INTRODUCTION. vil 
MALACOPTERYGII. 
Siturip#. Entire No. of species 3 whereof new 2 Brought up . : . 30 21 
CyYpRINIDE . Q ° d ot (hes 5 5 CyYCLOPTERID EZ 2 2 
Esocipz . : 1 EcCHENEIDID © 1 
SALMONIDE. 8 if ANGUILLID® : é : 5 @ 6 5 ee? 
CLUPEIDE . . 5 5 [perhaps more.] 
PLEURONECTIDE . stole ee 3 5 ll 
{probably more. ] 
30 1 Tora. - : : . 39 ToTaL, NEW 25 
LOPHOBRANCHIL. 
Synenatnip®. Entire No. of species . . 3 whereof new . - 5 3 
PLECTOGNATHI. 
Terropontip&. Entire No. of species. 7 whereof new . 4 
BavisTip® 5 : 5 3 5 , el) 6 5 ‘ A * 
Tora. 6 : 5 : : 5 LP TorTaL, NEW —  ® 
CYCLOSTOMI. 
Perromyzonip&. Entire No. of species . . 1 whereof new. : eel 
TOTAL IN THE SEVERAL ORDERS. 
AcanTuopTeryGi. Entire No. of species . . 82 whereof new : . 41 las A aX: a 
MALacopreryYGil A C F . 5 Bh) ° : : : + 25 = Le >) 
LopHoBRANCHII é Fs : fs : 4) 3 ~/ 
PLECTOGNATHI . ‘ : fs 5 ; 12 : : ; : on) d/ 
Croneritiite Me 6 © Gee ey ae yee ie ll vel 
Granp ToraL . 5 2 3 137. Granp ToraL, NEW . 79 
It appears from the above table that of the entire number of species, three- 
fifths belong to the Acanthopterygian fishes,—rather more than one-fourth to the 
Malacopterygian,—and about one-eighth to the remaining orders united. 
In the Acanthopterygians, the xew species amount to one-half; in the Mala- 
copterygians, to about two-thirds ; in the remaining orders together, to rather 
more than one-half. 
Looking, therefore, to the entire number of species described, the Acanthop- 
terygians prevail ; and it is in the same order that there are most new ones: but 
looking to the proportion, which in each order the new ones bear to the entire 
number, it is among the Malacopterygians that this proportion will be found 
highest. 
Restricting our view, it will be also seen, in the Malacopterygians, that the 
new species are relatively most numerous in the fresh-water groups, such as the 
Siluride, the Cyprinide, and Salmonide, in which three families taken together, 
