68 CALIFORNIA ACADEMY OF SCIENCES. 



The specimen from Kio Doce, like most of the speci- 

 mens of other species from this river, is plain blue-black 



46. Chonophorus taiasica (Lichtensteiu). 



Euctenogobius latus O'Shaughnessy. Ann. & Mag. Nat. Hist., Series 



4, XV, 145. 1875. 

 Atlantic and Pacific Coasts of tropical America. 

 TLe specimens in the Museum are from Babia Eio Doce, Barbadoes, 



St. Vincent, St Lucia, Dominica. Mendez, Martinique, Panama. 



The color and form in this species vary much with the 

 stage of growth of the individual; the young resembling 

 the species of Hadropterns in color and shape. 



In the Panama specimen the head is narrow and pointed, 

 eye large; the series of spots along the sides, conspicuous 

 and well defined; the caudal has three black bars instead of 

 the usual nine or ten narrow lines; a black spot at base of 

 caudal. Three specimens, collected by Mr. S. Garman at 

 Dominica, are similarl}^ marked, except the caudal, which 

 has wavy black lines; specimens collected by him at St. 

 Vincent are of a plain sand color. In the older forms the 

 head becomes much widened, the premaxillary widens in 

 front and projects over the lower jaw, the coloration often be- 

 comes less defined, varying from plain sand color to dark 

 olive. The teeth in the young are proportionately larger; 

 many of the teeth are lost with age, and thej seem in much 

 less regular series. 



47. Chonophorus mexicanus Giintber. 



West Indian fauna. 



XIV. Lepidogobius Gill. 

 §. Lepidogobius. 



48. Lepidogobius lepidus Girard. 



Californiau fauna. 



The specimens in the Museum are from San Francisco. 



