164 
TWO-SPOTTED GOBY. 
first dorsal the longest, decreasing gradually, in another the 
second and third ray longer, the rays of these and the anal 
not bound down, but carrying out the membrane. Second 
dorsal and anal with the first rays longest, and both these 
fins equal in length, ending far from the tail. Pectoral fin 
having rays of nearly equal length, except the two or three 
lowest rays, which are shorter. Tail slightly round. Ventrals 
forming a simple oval, with a slight line through the middle. 
Colour a lively chesnut brown, mottled on the back with 
s'ome regularity, sometimes with light specks. At the root of 
the tail a conspicuous, dark, ocellated spot, and another at the 
side, covered partly by the pectoral fin. Fins usually pale, 
but sometimes with longitudinal bars. Iris of the eye commonly 
red. In one specimen the first ray of the second dorsal fin 
was shorter than the second, and in another it was longer 
than all besides; and in this example the second dorsal and 
anal advanced nearer to the tail than in others. These 
mark a distinction of species; but in this instance they are 
pointed out to shew the liability of some kinds of Gobies to 
sport into varieties. 
