xxvi 
Subclass 
Order 
SYSTEMATIC INDEX. 
Fatro 
Family ISCHNACANTH1F.E . 
. 80 
Ischnacantlius 
20 
• . * • • • N/ 
-gracilis 
.... 21 
Family DIFLACAXTIIIIXE . . 
22 
Dipl acanthus .... 
23 
-striatus 
24 
-longispinus 
26 
Climatius. 
28 
- reticulatus . 
28 
-scutiger . . 
29 
-unci nates . 
30 
--macnicoli . . 
Of i 
oU 
-grandis .... 
31 
-gracilis .... 
32 
-(?) ornatus. 
82 
--(?) latispinosus 
33 
OO 
l arexus. 
oj 
-incurvus 
34 
-falcatus 
34 
HOLOCEFHALX 
CE1M M E 01D EI 
Family PTYCTODOXTIDJE 
•/ 
Ftyctodus . 
Ithynchodus . 
FalcC'Omylus . 
Family SQ UA LO11A111) Jh* 
Squaloraja 
—-— polyspondyla 
- teuuispina 
Chalcodus 
36 
36 
o 
O i 
38 
89 
39 
10 
10 
41 
43 
