ELEOTKIS. 



Fam. 11. GOIUID.E. 



Mouth protractile, the maxillaries excluded from the oral border. 

 Lower pliaryiigeal bones separate. Two nostrils on each side. Sub- 

 orbital arch ligamentous or absent. Gill-membranes more or less 

 broadly attached to isthmus. Scapula and coracoid more or less 

 reduced or even vestigial ; pterygials large, 4 or 5 in number, forming 

 together a thin plate which is in contact with or narrowly separated 

 from the clavicle ; one or two of the pterygials in contact witli the 

 coracoid. Ventral fins tlioracic, with a feeble spine and -1 or 5 branched 

 rays, often united to form a sucking disk. Anterior part of dorsal iiu 

 composed of slender, flexible, non-articulated, simple rays. No lateral 

 line. A more or less developed anal papilla, larger in the males. All 

 or most of the praecaudal vertebnc with transverse processes bearing the 

 ribs. Air-bladder often absent. 



Cosmopolitan. Mostly marine or occurring in botli salt and fresh 

 water. 



Si/)ioj).'</s of the (jenera. 



I. V('iitr;il fins ilistinrt ; two dor-iil tins . . 1. /■^U'olfis, Gron., p. 7. 



ir. N'cntrals united into a disk, wliiidi is not adliorcnt to the hellv. 



Tui) diirsal tins : no harljels 2. Gobius, Art., p. 22. 



Two dorsal fins; a pair of nasal and a pair of 



mental i)arl)els ii. Nematogohius, BIgr., p. 10. 



A sinol(> dorsal fin 4. Gohioides, Lacep.. )i. 41. 



JII. Ventials miitcd into a disk, which is more or less adherent to the hidiy ; 

 two dorsal fins. 

 r?ody scaly; niovahlc, slender teeth on the lips . 5. Sici/dinm, C. & V., p. 42. 

 Botlv naked, or with the posterior part staly ; 



jaws with a single series of fixed teeth . . 0. Lciiliju's, Gthr., p. 40. 



1. ELEOTRIS. 



(ironov. Mas. lehthyol. p. H! (1704), part. ; Cnv. & Val. Hist. Pois.';. xii. p. 217 

 (liS;57) ; Ciiinth. Cat. Fish. iii. p. 1(1') (l.siW): Boiileng. Fish. Nile, ji. .^37 

 (1907). 



CuUus, Bleek. Nat. Tijdschr. Nederl. Ind. xi. l^rni. p. 411. 



Jiatts, Bleek. t. e. i>. 412. 



Ophiocam (Gill), Bleek. Areh. Xeerl. ix. 1874, p. 303. 



Teeth small, conical, with or without curved canines. Two dorsal 

 fins, the anterior with 5 to 8 flexible spines, the posterior with one 



