78 PROCEEDINGS OF THE ACADEMY OP [1885. 



Habitat. — Florida Keys to Cuba ; strictly marine, not ascending 

 rivers. 



This species is rather abundant on the coast of Cuba. A single 

 specimen was obtained by Professor Jordan at Key West. It 

 reaches a length of about a foot. It is confounded by Cuban 

 fishermen with the Esmeralda (Gobionellus), although it lacks 

 the emerald-colored prominences on the tongue. From this con- 

 fusion the not appropriate name of smaragdus has come to be 

 given to this species. This Poey has proposed to change to 

 Valenciennesi ; but this change the law of priority forbids. 



6. GYMNELEOTRIS. 



Gymneleotris Bleeker, Esquisse d'un Syst. Nat. des Gobioides, 304, 1874 



(seminuda). 



The distinguishing mark of this genus seems to be the absence 

 of scales on the head and anterior part of the trunk. Nothing 

 is known either of the genus or of its single species, except 

 what is contained in Giinther's description of the latter. 



Analysis of the Species of Gymneleotris. 



a. Head and trunk naked ; tail covered with small scales ; head 

 f of total length ; maxillary extending >to below anterior 

 margin of orbit. Teeth in upper jaw in a narrow band ; the 

 lower has four somewhat larger and recurved teeth in 

 front ; palate toothless. Fin-rays not prolonged. Pectorals 

 not quite extending to origin of second dorsal. Ventrals 

 much shorter than pectoral. D. VII, 11 ; A. 9. 



Seminuda. 13. 



13. Gymneleotris seminuda. 



Eleotris seminuda, Giinther, Proc. Zoological Soc, London, 18C4, 24, 

 "Plate iv, f. 2, 2 a" (Pacific Coast of "Panama) ; Giinther, Fish. 

 Central America, 441, 1869. 

 Gymneleotris seminuda Bleeker, Esquisse d'un Systema Nat. Gobi- 

 oides, 304, 1874. 



This species is known from the description by Dr. Giinther of 

 a small specimen in the British Museum. 



