NATURAL SCIENCES OF PHILADELPHIA. 293 



EXPLAITATIO^ OF THE PLATES. 



Plate III. 



Fig. 1. Doras pectinifrons Cope. 



Plate IY. 



Fig. 1. ZatTiorax monitor Cope ; b from below ; c from front. 

 " 2. Otocinclus vestitus Cope; 6 from above; c head, side view. 



Plate Y. 



Fig. 1. Physopyxis lyra Cope; h from below ; c from front. 

 " 3. Chcetostomus 7nakccops Coi^e; 5 from below. 



Plate YI. 



Fig. 1. Corydoras semiscutatus Cope; b from below. 

 " 3. Corydoras trilineatus Cope ; b from above ; c from below. 



Plate YII. 



Fig. 1. Dinnema longibarbis Cope ; a from above ; b from below. 

 " 3. BrocMs coeruUus Cope ; a from above ; b from below. 



Plate YIII. 



Fig. 1. Iguanodectes temiis Cope (adipose fin omitted by artist) ; la denti- 

 tion. 

 " 2. GJiaracidium etheostoma Cope; (\.eni\iio\x. 

 " 3. Triportlieus albus Cope; ^QMiiiiorx. 



Plate IX. 



Fig. 1. Anacyrtus sanguineus Cope. 

 " 3. Serrasalmo iridopsis Cope. 

 " 3. BrocMs coeruleus Cope. 



Plate X. 



Fig. 1. CrenieicJda anthurus Cope. 

 " 2. Megalobrycon erytliroptertim Cope. 



Plate XI. 



Fig. 1. GeopJiagus badiipinnis Cope. 



" 2. Varus centrarchoides Cope. 



" 3. Acara syspilus Cope. 



" 4. Acara flavilabr is Cope. 

 1872.] part III.— 20 



