154 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 

 TaMe of measurements — Continued. 



Head: 



Length of maxillary 



Leiiutli i)t' mandible 



Depth of iiiaiuliblo 



Diaiiu-U'i- of orbit 



Length of maxillary barbel 

 Dorsal (sinnons) : 



Distance from snout 



Greatest liei<;bt . 



T +1, „f i^„„.^ S to end of membrane 



Lensth of base ^^ ^,^^^ ^ . ^ 



Dorsal (soft) ■■ 



Lengtbofbasejl--^ 



to end of membrane. 



ray 



Lenstb of base 



se ^ *" ' 



*'- \ to : 



Heigbt of luni;cst ray , 

 Anal: 



Distance from snout 



to end of membrane, 

 i last ray 



Hei.t';ht of longest ray 



Caudal, leniTth ". 



Pectoral, lengtb 



Ventral : 



Distance from snout 



Lengtb 



Dorsal rays *. 



Anal ravs 



Pectoral lays 



Ventral rays 



iXumber of tul'i's in lateral line 



Number of jilaN s In dorsal series 



Number of plates in lower lateral series . . . 



Xyostcrnus, 

 Santa Cruz. 



Verrucosus, 

 Panta Keyes. 



7.5 

 12 

 2.5 

 6 

 1 



25.5 



13.5 

 12 



52 



24 

 10 

 1G.5 

 24.5 



28 

 29.5 

 IX-7 

 11 

 14 

 1,2 

 37 

 35 

 35 



Santa Cruz, Cal., April 20, 1880. 



DESCKIPTBOIV OF A IVETT FliOlJIVRER (HIPPOCJliOi^SOIDES EXII.IS), 

 FBOITI THE COAST OF CALSFOKMA. 



By B>AVIB> S. JOKDAN and CIIARI.ES SI. GILJSEKT. 



Hippoglos3oides exilis sp. nov. 



Eyes and color on the right side. Body elong-ate, comparatively 

 slender, rather closely comiiressed ; the dorsal outline more curved than 

 the ventral, and neither strongly arched; the body tapering backwards 

 into a slender caudal peduncle, which is considerably longer than deep. 

 Greatest depth about one-third the length to base of caudle. 



Head moderate, not obtuse, the outline of the snout continuous with 

 the descending profile of the back. Mouth not large, very oblique, the 

 upper jaw with its margin on each side concave, the lower jaw correspond- 

 ingly convex. Lower jaw slightly protruding, with a distinct sym- 

 l^hyseal knob. Maxillary rather narrow, its posterior end obliquely 

 truncate, not extending quite to opposite the middla of the pupil. Pre- 

 maxillary anteriorly on the level of the interorbital space. 



Teeth all conical, the upper jaw with tvvo distinct series; outer series 

 of teeth smaller than in the other siiecies of Hippoglossoides^ not large 

 anteriorly, and becoming quite small posteriorly. Teeth of the inner 

 series quite small, closel}' and evenly set. Lower jaw with a single 



