A LEAF-MIMICKING FISH. 



305 



the only portion of the head naked. Scales of sides regularly 

 imbricate, without lateral line pores; dorsal and anal partially 

 depressible into a scaly sheath, the spines alternating when 

 depressed. The scales of the sides roughened on half their 

 exposed part, margined with very fine hyaline spinules. 



FIG. 3. -Drawing of another specimen by W. S. Atkinson. 



Four gill arches, lower arch of the first one with eleven rakers, 

 the first a spinulous patch without projection, graduated to the 

 last one w r hich is about two thirds as long as the eye; all of them 

 with numerous small spines; only two spinulous cushions on the 

 upper arch; pharyngeal teeth similar to those on the gill-rakers. 



Pectorals, soft dorsal, soft anal, margins of spinous dorsal, 

 spinous anal and caudal and to a less extent of the ventrals 

 hyaline; the hyaline of all but the soft dorsal, soft anal and 

 pectoral bordered by black; a dark line from above the upper 

 angle of the gill opening through the middle of the eye to the 

 maxillary, a similar line from the eye through the cheeks crossing 

 the breast half way between the ventrals and the gill opening, 

 another one extending straight back from the eye; a similar 

 dark line extending from the point of the opercle to the middle 

 of the caudal peduncle; area from the middle of the ventrals up 

 to the dorsal, and then forward below the line through the eye to 

 the mandible several shades lighter than the back or the area 

 behind this line. Slightly coppery color in living fish, this shade 

 lost in alcohol. 



