﻿XXVI SYSTEMATIC INDEX. 



A Pa e e 



Family ISCHNACANTHIDJE 20 



Ischnacanthus 20 



gracilis 21 



Family DIPLACANTHID^E 22 



Diplacanthus 23 



striatus 24 



longispinus 26 



Climatius 28 



reticulatus 28 



scutiger 29 



uncinatus 30 



macnicoli 30 



grandis 31 



gracilis 32 



(?)ornatus 32 



(?) latispinosus 33 



Parexus 33 



incurvus 34 



falcatus 34 



Subclass H0L0CEPHALI . 36 



Order CHIM^EROIDEI 36 



Family PTYCTODONTID^E 37 



Ptyctodus 38 



Rhynchodus 39 



Palaeomylus . . , 39 



Family SQUALORAIID JE 40 



Squaloraja 40 



polyspondyla 41 



tenuispina 43 



Chalcodus 43 



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