PLATE IV. 



Page. 

 57 



FoBBRaOCRIKOS GREEN El, n. «p 



KIk. I. AzygouB view. 

 Pig. 2. Baeal view. 



81 



POTEBIOCEINUS NEOLEi;TU9. n. 9p 



Fig. 3. Lateral view. azyKous area on the right. 

 Pig. 4. Lateral view, azygouB area OD the left. 

 FlK- B. Aiygous view 



PorEttlOUEINDS AREECTAHIU9, n sp 



Fig. 8. Azygoua view. 



PorEKlOCElNOS LABYRINIHICDB, S. A. M 



Fig. 7. Azygoua view. 



60 

 PLATT0B1NU8 POEMOSUS, Var. APPR0XIU4T08, D var 



Pig. H. Basal view. 



Fig. 9. Snmmit. 



Fig. 10. .AzygoUB view. 



Fig. II. Opposite side view. 



.... 6i 

 PL.4TVCElNUrt eUBSCITlTUJa, Q ap 



Fig. Vi. Baeal view. 



Fig. 13. Summit 



Fig. 14. Azygous view. 



Fig. IB. Opposite side view. 



PbiTVCRCNOS CONCINNULDS. D Sp 



Fig. 16. Asygous view. 

 Fig. 17. Opposite side view. 

 Fig. 18. Snmmit. 



