The Austral Rhynchonellacea. 193 



Plate XII. 

 All figures on this plate enlarged five times. 



Fig. 16. — Crura of Hemithyris psittacea^ Chemnitz, sp. North Seas. 



Recent. 

 ,, 17. — Crura of Tegulorhynchia coelata, T. Woods, sp. Table Cape, 



Tasmania. Miocene (Janjukian). P. A. Cudmore coll. 

 ,, 18. — Crura of T. thomsoni, sp. nov. Table Cape, Tasmania, Mio- 

 cene (Janjukian). F. A. Cudmore coll. 

 „ 19. — Dental plate of Hemithyris psittacea, Chemn., sp. North Seas. 



Recent. 

 „ 20. — Dental plate of Tegulorhynchia coelata, T. Woods, sp. Table 



cape, Tasmania. Miocene (Janjukian). Dennant coll. 

 ,, 21. — Pedicle aspect of T. thomsoni, sp. nov. Table Cape, Tasmania. 



Miocene (Janjukian). F. A. Cudmore coll. 

 ,, 22. — Pedicle aspect of T. squamosa, Hutton, sp. New Zealand, 



Ototaran. J. A. Thomson, coll. 

 Legend. — P., pedicle passage; c, crural lobes; d.s., dental sockets; dt., 



deltidial plates; dp., dental plates; s., septum. 



Plate XI IT. 

 Surface Ornament. — All figi'res on this plate enlarged five times. 



Fig. 23. — Tegulorhynchia (?) tuhulifera, Tate, sp. From the dorsal 

 valve. Muddy Creek. Ollgocene (Balcombian). F. A. 

 Cudmore coll. 



„ 24. — T. tubulifera, Tate, sp. From side of ventral valve. Grange 

 Burn, Muddy Creek. Miocene (Janjukian). Dennant coll. 



„ 25. — T. coelospina, sp. nov. From side of ventral valve. Table 

 Cape, Tasmania. Miocene (Janjukian). Dennant coll. 



,, 26. — T. squa7Hosa, Hutton, sp. From sinus of ventral valve. Tre- 

 lissic. New Zealand. Ototaran. J. A. Thomson coll. 



.„ 27. — T. coelata, T. Woods, sp. nov. From sinus of ventral valve. 

 Waurn Ponds, near Geelong. Miocene (Janjukian) . Den- 

 nant coll. 



.„ 28. — T. thomsoni, sp. nov. From sinus of ventral valve. Table 

 Cape, Tasmania. Miocene (Janjukian). F. A. Cudmore, 

 coll. 



.„ 29. — T. nigricans, Sowerby, sp. From sinus of ventral valve, 

 Amuri District, North Canterbury. Tertiary (?Up. Mio- 

 cene). Von Haast coll., in Nat. Mus. 

 „ 30. — T. nigricans, Sow., sp. From sinus of ventral valve. New 

 Zealand. Recent. Dredged. 



