382 BULLETIN OF THE BUREAU OF FISHERIES. 



u. Scales large, ctenoid; dorsal and anal fins short. 

 b. Tongue truncate or rounded at tip; isthmus rather tinmd; li.wer jaw usually not strongly projecting, 

 c. Pectoral without silk-like rays above. 



rf. Preopercle with 2 small hooked spines at angle; dorsal spine rigid OPLopoMfs 



dd. Preopercle unarmed; shoulder-girdle without fleshy slips; dorsal spines slender. 



e. Dorsal spines 7 A bom .\ 



ee. Dorsal spines 6. 



/. Head almost spherical: body short and plump; small canines present Parakobiodon 



//. Head not spherical. 



g. Body before dor,sal flu largely naked; head^very large; mouth subvertical Zonogobh's 



(jg. Body before dorsal chiefly scaled. 



h. Ventrals short, cup-like; body elongate; head depressed; small canines present Vaii.t.ma 



hh. Ventrals well developed. 



i. Head very large, with cross-linos of minute cirri (as in Gobiomorphm unA in Mars) Dro.mbis 



ii. Head without cross-lines of tubes or cirri Rhinogobrs 



CI). Pectoral fin with several free silk-ltke rays above OoBirs 



hb. Tongue emarginate at tip, 



./. Pectoral witli free silk-like rays; dor.sttl spines, 6; mouth moderate Mapo 



Jj. Pectoral without free silk-like rays above; mouth large, oblique, the eh:n very prominent Glossogobus 



an. Scales 36 or more; pectoral without .silk-like rays. 



/;. Tongue emarginate; lower jaw projecting; mouth large Ch«nogobiis 



kk. Tongue entire (so far as known). 

 /. Shoulder-girdle with fleshy slips or flaps; dorsal and anal short, of about 11 or 12 rays; scales moderate, ctenoid; 

 preorbital region broad; tongue adnate to floor of mouth: fresh- water species. 



(/. SImiiiI.Iit -ii.lli >■. ii I ■. ii- '!.i|.., .l..r-;inni(l .-inal long (15 to 20 rays). 



,/ -nil-- in. 1^ III Ill I l<i\Mr jaw with small canines .\mblyoobiis 



:n - INI , I -III ;i.. I'liii.-: jaws not opening widely Cryptocentrvs 



,11. r ! -iiji' 11,111 I,' 'ii . Ill 111 finarginate; mouth small; dorsal spines .seven Vitraria 



:A'- I ■ ii'i ■ , :,ii . i:,i . -i.i Ii ■! ■:. I, |n. i.ii i'l ,t: no barbels at chin. 



p. Jloufh very large, the maxillary produced backward somewhat as in Opisthognalhus Waitea 



;i;). Mduth moderate; no canines; soft dorsal and anal moderate, of 12 to 20 rays. 



<i. Ont'-r tfi-fh iiiorl,.rHtp]v enlarged; upper pectoral rays silk-like Gobiichthys 



ij,/. Out. I 1 1 I III .. 111. i i.ii^ and movable; lower jaws flat and thin; no silk-like rays Gobioxei-ixs 



irir. Teeth at i un i ■ 1 1 i i mi n,i present: soft caudal more or less pointed. 



r. Scales rat 111 1 lai'^f J - hi :; h: soft dorsal and anal short Gobiopteri'S 



rr. Scales moderate i4u to .^ui; soft dorsal and anal of about 23 rays Apocryptodon 



rrr. Scales very minute, about 2t)0; soft dor.sal and anal of about 30 rays r;^ErDATPocRYPTEs 



IT. Vomer with about 3 large blunt teeth; head with numerous lines of small cirri running in various directions 



scales rather small; fins moderate Mars 



UU. Body naked or very nearly so. 

 s. Body rather elongate, not greatly compressed. 



(. Dorsal spines 6; snout very blunt; soft dorsal longer than anal Kjci.i.cKRiEi.i.A 



ss. Body greatly compressed and elevated. 



u. Canines present, small t Gobiodon 



ua. Canines wanting Pseudogobiodon 



tt. Ventral flns short, round, cup-shaped, adnate to the belly; outer teeth more or less flexible, peculiarly formed. 



r. Body ^.alv ..rrhicHvsr.. 



w.^Tvrti' -■' 1...I |.,.iiited. 



a-. Si . M . I ,, Mii; body well scaled SicYopTERfS 



JJ-, .-.. ,1. - laiL. I (0; trunk partly naked anteriorly MirRosicYDiuM 



naked; upper front teeth tricuspid Lentipes 



nal very long, joined to the caudal; body eel-shaped, the scales minute or wanting 

 no pit above opercle; eyes minute; teeth very long, curved; dorsal moderate, its rays about vr, 16 Gobioides 



BOSTRYCHTTF Lac^pfede. 



Elriitricis with vomerine teeth, as in the American genus Phili/pm/s. 



1397. Bostrychus sinensis Lac'^pede. Oualan; Kanathia, Fiji; East Indies; China. 



VALENCIENNEA Bleeker. 



1398. Valenciennea muralis Qiiov & (iainiard. Tiiinpia, Vunicoln; Fiji: East Indies; Australia. 



1399. "Valenciennea long-ipinnis Lay A Bennett. Fiji ((iiinther), Kiukiu Is. 



Eleotris hiii(iiiiiniiis Lay A lienuett, Zonl. Beeehey's Voyage, (>4, tab. 20. fig. 30. Riukiu Is. Giinther. Fiselie der 



