122 Proceedings of the Royal Society of Victoria. 



Fig. 12. — Siphonotreta 7?inccoyi\ sp. iiov. Peduncle valve of a 



large specimen. x 2. [229.] 

 Fig. 13. — S. fnaccoyi, sp. nov. Dorsal valve of a smaller 



specimen, broadened by crushing. x 4. [199.] 

 Fig. 14. — S. maccoyi, sp. nov. Interior of a dorsal valve, 



distorted by pressure. x 4. [198.] 

 Fig. 15. — Hyolithes leptus, sp. nov. Natural size. [197.] 

 Fig. 16. — 7 Rhitiopterocaris ?/iaccoyi, Etheridge, fil., sp. Two 



valves overlapping, and laterally displaced, the 



dorsal edges being outside. Natural size. [245.] 

 Fig. 17. — R. maccoyi, Eth., til., sp. Two united valves. x 2. 



[184.] 



