PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 165 



is contained 3^ times in its length to the origin of the middle caudat 

 rays, and equals twice the length of the maxilla. The least height oi 

 the tail equals the length of the caudal peduncle, and is contained 2f- 

 times in the greatest body height. The length of the head equals twice- 

 the length of the anal base, and is contained 2f times in the standard 

 length, which is the total length to caudal base. The lower jaw pro- 

 jects beyond the upper a distance equal to one-fourth the length of the 

 snout. The length of the snout is nearly one-fourth that of the head^ 

 and is about twice the length of the eye, which is contained 7i times ia 

 the length of the head measured to the tip of the opercnlar flap. The* 

 maxilla extends behind the vertical through the i)osterior margin of the 

 eye and is two-fifths of the length of the head. The distarce of the eye 

 from the upper profile of the head is less than one-half the vertical 

 diameter of the eye. The preopercle has a very indistinct notch behind^ 

 the denticulations are almost obsolete except at the angle, where there- 

 are a few small ones. The lower jaw has two rows of teeth, the outer 

 row of strong, fixed, curved teeth ; the inner row of longer, more widely- 

 separated, depressible teeth ; two canine-like teeth near the symi^hysis., 

 The outer row in the upper jaw is similar to that in the lower jaw ; behind: 

 it is a band of closely-placed, smaller, villiform teeth; on each side of 

 the symphysis is a patch of depressible teeth, and in advance of these 

 patches are two moderate canines on the left side and one on the rightr. 

 side. The vomerine and palatine teeth are in villiform bands. The^ 

 maxilla is scaled on its upper portion. There are also rudimentary 

 scales at the mandibular symphysis. The gill-rakers are strong, with> 

 their inner margins spinous. There are three developed gill-rakers above- 

 and nine below the angle of the anterior arch, besides a few rudimentary 

 ones both above and below. The longest gill-raker is about two-thirds 

 of the longest diameter of the eye. 



The distance of the dorsal origin from the snout is equal to that of the 

 ventral origin from the snout. The length of the base of the spinous^ 

 portion is equal to that of the soft portion. The first dorsal spine is- 

 one-half the length of the third spine; the fourth spine is the longest^, 

 and equal to one-third the length of the head without the opercular flap.. 



The distance of the anal fin from the snout is equal to twice the great- 

 est height of the body. The length of the anal base is about one-half 

 the length of the head, and slightly greater than the length of the- 

 pectoral. The first anal spine is one-half as long as the eye and two- 

 fifths of the length of the second spine, which is not quite two-thirds as- 

 loug as the third. The length of the third spine is about one-half that 

 of the ventral. 



The length of the pectoral is one-half the length of the head to the- 

 end of the opercular spine. The distance of the ventral from the snout 

 is twice the length of the pectoral, and the length of the ventral is equal 

 to the length of the head without the postorbital portion; it is also equal 

 to that of the upper jaw. The vent is midway between the tip of the 



