270 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXV. 



lO. RUDARIUS Jordan and Fowler. 

 Rudarius Jordan and Fowlek, new genus (errodes). 

 This genus has the immovable ventral spine of Pseudomonacanthus, 

 with a short deep l^ody. approaching that of Brachaluteres. 

 {rudis, rough). 



14. RUDARIUS ERCODES Jordan and Fowler, new species. 

 Pseudomonacanthm tnichydcnna Jordan and 8nyder, Check list, 1901, p. 93; 

 Yokohama (not of Bleeker). 

 Head 3 to 3f ; depth li to H; D. I. 25 or 26; A. 24 or 25. Body 

 short, deep and compressed; rather rough; the caudle peduncle some- 



Rius ?:rcodes. 



times with many slender curved spines. Head deep, its length about 

 two-thirds its depth; eye rather large, superior, If in snout, 2| m 

 head, equal to space between its lower margin and lower margin of gill 

 opening; equal to caudal peduncle; interorbital space convex, greater 

 than eye; upper profile concave; teeth emarginate, those in the lower 

 jaw the larger; gill opening small, with narrow lieshy flap; lips mod- 

 erately thick; jaws equal; spinous dorsal over posterior part of eye, 

 convex, roughened in front; a single series of antrorse spines on each 

 side, and its base midway or a little nearer the tip of the snout than 

 the origin of the soft dorsal; soft dorsal and anal of nearly equal 

 height; the origin of the latter a little in advance or under the origin 

 of The former; caudal rounded; ventral spine short and rigid; pectoral 

 equal or longer than the least depth of the caudal peduncle. 



