372 DR. A. GiJNTHER ON CENTRAL-AMERICAN FISHES. [NoV. 26, 



ranean, that perhaps it would be better not to separate it ; the only 

 difference which we can find is the form of the soft dorsal fin, which 

 is considerably higher than the spinous in the Mediterranean species. 



GOBIUS PARADOXUS. 



D. 6 I 11. A. 9. L.lat. 14. 



The head and the trunk are entirely naked to between the second 

 dorsal and the anal, the remainder is covered by ctenoid scales of 

 moderate size ; there are nine or ten of them in one of the anterior 

 transverse series. The height of the body is contained five times and 

 two-thirds in the total length, the length of the head four times and a 

 quarter. Head nearly as broad as high, its width being rather more 

 than one-half of its length. Eyes rather close together, of moderate 

 size. Snout obtuse, rounded, as long as the eye ; cleft of the mouth 

 slightly oblique, with the jaws equal in length, and with the max- 

 illary extending to below the middle of the eye. Teeth in villiform 

 bands ; there are two curved canine teeth on each side of the lower 

 jaw. The first dorsal spine is elongate, filiform, sometimes extending 

 to the base of the caudal ; caudal rounded, shorter than the head ; 

 none of the pectoral rays silk-like ; the ventral terminates at a great 

 distance from the vent. Blackish (in spirits), caudal and ventral fins 

 black ; the dorsal filament whitish. 



GOBIUS SEMINUDUS. 



D. 6 I 15. A. 10. 



Head and anterior portion of the trunk naked ; sides with exceed- 

 ingly small scales, becoming somewhat larger posteriorly. The 

 height of the body is one-sixth of the total length, the length of the 

 head one-fourth. Head with the cheeks swollen, depressed, broader 

 than high, its width being two-thirds of its length. Eyes close to- 

 gether, directed upwards, of moderate size ; snout obtuse, as long as 

 the eye ; cleft of the mouth slightly oblique, with the jaws equal 

 anteriorly, and with the maxillary extending to below the middle of 

 the eye. Teeth in villiform bands, the anterior of the lower jaw 

 slightly enlarged ; there are two small curved canine teeth on each 

 side of the lower jaw. Dorsal fins rather low, the hind part of the 

 spinous dorsal being scarcely lower than the anterior ; caudal round- 

 ed, as long as the pectoral ; none of the pectoral rays silk-like ; 

 ventral rather short, terminating at a great distance from the vent. 

 Blackish, fins and sides of the head dotted with black ; ventrals 

 black. 



The largest of the specimens examined is two inches long. The 

 species has such peculiar characters that it will be readily recognized. 

 It has no natural affinity to the other .small-scaled Gobies, which 

 generally have an elongate form. 



EuCTENOGOBIUS SAGITTULA. 



U. 6 I 13. A. 14. L.lat. 58. 

 Twenty longitudinal series of scales between the dorsal fin and the 



