138 Bulletin 13 26 



Explanation of Plate 17 



Page. 

 Fig. I, 2. Pleurotoynaria hiinterensis , n. s. Side 



and upper views of a very large specimen.. 12, 134 

 3, 4. Cyrtoceras kirbyi (.^) Whitfield. 



Ventral and lateral views of the same speci- 

 men 19,131 



5, 6. Cyrtoceras, sp. Ventral and lateral 



views of the same specimen 19, 131 



7, 8. Upper and lower views of the most 



abundant forms of P. hunterensis. 

 9. Dalmanella holiensis, n. s. View of "pedi- 

 cle valve 18, 130 



10, 12. Dalmanella wempiei, n. s. Views of ped- 



icle valve of different specimens 17, 129 



11, 13. Views of brachial valve of different speci- 



mens. 

 16. Syntrophia palmata, n. s. Exterior of pedi- 

 cle valve 18, 130 



14. Valve showing a partially exfoliated surface. 



15, 17. Valves showing the vascular markings. 



