JOi l!KCOI!|)S OK 111K AISIICAI.IAX MlSKl!M. 



bb. Huad without such rid-^es Tueiiioides, sj). 



ltd. Soft dorsal and anal shorter, free from the caudal. 



c. liody naked, coin])ressed and elevated Gobiodon, spp. 



re Body aealy. 



il. Ciiin and iiiandilile witli harbles, checks and oi)erck'S scaly 



I'urachaelunchthys, sp. 



dd. Chin and mandible without barbies 



e. First dorsal with 7-8 spines (Gobins) pictus. 



ce. First dorsal with 6 spines. 



/. Head witli very prominent raised i)a))illose ridj^es Callogubius, sp. 



/. Head with only microscoi)ic pajiilhc in rows. 



ij. Opercles scaly, cheeks naked or scaly. 



h. Cheek scjiles lar;^e and distinct Erijiias, sp. 



hh. Cheek scales indistinct or wanting;. 



i. Forty or more scales in a longitudinal row Mnjiloijobins derisi. 



It. Less tljan forty sciiles in a lonyitudiual row. 



j. Head suV>cylindrical posteriorly, about as broad as deeji. 



k. Scales of nape and operculum small MmjilnijohiHS ijalwayi. 



kk-. Scales of nape an<l i>j>erculum enlarj^ed ...(Gobius) jiaveseens. 



jj. Head comjjressed, deei)er than Inoad (G<'bins) ansltalis. 



ij<j. Opercles naked or nearly naked, cheeks naked. 



L Exposed edjjje of 8houlder-<^irdle with fleshy lol^es luaoits, gp. 



il. E.xpo.sed ediife of shoulder-i^irdle suu)oth. 



m. Upper pectoral rays free and .silk-like. 



II. ToHfjue trunciite or rounded anteriorly Gobius, sp. 



nil. T«>n'„'ue emarjjinate anteriorly Jf 11710, spj). 



iiKii. Upper i)ectoral rays not free nor dilTerentiated from tiie otliers. 



0. Tonj^ue deei)ly n<>tclied anteriorly Glnssngobins, sj)}). 



00. Tonjjue not deeply notched. 



p. Head subspherical, with spines or larj^e papilla* I'muijobioditn, sjt. 



I'll. Head lonj^er, without spines or lar^e papilhe. 



7. Scales larjjfer, 36 or less in a lontjitudinal row. 



r. Nape and ;jjreater |)ortion of neck naked. 



.1. (.iill-openint,'s extending well forward l>elow. Hflli ventral ray .slmrter 

 than tlie fourth Zoungobins, t^y). 



is. (Jill-openings Hot extending forward below, fifth ventral ray as long 

 as the foi^rth. 



/. Kreast and pectoral base naked (Gobius) lidwilli. 



tt. Hreast and pectoral base scaly. 



It. Caudal pointed, Imdy longer (Gobius) bifi-eiuilus and 



( Gnhius) seniij'fcnalHS. 



nil. Caudal rounded, body shorter Ithiiiotjobins, sjip. 



ri-. Nape and iwck scaly. 



V. Snout pointed, maxilla extending to l>elow the orbital border 



* (Gobius) neophylus. 



vv. Snout obtuse, maxilla extending beyond the orbital border 



(Gobius) lateralis. 



