GEN. GOBIUS. THE ONE-SPOTTED GOBY. 275 



and ventral fins, which are dusky, approaching to 

 black in some places, instead of being plain white. 



(Sp. 76.) G. unipunctatus. The One-spotted 

 Goby was first detected and described by Dr. Par- 

 nell. He found it in most of the sandy bays of the 

 Firth of Forth, but in greater number and larger 

 size near the salmon-nets above Queensferry, where 

 it may be found throughout the summer months in 

 water from two to three feet deep: he has also 

 taken it on the south coasts of England ; and Mr. 

 James Wilson obtained a fine specimen, three inches 

 and a half in length, in the Moray Firth. The 

 dorsals are remote, the anterior rays of the posterior 

 being longer than the succeeding ones ; the caudal 

 is even, and there is a large dark spot on the sum- 

 mit of the membrane, between the last two rays of 

 the anterior dorsal. Dr. Parnell found the One- 

 spotted Goby on the coast of England, sometimes 

 equally common, and mingled with the minutus, 

 whilst in other localities there was exclusively the 

 one or other only. It keeps more in deep water 

 than the minutus. 



(Sp. 77-) G. albus. For our knowledge of the 

 sixth and last, catalogued as British, The White 

 Goby, we are also indebted to Dr. Parnell, who 

 remarks (Trans. Royal Society of Edinburgh, xiv. 

 139) that this species cannot well be mistaken for 

 any other. He first noticed it in the Solway Firth 

 in June 1836, where he obtained in one day, after 

 the recess of the tide, fifty specimens. He considers 

 them as the fry of a larger species, which is different 



