SYSTEMATIC INDEX 
OF 
GENERA AND SPECIES 
DESCRIBED IN PART I. 
Page 
Subclass ELASMOBRANCHII. 1 
Order ICHTHYOTOMI . 1 
Family PLEURACANTHIDiE. 1 
Pleuracanthus. 2 
-decheni. 3 
-laevissinras. 5 
-robustus. 7 
-arcuatus ......... 8 
-cvlindricus ........ 8 
Diplodus gibbosus.10 
-tenuis.H 
-parvulus.12 
-latus.1^ 
-compressus.12 
-gracilis.13 
-acinaces.13 
-bohemicus.14 
Chondrenchelys.15 
—— problematica.16 
c 
