NEWTON : MALAY TRIASSIC PELECTPODA. 135 



rather wide spaces. An oblique slit is present beneath the umbonal 

 region, which marks the locality of the anterior dental process. The 

 posterior margin is produced and sloping. 

 Dimensions. — Height 13, length 16 mm. 



EXPLANATION OF PLATE XII. 



(All the figures are drawn natural size.) 



Fig. 1. Chlamt/s Valoniensis, Leymerie. 



,, 2. Actinode&ma Bellamyi, n.sp. 



, , 3. Pteria Pahangcnsis, n.sp. 

 „ 4. 



>> '5- ,, ,, (y° un g form). 



,, 6. Gervillia infiata, Scnafhautl. 



,, 7. Pteroperna Malay ensis, n.sp. 



,, 8. Plcurophorus elongatus ? , Moore. 



,, 9. Myophoria ituequicostata, Klipstein. 

 „ 10. 



,, 11. Myophoria, related to 31. Malay ensis, n.sp. 



,, 12. Myophoria ornata, Miinster. 

 „ 13. 

 ■„ 14- 



,, 15. Myophoria Malayensis, n.sp. 



,, 16. Myophoria, sp. 



,, 17. Mytilus, cf. M. minutus, Goldfuss. 



VOL. IV. — OCTOBER, 1900. 10 



