462 Gobioidei, Discocephali, and Taeniosomi 



esmeralda or emerald-fish, is notable for its slender body 

 and the green spot over its tongue. Gobiosoma alepidotum 

 and other species are scaleless. Barbulifer ceutha'cus lives in 

 the cavities of sponges. Coryphopterus similis, a small goby, 

 swarms in almost every brook of Japan. The species of Ptero- 



FIG. 417. Pterogobius daimio Jordan & Snyder. Misaki, Japan. 



gobius are beautifully colored, banded with white or black, or 

 striped with red or blue. Pterogobius virgo and Pterogobius 

 daimio of Japan are the most attractive species. Species of 

 Cryptocentrus are also very prettily colored. 



Of the species burrowing in mud the most interesting is 

 the long-jawed goby, Gillichthys mirabilis. In this species 



FIG. 41S Darter Goby, Aboma etheostoma Jordan. Mazatlan, Mex. 



the upper jaw is greatly prolonged, longer than the head, as in 

 Opisthognathus and Neoclinus. In the "American Naturalist" 

 for August, 1877, Mr. W. N. Lockington says of the long- 

 jawed goby: 



" I call it the long-jawed goby, as its chief peculiarity con- 

 sists in its tremendous length of jaw. A garpike has a long jaw, 

 and so has an alligator, and it is not unlikely that the title will 

 call up in the minds of some who read this the idea of a terrible 



