EXPLANATION OP PLATE XVI. 



All the drawings were made by J. Henry Blake, excepting Fig. 18, which is by S. H. Scudder. 



Fig. 1. (1.603) (f) Liibiduromnia bormansi,?. 



2. (395) (}) Labiduromma iiiortalet^. 



3. (3832) Ci) Labiduromma avia$. 



4. (1.381) (f)Quediii8breweri. 



5. (13544) (f) Ijabiduromma avia (? . 



6. (3705) (f ) Labiduromma mortale,?. 



7. (2604) (f) Labiduromma infernum^. 



8. (10627) (I) Quediua chamberlini. 



9. (5004) (f) Labiduromma labens (young). 



10. (11208) (t) Labiduromma commixtum 9 . 



11. (11209) (f ) Labiduromma avia9 . 



12. (13546) (f) Labiduromma exsulatum9- 



(Copied by Zittel, Handb. d. palaont.. 

 Fig. 959.) 

 698 



Fig. 13. (14471) (^) Labiduromma labens^. 



14. (4736) (f) Labiduromma gilberti,? . 



15. (8334) (f) Labidurouiiua tertiarium 9 . 



16. (7118) (^) Labiduromma hibens,? . 



17. (1832) (f ) Labiduromma commixtum 9 . 



18. (14688) (I) Labiduromma tertiarium^. 



19. (316) (f) Labiduromma lithophilum 9- 



20. (13001) (;) Labiduromma mortale 9. 



21. (4925) (f) Labiduromma tertiarium (J. 



22. (11740) (f) Labiduromma avia,?. 



23. (8022) (?) Labiduromma avia9. 



24. (5278) (t) Labiduromma sp. 



