CLASSIFIED LIST OF FAMILIES, GENERA, AND SPECIES. 
In the following list all the groups that are described and all the 
species that are definitely referred to the genera herein treated are arranged 
according to Professor Hyatt’s classification as given in the text. The 
purpose of the list is to bring together in compact form for easy reference 
the large number of described species that are here referred to new genera. 
The classification is incomplete and in some cases probably misleading. 
For example, some of the genera under Cosmoceratida are not assigned to 
families, and it is very doubtful whether Professor Hyatt intended to place 
in Mantelliceratida all the families here arranged under that superfamily. 
It is evident that the author’s published views concerning that group had 
changed, but unfortunately he had written no revised description. It is 
therefore necessary to leave the groups classified according to the arrange- 
ment of the manuscript without inserting the names of any other super- 
families. 
Wes 
Choffaticeras Hyatt. 
barjonai. 
meslei. 
douvillei. 
Hemitissotia Peron. 
MAMMITIDA. 
Mosstsovicsup2. . 
Mojsisovicsia Steinmann. 
durfeldi. cazini. 
batnensis. 
BUCHICERATID ®. HMAKOV ARE LENG 
_ tissotizeformis. 
Buchiceras Hyatt. djelfensis. 
bilobatum. ceadouroensis. 
Roemeroceras Hyatt. Plesiotissotia Peron. 
gabbi. : michaleti. 
syriaciforme. ADS OTR, 
attenuatum. 
subplanum. Tissotia Douvillé. 
: > tissoti. 
PSEUDOTISSOTIID &. Subtissotia Hyatt. 
inflata. 
Pseudotissotia Peron. intermedia. 
galliennei. peroni. 
tunisiensis. africana. 
