1. GOBIUS. 61 



114. Grobius aeneo-fuscus. 



reters in Monatsher. Bcrl. Acad. 1852, p. G81. 

 D.G|^. A.± L.lat.GO. 



Sixteen longitiidinal scries of sealcs between the second dorsal and 

 the anal fin. The extent of the snout is one-third of the length of 

 the head. Eye small, one-seventh of the length of the head. The 

 height of the body is contained five times and three -fourths in the 

 total length, the length of the head four times and a half. The in- 

 tcrorbital space is flat, and its width e(]uals the diameter of the eye. 

 Teeth in a very narrow band in the upper jaw. The upper jaw is 

 longer than the lower, and the maxillary does not extend to the ver- 

 tical from the orlnt. The distance of tlie first dorsal from the eye is 

 considerably more than that of the snout from the prajoperculum. 

 Scales on the nape much smaller than those on tlic sides. The ven- 

 tral terminates at a great distance from the vent, and has a broad 

 basal membrane. Dorsal fins lower than the body. Ground-(;oIour 

 green on the back, with metallic reflexions on the sides, irregidarly 

 spotted and dotted with dark brown ; two oblique streaks from the 

 eye to the lip ; dorsal and caudal rays with brown dots, forming lon- 

 gitudinal stripes on the former, and transverse ones on the latter ; 

 ventrals and anal white. 



Coast of Mozambiciue. 



a. Four and a half inches long. Sena. From Prof. Peters's Col- 

 lection. 



This species is so closdy allied to the "West Indian G. banana, that 

 it requires a very close examination to detect differences by which 

 both may be distinguished, Avhilst, on the other hand, it is very 

 distinct from the East Indian G. grammepomus. Its most cha- 

 racteristic feature appears to be the snout, which is comparatively 

 shorter than in G. banana ; yet some specimens of the latter approach 

 it very closely also in this respect. 



115, Gobius mexicanus. 



D. 6 1 11. A. 11. L. lat. 76-82. 



Twenty-four series of scales between the second dorsal fin and the 

 anal. Tlie height of the body is contained seven times and a half in 

 the total length, the length of the head four times and four-fifths. 

 The head is flat superiorly, as broad as high, its width bcins: nearly 

 one-half of its length. Snout elongate, with the upper profile 

 oblique; cleft of the mouth horizontal, the upper jaw being rather 

 the longer. Canine teeth none ; teeth of the outer scries enlarged. 

 The maxillary extends to the vertical from the anterior margin of 

 the eye. The width of the interorbital space equals the diametcn- of 

 the eye, which (in mature specimens) is one-eighth of the length of 

 the head. The head is naked ; scales ctenoid, tliose on the nape and 

 on the anterior part of the body very small. Tlie distance of the 



