DANFORD : NOTES ON THE SPEETON AMMONITES. 113 
specimen seems to agree with figures of C. fissicostatum. Ex- 
amples of Bel. Ewaldi found near the same spot increase the 
probabihty of this determination being correct, and of the ex- 
istence of the separate zone suggested by the presence of that 
belemnite. 
As there is so httle to add either as regards species or their 
distribution to Mr. Lamplugh's " Table of the Speeton Cepha- 
lopoda " (op. cit), it seems unnecessary to give another list 
of the Speeton Ammonites, but the few identified species of 
Crioceras may be enumerated. Some of my specimens have 
been examined and determined by Dr. A. von Koenen, others 
compared with the figures and descriptions of his great work 
on the Ammonitidae of the North German Neocomian.* There 
can, however, be little doubt that many additions to this list 
might be made by anyone well acquainted with the forms of 
the group. 
I have in conclusion to thank Dr. A. von Koenen, Mr. G. W. 
Lamplugh, Mr. G. Crick, and Dr. Kitchin for their kind assistance 
in the determination of specimens, and Mr. W. Crofts, Mr. J. W. 
Stather, and Mr. T. Sheppard for their help in field and other work. 
Table of the Speeton Criocerata. 
*Crioceras Duvali d'Orb . . 
* ,, semicinctum Roem . . 
* ,, Puzosianum ? d'Orb.. 
raricinctum v. Koen. 
* Matheroni 
Strombecki v. Koen 
? fissicostatum Roem. 
C. mid-lower, to D2 ? 
C. mid. 
C. 
C upper. 
B. lower. 
Zone with Bel. 
Ewaldi ? 
* " Die Ammonitiden des Nord-deutchen Neocom (Valangine 
Hauterevien, Barremien und Aptien) " von Dr. A. von Koenen (Abhand- 
lungen der Koniglich Preussischen Geologischen Landesanstaldt und 
-Bergakademie) Neue Folge Heft 24, Berlin, 1902. 
