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PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXVII. 



ing- the chord of its curve from union of premaxillaries to front of 

 eye. Nasal, preorbital, and suborliitals, rough surface bones; the 

 nasals ending- in a prominent, wide, rather sharp spine. Preorbital 

 with 11 l)lunt spines on its lower edge; suborbital stay expanded on 

 cheek to a wide, long plate, but growing narrow and sharp behind. Pre- 

 opercle spine long, reaching a little past opercle flap, measured along- 

 lower edge from notch with spine lielow its length is 2^ in head; above 

 it is armed with 6 or 7 prominent irregular spines; preopercle below 

 armed with 3 spines; the lowest slightly the longest, the top one at 

 base of long spine and pointing straight back; the next pointing down- 

 ward and slighth' backward, its position midway between the others, 

 the lowest directed obliquely downward and forward. Opercle with 

 a prominent rough ridge ending behind in a blunt spine; subopercle 



Fig. 13.— Cek.\tocottus namiyei. 



with 2 small, sharp, slender spines; the upper one on a level with top 

 of pectoral, directed downward and backward; the lower one directed 

 downward. Superior postorbital part of head anteriorly depressed 

 below surface of interorbital region, leaving a transverse ridge 

 behind eyes; nape similarly depressed, leaving a transverse ridge at 

 0(^ciput; the depressed postorbital area bounded laterally by straight, 

 rough parietal ridges which end behind in rough, l)lunt, but very 

 prominent spines. Two small tentacles at under part of side of 

 mandible, and a similar one at symphysis; 3 at end of maxillary. A 

 patch of scattered, small, acute spines on the skin under pectoral, and 

 a lateral row of 32 bonj^ plates along side of back. 



Pectoral extending to opposite front of anal or a little past; its pos- 

 terior bordei" very broadly rounded; it has 19 ra3^s, the lower 10 or 

 11 swollen; its length is contained If in head. The distal fifth of 

 ventrals extends over the median point between their base and front 



