204 UKCORDS OF THE AUSTKALIAX ML'SEUM. 



66. Head without such ridges Taenioides, s}). 



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



c. iJody naked, compressed and elevated Gobiodon, spp. 



cc. Body scaly. 



d. Chin and mandible with barbies, cheeks and oi)ercles scaly 



J' a rachactu nclith ys, sp. 



dd. Chin and mandible without barbies. 



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



ee. First dorsal with 6 spines. 



/. Head with very prominent raised pai)illo.se ridges Callogubius, sp. 



ff. Head with only microscopic paijillse in rows. 



g. Opercles scaly, cheeks naked or scaly. 



h. Cheek scales large and distinct Exyrias, sp. 



hh. Cheek scales indistinct or wanting. 



i. Fox'ty or more scales in a longitudinal row Miujilogobins devisi. 



li. Less than forty scales in a longitudinal row. 



j. Head subcylindrical posteriorly, about as broad as deep. 



k. Scales of nape and operculum small Mngilogobins gahcayi. 



kk. Scales of nape and operculum enlarged ...(Gobius) Jlavescens. 



jj. Head compressed, deeper than broad (Gobius) uaslnilis. 



gg. Opercles naked or nearly naked, cheeks naked. 



I. Exposed edge of shoulder-girdle with fleshy lobes Awaons, sp. 



II. Exjiosed edge of shoulder-girdle smooth. 

 ni. Upper pectoral rays free and silk-like. 



li. Tongue truncate or rounded anteriorly Gobius, sp. 



nn. Tongue emarginate anteriorly Mapo, spp. 



mm. Upper pectoral rays not free nor differentiated from the otlieis. 



o. Tongue deeply notched antei-iorly Glossogobitis, spp. 



00. Tongue not deeply notched. 



p. Head subspherical, with spines or large papilhe Paragobiodon, sp. 



pp. Head longer, without spines or large papilla?. 



q. Scales larger, 36 or less in a longitudinal row. 



/•. Nape and greater portion of neck naked. 



.s. Gill-openings extending well forward below, fifth ventral ray shorter 

 than the fourth Zonogobius, sp. 



ss. Gill-openings not extending forward below, fifth ventral ray as long 

 as the fourth. 



(. Breast and pectoral base naked (Gobius) lidwilli. 



tt. Breast and pectoral base scaly. 



(i. Caudal pointed, body longer (Gobius) bifi-cunlus and 



(Gobius) scmi/i'cnitlus. 



uu. Caudal rounded, body .slmrter ■ ...Ilhiuogobius, spp. 



IT. Nape and neck scaly. 



V. Snout pointed, maxilla extending to below the orbital border 



(Gobius) ueophytus. 



vv. Snout obtuse, maxilla extending Ix-yond the orbital border 



(Gobius) lateralis. 



