192 F. Chapman and Irene Crespin 



VII.— EXPLANATION OF PLATES. 

 Plate XI. 



Fig. 1. — Tegulorhynchia squamosa, Hutton, sp. Dorsal view of the 



topotype. Trelissick, Basin, New Zealand. Miocene 



(Oamaruian). Coll. Dr. J. A. Thomson. Circ, 2 



diameters. 



2. — T. squamosa, Hutton, sp. Ventral view of fig. 1. Circ, 2 



diameters. 

 T. coelata, T. Woods, sp. Dorsal view. Waurn Ponds, near Gee- 

 long. Miocene (Janjukian). Dennant coll. Neotyp'e, 

 from a similar horizon to T. Woods' specimen, but from 

 different locality. Circ, nat. size. 



.„ 4. — T. coelata, T. Woods, sp. Ventral view of fig. 3. Circ, nat. size. 



„ 5. — T. thomsoni, sp. nov. Ventral view. Table Cape, Tasmania. 

 Miocene (Janjukian), Crassatellites Bed. Dennant coll. 

 Circ, nat. size. 



„ 6. — T. thomsoni, sp. nov. Dorsal view of fig. 5. Circ, nat. size. 



,„ 7. — T. coelosjnna, sp. nov. Dorsal view. Table Cape, Tasmania. 

 Miocene (Janjukian). Crassatellites Bed. Dennant coll. 

 Circ, 2 diameters. 



„ 8. — T. tubulifera, Tate, sp. Part of Dorsal valve. Polyzoal 

 Limestone, junction of Grange Burn, Muddy Creek. Mio- 

 cene (Janjukian). Dennant coll. Circ. 2 diameters. 



„ 9. — T. nigricans^ Sowerby, sp. Dorsal view. Trelissick Basin, 

 New Zealand. Awamoan (Upper Miocene). Von Haast 

 coll., Nat. Mus. Circ, nat. size. 



„ 10. — T. nigricans. Sow., sp. Dorsal view. New Zealand. Recent. 

 Nat. Mus. coll. Circ, nat. size. 



„ 11. — T. nigricans^ Sow., sp. Ventral view of fig. 10. Circ, nat. size. 



.„ 12. — T. nigricans, Sow., sp. Irternal view of ventral valve, show- 

 ing dental plates. New Zealand. Recent. Nat. Mus. coll. 

 Circ, nat. size. 



,, 13. — Hemithyris psittacea, Chemnitz, sp. Internal view of ventral 

 valve, showing dental plates. Northern Seas. Recent. 

 Nat. Mus. coll. Circ, nat. size. 



.„ 14. — *' Rhynchonella haileyana,'' Tate. Dorsal view of Tate's type 

 specimen. The supposed fossil from Jemmy's Point, Gipps- 

 land Lakes. = Gyclothyris limbata, Schlotheim, sp. The 

 figured specimen from the Adelaide Museum. Circ, nat. 

 size. 



.„ 15. — Gyclothyris lim.bata, Schlotheim, sp. Dorsal view. Ciply, 

 Belgium. Upper Cretaceous (Senonian), Nat. Mus. coll. 

 Circ, nat. size. Typical example for comparison with 

 Tate's R. baileyana. 



