CHRONOLOGICAL 



43 



g. — lamesoni. 

 Platypleuroceras aureum, Simpson sp. 1855 . 



Uptonia ignota, Simpson sp. 1855 



ripleyi, Simpson sp. 1843 



Uptonia obsoleta, Simpson sp. 



:8 4 3 



obsoleta. 



e. — brevispina. 

 Parinodiceras reineckii, Quenstedt sp. 1884 



d. — polymorphus. 

 J. Sowerby sp. ii 



Fimbrilytoceras nmbriatum 



G.-t 



Kallilytoceras interlineatum, nov. G.-t. . . 



Polymorphites jupiter, d'Orbigny sp. 1850 

 mixtus, Quenstedt sp. 1846 

 trivialis, Simpson sp. 1843 



c. — phyllinns. 

 Homoxynoticeras homceum, nov. G.-t. . . 

 Kleistoxynoticeras columellatum, nov. G.-t. . 

 Metoxynoticeras oppeli, Schloenbach sp. 1863 . 

 Phylloxynotites phyllinus, nov. G.-t. 



Plate. 



92 



130a 

 204a, 



- 



b. — peregrinus. 



a . — Phricodoceras . 



Jamesonites reticulatus, nov. G.-t 



Phricodoceras cornutum, Simpson sp. 1843 



lamellosum, d'Orbigny sp. 1844 



quadricornutum, Simpson sp. 1855 



407 



32 



149a, b, c. 

 i 4 9d. 



33 



Vol. 



I 



1 

 I 



JI 



. 748a, b. VII 



II 

 III 



575 V 



576 V 

 574 V 

 465 V 



IV 



I 



III 



III 



I 



Date of 

 issue. 



xii, 09. 

 iii, 10. 

 xii, 09. 



1. M 

 xii, 27. 



111, iy. 

 i, 21. 



v, 12. 



vi, 25. 

 vi, 25. 

 vi, 25. 

 ii, 24. 



vin, 23. 

 iv, 11. 

 iii, 20. 

 vi, 20. 

 iv, 11. 



9. Deroceratan. 



s. — leckenbyi. 



Apoderoceras ferox, nov 541 



hamiltoni, Simpson sp. 1843 . . . . 530a, b. 



lobulatum, nov. G.-t. 235 



tardarmatum, nov. 542a, b. 



triornatum, nov 783a, b. 



r. — defluxum. 



Epideroceras defluxum, nov 426 



exhaeredatum, nov 441 



q. — Euechioceras. 



Euechioceras no bile, Trueman & Williams 1925. G.-t. 482* 



[ = Leptechioceras aplanatum ; S.B. non Hyatt .. 482 



Stenechioceras angustilobatum, T. & W. 1925. G.-t. 697 



p. — aplanatum [Metechioceras]. 



Metechioceras aplanatum, Hyatt sp. 1889 .. .. 640 



Paltechioceras elicitum, nov. G.-t 483 



o. — macdonnellii. 



Leptechioceras macdonnellii, Portlock sp. 1843 . . 443 



n. — planum. 



Leptechioceras planum, Trueman & Williams 1925 696 



m. — Plesechioceras. 



Plesechioceras typus, nov. G.-t 694 



Pleurechioceras typicum, nov. G.-t 695 



