SYSTEMATIC INDEX. XXXV 
Family PETALODONTID^E {continued). 
Page 
Janassa imbricata.38 
Fissodus.40 
Petalorhynchus.40 
-psittacinus.40 
-psittacinus, var. minor.41 
Petalodus. 42 
-acuminatus.42 
-hastingsiae.44 
-grandis.45 
-—— flabellula.45 
—— linearis.45 
-davisii.46 
-alleghaniensis . .46 
Ctenoptychius.49 
-apicalis.50 
-dentatus.51 
-lobatus.51 
-serratus.52 
Callopristodus.54 
-pectinatus. 55 
Polyrhizodus.56 
-magnus.57 
-colei.57 
-sinuosus.58 
-elongatus.58 
-attenuatus.58 
-concavus.59 
Glossodus . .60 
-lingua-bovis.60 
Mesolophodus.61 
-problematicus.61 
Family PKISTODONTID zE.62 
Pristodus.62 
-falcatus.63 
c 2 
