NATURAL SCIENCES OP PHILADELPHIA. 293 



expla:n'ation of the plates. 



Plate III. 



Fig. 1. Doras pectinifrons Coitc. 



Plate IY. 



Fig. 1. Zathorax monitor Cope ; h from below ; c from frout. 

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



Plate V. 



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

 " 2. CJmtostoimis malacops Q'0])C, ; & from below. 



Plate VI. 



Fig. 1. Gorydoras semiscutatus Cope; h from below. 

 " 2. Gorydoras trilineatus Cope ; h from above ; c from below. 



Plate VII. 



Fig. 1. Dianema longiharhis Cope ; a from above ; b from Ijelow. 

 " 2. BrocMs coeruleus Cope ; a from above ; b from below. 



Plate VIII. 



Fig. 1. Ic/uanodectes tenim Cope (adipose fin omitted by artist) ; \a denti- 

 tion. 

 " 2. Glmracidium etheostoma Co]}(i\ (\.ei\i\i\o]i. 

 " 3. TriportJieus albus Cope ; dentition. 



Plate IX. 



Fig. 1. Anacyrtus sanguineus Cope. 

 " 2. Serrasalmo iridopsis Coi)e. 

 " 3. Brocliis coeruleus Cope. 



Plate X. 



Fig. 1. GrenicicMa antJiurus Cope. 

 " 2. Megalobrycon erytliropterum Cope. 



Plate XI. 



Fig. 1. Oeophagus badiipinnis Cope. 



'' 2. Varus centrarclioidcs Cope. 



" 3. Aeara syspilus Cope. 



" 4. Acara flavilabris Cope. 

 1872.] PART III.— 20 



