318 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 5«. 



wide. Eye supero-lateral, slightly advanced from center. Mouth 

 moderate, lower jaw well protruded. Maxillar}^ to eye center, 

 expansion Ih in eye. Teeth fine, in narrow bands in jaws; vomer 

 with small cluster of fine teeth each side. Interorbital concave, like- 

 wise cheek and cranium, coarsely rugose. Preorbital with 2 spines, 

 long hind one strong and directed back. Median strong preopercle 

 spine horizontal, with small point at base, another small point above 

 and four broad ones below; cheek buckles with small spine opposite 

 middle of eye; each parietal ridge with two broad spines, hind one 

 larger; postocular ridge ends in strong spine at suprascapula; pre- 

 ocular ridge with eight low even marginal denticles. Rakers 4 + 9, 

 lanceolate, equal filaments or 2^ in eye. First dorsal spine 3 in head; 

 least depth of caudal peduncle 3f ; caudal If; pectoral 1 J, filament 2; 

 ventral l^. Back brownish-drab in alcohol; lower surface white; 

 bony ridges of head pale brown; terminal edges of dorsals and anal, 

 most of pectoral and ventral black; bases of paired fins and anal 

 whitish; caudal avellaneous, with three broad dark crossbars. Length 

 90mm. 



Minous adamsi Richardson and 21. ecJtigonius Jordan and Starks, 

 the latter only from Japan, are very closely related and possibly are 

 really not distinct. 



Family COTTIDAE. 



TRACHIDERMIS FASCIATUS (Heckel). 



Head, 2|; depth, 4^; D. VIII, 19; A. 17; P. 10, 7; snout, 3^ in head; 

 eye, 9; maxillary, 2f ; interorbital, 3|; head width, If. Snout de- 

 pressed, broad, length f its width at front of eyes. Mouth broad, 

 lower jaw slightly included. Maxillary to hind pupil edge, expansion 

 equals eye. Teeth fine, in bands in jaws, on vomer and palatines. 

 Interorbital slightly concave. Lower preopercle edge with 4 broad 

 short spines, terminal or angular hooked upward. Rakers 9 very 

 short rudiments on lower arch. Skin on head finely wrinkled and 

 papillose; in trunk finely asperous, though prickles not extending on 

 under surface. Lateral line with 38 small pores. Third dorsal spine 

 4 in head; seventh dorsal ray 2§; seventh anal ray 3; caudal 2; pec- 

 toral If; ventral 2§; least depth of caudal peduncle 5|. In alcohol 

 general color light bufi", back and upper surfaces with obscure and very 

 pale traces of brownish mottling; similar traces of pale brownish dots 

 on pectoral and caudal fins basally. 



Family GOBIIDAE. 

 Subfamily Eleotrinae. 



MICROPERCOPS, new genus. 



Allied with Evi.ota Jenkins and Trimma Jordan and Seale, in its 

 naked sides of the head and unarmed preopercle. It agrees with 

 Tnmma with the fully scaled nuchal region, in which respect it dif- 



