MUSEUM OF COMPARATIVE ZOOLOGY. 211 



Its anterior margin is strongly serrated, while those of the second and third 

 spines are less markedly so. The length of base of first dorsal equals the 

 greatest height of body : the distance between its insertion and that of the 

 second dorsal fin is equal to the length of the longest and superior detached 

 pectoral ray. The second dorsal fin is inserted in the perpendicular over the 

 interspace between the second and third anal rays : the length of its longest 

 ray equals twice the least height of tail, and the length of its base equals the-. 

 greatest length of the ventral rays. Its first ray is conspicuously serrated on 

 its anterior edge. 



The insertion of the anal fin is in the perpendicular below the end of the 

 first dorsal fin : the length of its longest ray is equal to half that of the middle 

 caudal rays. 



The caudal is truncated, very slightly emarginate. 



The pectoral is very peculiar in structure, its longest ray, the 9th, reaching 

 to the base of the caudal rays, and equal in length to four times that of the 

 fourth dorsal spine. The 10th ray is a little bit shorter, extending nearly to 

 the end of the soft dorsal. The 11th, 12th, and 13th rays are graduated, de- 

 creasing in regular proportion, the 13th being less than one fourth as long as 

 the 10th. The 8th is about midway between the 10th and 11th : the 1st is 

 slightly longer than the 12th, and those intermediate between the 1st and the 

 8th are graduated in length, so as to form a rounded outline for the anterior, 

 or upper, portion of the fin. The pectoral appendages are slender, the third 

 being slightly greater in length than the 13th ray, being two thirds as long as 

 the first, while the second is intermediate between the other two. 



The ventral is inserted directly under the base of the pectoral appendages : 

 its first spine about equal in length to the preopercular spine from the base of 

 the supplemental spines ; its longest, the third and fourth, exactly equal in 

 length to the base of the second dorsal. 



Color, brownish above, with about four indistinct transverse band-like 

 blotches, one of which is on the base of the caudal ; whitish beneath. Verti- 

 cal fins 'uniform, the tips of the caudal rays blackish, with two indistinct 

 cloud-like bands in advance of the terminal band thus formed. A black blotch, 

 with whitish anterior margin on the membrane between the fourth and fifth 

 dorsal spines ; a very inconspicuous blackish spot on the membrane between 

 the fifth and sixth ; others still less conspicuous on the succeeding interspaces. 

 The pectoral blotched and clouded with blackish brown and white. 



Radial formula: D. X, 12; A. 11; C. 3 — 7 + 5 — 4; P. 13 + 3; 

 V. I, 5. 



L. lat. about 100. Tube-bearing scales, about 50. 



