PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 73 

 Measurements. 



Exti-crao leDsth, in inches 



Length to base of caudal = 100 . 

 Hody: 



Greatest depth 



Least depth of tail 



Head: 



Length 



Lenjith of snout 



Diameter of eye 



Width of intexorbital area . 



Occipital spine 



Supraocular spine 



Least width of preorbital . . 



Maxillary 



Longest gill-raker 



Dorsal : 



Highest (fifth) spine 



Longest soft ray 



Anal : 



Lengtli of base 



Second spine 



Third spine 



Longest ray 



Caudal, "middle' ray 



Pectoral : 



Width of base 



Length 



Ventral, length 



Dorsal rays 



Anal rays 



Scales in lateral line 



I>ES€RaS*TIO]V OF A TSEW SPECIES OF " ROCK-FISBI" (SEBASTI€H- 

 THYS CAKIVATUS), FKOM THE COAST OF CA1.IFOKIVIA. 



By BAVHD S. JORDAN and CHARLES H. GII^BERT. 



Sebastichthys carnatus sp. nov. 



Allied to Sebastichthys nebulosus Ayres. 



Body rather short and deep, tapering* rapidly to a rather slender 

 caudal peduncle. Head short, bluntish, the profile straight and steep. 

 Mouth low and rather short, the maxillary extending to rather behind 

 the posterior edge of the eye, which is rather small and elevated. Pre- 

 maxillary entirely below the level of the eye, which is rather small and 

 elevated. Mouth nearly horizontal, the jaws about equal, the lower jaw 

 slightly shortest in the closed mouth. No prominent symphyseal knob. 



Scales on the head rather rougher than in 8. nebulosus; the lower jaw, 

 maxillary, space in front of eye, and nasal region naked, as in nebu- 

 losus. 



Top of head with the spinous ridges well developed, but somewhat 

 lower than in S. nebulosus; otherwise very similar. The following pairs 

 are present: Nasal, preocular, supraocular, tympanic, and occipital, five 

 in all. The occipital spines especially are lower and narrower than in 

 nebulosus. 



Preopercular spines small and bluntish, the uppermost rather broader 

 than the second, which is the longest. Opercular and suprascapular 

 spines two each, rather short and broad. A slight spine on interopercle 

 and subopercle. 



