1867.] DR. A. GUNTHER ON NEW FISHES. 101 



the upper profile of the head; its diameter is contained five times and 

 one-third in the length of the head, and equal to the distance he- 

 tween the eyes ; forehead between the eyes convex. The other parts 

 of the head are thickly covered with small scales. Praeoperculum 

 with the posterior margin finely serrated, and with from two to five 

 larger teeth on the lower limb. ' Operculum with two flat prominent 

 spines, the lower being smaller. 



Dorsal fin rather elevated, no notch before the soft portion. Ver- 

 tical fias covered with minute scales at their base and basal half. 

 The first dorsal spine is above the base of the longest spine of the 

 operculum, and is not quite one-half the length of the last spine ; 

 the second is rather more than twice as long as the first ; the third 

 and fourth are the longest, nearly half as long as the head ; mem- 

 brane between the spines very deeply notched : the length of the 

 base of the soft portion is two-thirds of that of the spinous ; it is 

 slightly, if at all, inferior to the spinous portion in height, and has 

 the upper margin convex. Distance between dorsal and caudal fins 

 equal to the depth of the free portion of the tail. Caudal truncated, 

 one-sixth of the total length. 



The first anal spine is short, less than half the length of the 

 second ; the second is of moderate thickness, the third is the long- 

 est, much shorter than the first ray, and not quite one-third of the 

 length of the head ; the soft portion is rounded, and its distance 

 from the commencement of the caudal is one-half of the depth of the 

 body. Pectoral well developed, rounded, reaching to the level of the 

 vent, its length being contained five times and one-half in the total ; 

 its base has very minute scales. Ventrals as long as or longer than 

 the pectorals, inserted below the base of the pectorals ; their spine 

 is three-fifths of their entire length. 



Teeth rather coarse, cardiform ; a pair of canines in the front of 

 both jaws ; palatine teeth in narrow bands ; vomerine teeth in a tri- 

 angular patch. 



Coloration as in the specimen figured by Schlegel. 



XiFHOCHiLus FAsciATUs. (Plate X.) 



D. ^. A. ^. L. lat. 29. L. transv. 4/10. 



The height of the body is one-third of the total length, the length 

 of the head nearly one-fourth. Head rather longer than high, com- 

 pressed, the width of the interorbital space (which is flat) being equal 

 to the diameter of the eye. Eye immediately below the upper pro- 

 file, in the middle of the length of the head. Anterior and posterior 

 canine teeth greenish blue. Scales on the cheek in six series. Oper- 

 cular membrane of moderate extent. Pectoral fin without a notch 

 behind, nearly as long as the head, extending to the vent. Caudal 

 fin truncated. The ground-colour of the head and upper part of 

 the trunk appears to have been reddish orange, of the hinder and 

 lower parts greenish. Head and body with bluish-ashy cross bands, 

 each edged with violet. Three such bands across the upperside of 

 the head, two being narrow and in front of the eves, the third broad 



