4 8 MARINE AND FRESHWATER FISHES 



hitherto described. In form and general details it most 

 closely resembles the Two-spotted Goby (Gobius Ruthen- 

 sparri), No. 59, and, like it, has a dark spot or ocellus on 

 each side, both at the base of the tail and near the axilla of 

 the pectoral fin. The proportions of all the fins are, how- 

 ever, much larger, and the second dorsal and anal ones in 

 particular have their hinder rays so much prolonged as to 

 reach nearly to the base of the tail. In life the two long 

 dorsal fins have each three narrow, sub-parallel, bright 

 crimson longitudinal bands on a pale blue ground ; about 

 fourteen or fifteen conspicuous bright emerald-green spots 

 are developed at somewhat irregular distances along the 

 lateral line, the remaining surface of the body being 

 variegated with various shades of brown, grey, and yellow. 

 Possibly this form is identical with Couch's (Gobius 

 bi-ocellatus), which Dr. Day, " British Fishes," proposes to 

 unite with G. rutliensparri, but it is certainly distinct from 

 the type specimens of the last-named form contained in the 

 Day Collection, and the colouration, here described from 

 living examples, though possibly assumed only at the breed- 

 ing season, has not been recorded of any other species. The 

 remaining British members of the Goby family are the One- 

 spotted Goby {Gobius minutus), No. 60 ; the Speckled Goby 

 (G. pamel/i), No. 61 ; the Painted Goby (G. pictus), No. 62 ; 

 the Four-spotted Goby (G. quadrimaculatus), No. 63 ; the 

 Transparent Goby (Aphia pelhicida), No. 64; and Nilsson's 

 Goby (Crystallogobius Ni/ssonii), No. 65. 



FAMILY XVIIL— DRAGONETS (Callionymidce). 



Body elongate, usually somewhat depressed, the pre- 

 operculum without a bony stay ; teeth not developed on the 

 palate, only in the jaws ; dorsal fins two in number, the 



