312 THE JURASSIC OF NEW ZEALAND. [vol. lxxix, 



Figs. 5 a &, 5 b. Aucella plicata. Same locality. Natural size. Left valve 

 and anterior view of the same. Trechmann Coll. (See p. 266.) 



Fig. 6. Aucella plicata. Same locality. Natural size. Eight valve. 

 Trechmann Coll. (See p. 266.) 



7. Aucella plicata. Same locality. Natural size. Eight valve. 



Trechmann Coll. (See p. 266.) 



8. Aucella plicata. Same locality. Natural size. Left valve. Trech- 



mann Coll. (See p. 266.) 



Plate XVIII. 



[All the figures are reduced to two-thirds of the natural size.] 



Figs, la & lb. Phyllocerasa,ft. partschi (Stur MS.) Hauer sp. Lias (Middle ?), 

 New Zealand. (B.M. No. C 5201 A.) 1 a, lateral view; 1 b, sec- 

 tional outline. (See Appendix, p. 290.) 



2 a, 2 b, & 2 c. Rhacophyllites aff. diopsis (Gemmellaro). (B.M. 



No. C 5200.) 2a & 2b, lateral views ; 2 c, peripheral view. (See 

 Appendix, p. 292.) 



3 a & 3 b. Thysanoceras cf . cornucopia (Young & Bird). (B.M. 



No. C 5202.) 3 «, lateral view ; 3 b, septal surface at the larger 

 end. The impressed dorsal zone is narrow, but distinct. (See 

 Appendix, p. 293.) 



Discussion. 



Dr. F. A. Bather considered that the geologists and paleon- 

 tologists of both this country and New Zealand were equally 

 indebted to the Author for so carefully collecting these specimens 

 and bringing them to one of the great centres where they could 

 be compared with similar fossils from other parts of the world, 

 and thus elucidate, not merely their own affinities, but the wider 

 problems of geology. Thus the palaeontologists of New Zealand 

 were provided with correct determinations for their fossils, and the 

 officers of the British Museum learned the correct localities and 

 horizons for material previously acquired under less favourable 

 conditions. Their thanks were due to the Author and to Dr. Spath 

 for their very careful work. 



The Author expressed his appreciation of Dr. Bather's remarks, 

 and recalled the pleasure that the collection and investigation of 

 Jurassic and other fossils in New Zealand had afforded him. 

 Bather than make new species, he was eager to trace the 

 affinities of the New Zealand fossils with forms that occur in the 

 Andes of South America, the Jurassic of Western Australia, the 

 Malay Islands, New Caledonia (so far as that region is known), 

 and the Kutch and Spiti Beds 'of India. The New Zealand 

 Jurassic showed faunal affinity with all these regions, together 

 with a certain individuality of its own. 



