1. O0B1TJ3. 3 



Ventral fins close together, but^mote or less comipletcly disconnected. 



Eye8 very close together and very prominent. 



Teeth erect in both jaws 12. Periophthalmus, p. 90. 



Byes very close together and very prominent. 



Lateral teeth of the lower jaw horizontal 13. Boleophtiialmus, p. 101 



Eyes not prominent ; anal papilla distinct 14. Eleotris, p. 105. 



Head and body compressed; anal papilla ab- 

 sent 15. ASTERROPTERY.X, p. 132. 



Second Oroup: Amlilyopiiia. 

 Anterior teeth very strong Ifi. AmblYopus, p. 133. 



Third Group : Trypauchenina. 



Ventrals united into one disk 17. Tr^pauchen, p. 137. 



Ventrals completely disconnected 18. Trvpauchenichthys, p. 137. 



Fourth Oroup : CaUionjrmina. . 



Gill-openings of moderate width ; praeopercu- 



lum not armed 19. Platyptbba, p. 138. 



Gill -openings reduced to a small opening ; pree- 



operculum armed. None of the ventral rays 



detached 20. Callionv.mus, p>138. 



The outer ventral ray detached . 21. Vclsus, p. 151. 



A^pendiiJc. 



Ventral fins united. One short dorsal fin. Body 

 naked Luciogobius, p. 152. 



VQntral fins separated, 1/4. Two dorsal fins; 



head compressed into a fleshy crest Oxymbtopon, p. 153. 



First Oroup. GOBIINA. 



Ventral fins united into one disk, or situated close together ; two 

 separate dorsal fins. Vertebrae J^||. 



1. GOBIUS*. 



Gobius, Artedi, Genera, p. 28. 



Gobius, sp., Cui\ Regne Anim. 



Chaeturicnthys, Richards. Voy. Sulph, Fishes, lo. 54. 



Gobionellus, Girard in Proc. Acad. Nat. Sc. Philad. 1858, p. 168. 



Oxyurichthys, Bleek. Enumcr. Spec. p. 120. 



* a. Doubtful species apparently allied to G. niger, G.- paganellus, or G. capito. 



1. Gobius gottatus, Cuv. 4' Vol. xii. p. 24; Guiclien. Explor. Alger. Poiss. 



p. 76. — Mediterranean. 



2. limbatus, Cuv. # Val. xii. p. 26. pi. 344.— Nice. 3. 



B 2 



