514 



PROCEEDINGS OF THE ACADEMY OF 



[July, 



caudal, antl about 4 more on latter; about 23 scales in a transverse 

 series from origin of soft dorsal to base of anal; width of head 14 in 

 its length; depth of head 1^; snout 3|; eye 3f ; width of mouth 2i; 

 first dorsal spine Ij: first dorsal ray about 2^; last anal ray al)out 3^; 

 caudal (damaged) 1^; pectoral, to scaly l:)ase, al:)out H; length of ven- 

 tral nearly 2; least depth of caudal peduncle 3. 



Body elongate, somewhat compressed, tapering to caudal so that 

 greatest depth exclusive of head is just behind it. Profiles even and 

 similar. Caudal peduncle rather long, its least depth a trifle over half 

 its length. 



Head robust, a little ol^long, widest below, upper surface little con- 

 stricted, but little deeper posteriorly, and anterior profile stee]^. Snout 

 broader than long, and with both anterior profile and surface convex. 



Fig. 14. — Periophthahnus argentilineatus ^'alenc•iennes. 



Eye high, large, a little longer than deep and anterior. Moutli broad, 

 with large j aws , and lower a little inferior. Lips fleshy. Inroad , and form- 

 ing a broad fold at each corner of mo\ith. Teeth large, about 20? in 

 each jaw% conic, pointed, and uniserial. Roof of mouth and tongue 

 ap])arently smooth. Tongue large, thick, rounded and not free. Nos- 

 trils well separated, on each side of snout just below front margin of 

 e3^e. Interorbital space hardly defined, eyes approximated. 



Gill-opening lateral, its length about 3f in head. Gill-rakers a few 

 small weak fleshy processes. First arch with lower anterior part more 

 or less adnate to pharynx In' menibrane. Gill-filaments rather short. 

 Isthmus broad . 



Scales small, jjresent on occi])ut or on top of head behind eyes, and 

 on sides of head. In these regions and on back about spinous dorsal, 

 and also on belly and chest they are small or crowded. On posterior 



