T 
154 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Table of measurements—Continued. 
Xyosternus, | Verrucosus, 
Santa Cruz. | Punta Reyes. 
| 
Head: 
amend oie boll Chagos Scqascoos coc sce OND bHOEOD ECB SoesosSaocerEodoS 6.5 1h 
Menethiofmandibler so sscessoce socesse veseccleceae=: samc eea=s==es== == 11 12 
Oey N GO Ae TON NE). 3 3- Se oo Se ascoKU cooNes some so Sse COD Sac ae eoE EEE renOs 3.6 2.5 
Diameter of orbit ..- ee oc cseepiceeocee i 6 
Hen othyonmaxd lary bar Dele cemcetae se sam eee meee nana aero mee ae 3.5 1 
Dorsal (spinous) : 
DIStancedtLomisnOublseseeseReeneeee ses see een ae aac eee cee ee eeee 31 , 29.5 
er sees Ne SU cae oa oe eee Sides ape meas ipraa asa gates ol al a ao Stocco re 
: SG LOLETICOLMeM PLANO. aaa anise elea en ellie alee 1 
Length of base ; COMMAS S PING kaa ceelsisisecer oats see seree eee eee 11 19 
Dorsal (soft): i Ab * dh 
r OLENG OL MEM PLANO ele oreo acim lele eles wissminimlelalmloleieimleyaleiniais 
Length of base § tonlast tary tees tee soe auc sc ke Pe Lee eee 10 13.5 
Hel Fhiomon est rayieceacnae sncaseeem beeen eases casa eeemeaee ae eseie 13 12 
Anal: 
Distance from snout Sete RTS ia Bad as ey oe 47.5 52 
i Pp topend Of MoM Prane re seciers tseeie cies siak a lesieis\ereisl=/ l= 2 
Length of base ; LOMASHDAY\ secs Soe sees soe Sasaiseee ve beso aonooesconewe. 16.5 24 
Heichtiofilon rest way... Ssise acc casccecncineecasesceoccisc sesscecceeeses 13 10 
C@audaltlenoth 255-6. stceenssecccccs cecseeewsececceconeteeeccce cose sews 19.5 16.5 
Rectoral Menoth! ese ca cecee shee Saree nme cob cioac one ne ce einnes chee neen ee 24 24.5 
Ventral: 
Distance from’ snoutietecesc- ese eves cence ch ebiowcwc cee see eeeececeoeeeses 24 28 
IE Creu Nees S a sacs ag aS OSCa DROBO deeb ap odaboDee ade ae Seno oebaaTenesecdaos 14.5 29.5 
MorsalbPays; cs cisco seeee secs sueee ce cet co eee ac ceecc ere eee et eon scones VL-6 IX-7 
PAU OVS = spices ele ajotaye ait oe Maine wie mic cGinisiee an meio acinc ete s wren Claman een uaneanee 8 11 
Rectovalirayses-..<see- cess Rene mc ee cee ee dene Son seer ere eeeeoeee eos 17 14 
WGiel eal aie his ee eS eee oe ee eS pe OO Oe Co eFor DoE OE SUSHESneeS 2 12 
Nim DeroLtobesanilateralllinesceeceesee test ree ne ease eee ee eee teen ae 34 37 
Number ofsplabessnidorsaliseriese sso csseeee cere eseeee ee ee reece neon eee 32 35 
‘Numberiot plates inilowerlateralserieses-sesseceeee eee pace tence eeeenee 29 35 
SANTA CRUZ, CAL., April 20, 1880. 
DESCRIPTION OF A NEW FLOUNDER (HIPPOGLOSSOIDES EXILES), 
FROM THE COAST OF CALIFORNIA. 
By DAVID S. JORDAN and CHARLES H. GILBERT. 
Hippoglossoides exilis sp. nov. 
Eyes and color on the right side. Body elongate, comparatively 
slender, rather closely compressed; 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- 
physeal knob. Maxillary rather narrow, its posterior end obliquely 
truncate, not extending quite to opposite the middle of the pupil. Pre- 
maxillary anteriorly on the level of the interorbital space. 
Teeth all conical, the upper jaw with two distinct series; outer series 
of teeth smaller than in the other species of Hippoglossoides, not large 
anteriorly, and becoming quite small posteriorly. Teeth of the inner 
series quite small, closely and evenly set. Lower jaw with a single 
