, Cassis, Trochus — 2 sp., 

 Imperator, Botella, Pleurotoma, Auricula, Cerithium, Turritella — 3 sp., 

 Scalaria, Mytilus — 2 sp., Ostrea — 3 sp., Pinna, Modiola — 2 sp., Venus — 8 sp., 

 Dosinia, Terebratula, Terebratella, Waldheimia — 3 sp., Rhynchonella, Cardita, 

 Tapes, Artemis, Lucina — 2 sp., Cardium — 3 sp., Venericardia, Natica — 3 sp., 

 Voluta — 2 sp., Struthiolaria — 3 sp., Pileopsis, Crepidula — 3 sp., Calyptreea, 

 Trocliita, Emarginula, Hemitonia, Lima — 2 sp., Balanus, Echinus, Echin- 

 arachnius, Turbinolia, Vermetus, Teredo, Coral- — 2 sp., Bryozoa (1), Pecten — 



7 sp., Mactra — =3 sp., Area, Chamostrea, Nucula, Corbula, Tellina — 2 sp., 

 Lutraria, Panopa3a, Mya, Pectunculus — 4 sp., Mesodesma — 3 sp., Donax, 

 Psammobia, Sanguinolaria, Myodora. Total, 121 sp. : recent 109, extinct 12. 



Grand Total, 290 sp. : recent 229, extinct 61. 



Art. XL. — On the Tertiary Series of Oamaru and Moeraki* By 

 Charles Traill. 



[Extract from a letter to Dr. Hector, May 25, 1869; — -read before the Wellington 

 Philosophical Society, September 18, 1869,] 



I beg to communicate some observations concerning a formation which, in 

 this district, rather puzzles me. I call it the " Blue clay" formation for want 

 of a better name, that being the usual term for the principal deposit of it that 

 I have seen. Very near Hampden, a well, sunk by Mr. Gleeson, for, I believe, 

 300 feet, did not penetrate through it ; but it is often yellow or yellowish-brown, 

 and not unfrequ entry forms hard rock, as you are doubtless aware. I myself 

 have not noticed it north of the lower Waitaki, south of the Moeraki boulders, 

 or west of Mr. Feren's station on the Kakanui, but have seen specimens of it 

 from other parts of Otago and Canterbury. You probably know whether the 

 Awatere blue clay contains similar fossil remains or not. 



Some time since I was endeavouring to work up the fossil shells of this 

 formation, with the view of determining approximately the proportion that 

 has become extinct. 



Of course, in a collection of fossils, we must expect a number on which 

 we cannot pronounce with certainty, by reason of their imperfect condition, as 

 I need hardly say ; but I have been at pains to procure and lay bare, at least 

 one good specimen of each species, so as to reduce the doubtful cases to a com- 

 paratively small number. Striking these off until further light is thrown on 

 them, and reckoning, on the one hand, those between which and the recent I 

 am unable to distinguish any difference ; and on the other hand, those which 



* See Mantell, "Quart. Journ. Geol. Soc," Vol. vi., p. 333. — Ed. 



