12. OETUIES. .'{49 



inches, lines. 



Total length 7 8 



Height of the body , . . 2 5 



Length of the head 1 10 



Diameter of the eye 7 



Length of the second dorsal spine 1 1 



of the ninth dorsal spine 5 



of the middle caudal ray 41 



of a caudal lobe 1 10" 



of the second anal spine 7^ 



of the thii'd anal spine 8 



of the pectoral fin 1 11 



of the ventral fin 1 1 



of the squamous flap 10 



of a scale 3| 



Height of a scale 4^ 



12. Gerres squamipinnis. (Plate XXI.) 

 D. ^. A. y. L. lat. 43-44. L. transv. 5/13. 



The height of the body is 2| in the total length (without caudal 

 fm) ; the diameter of the eye is 3| in the length of the head, rather 

 shorter than the snout, but equal to the distance between the e^^es. 

 The groove for the processes of the intermaxillary bones is broad, 

 triangular, entirely scaleless, and does not reach to the vertical from 

 the centre of the eye. The dorsal spines are rather slender and 

 slightly compressed ; the second is 1|^ in the length of the head. 

 The second anal spine is rather strong, stronger and a little longer 

 than the third; its length is If in that of the head: caudal fin 

 deeply forked, entirely covered with scales ; the length of a lobe is 

 nearly 3| in the total. Uniform sUvery ; the margin of the dorsal 

 fin blackish. 



Caribbean Sea. 



a-d. Adult : skins. Jamaica. From Dr. PamcU's Collection. 

 e. Half-grown : skin. Jamaica. From Dr. PameU's Collection. 

 /, Adult: not good state. Guatemala. Purchased of Mr. Frank. 



Description. — The body is moderately elevated, its greatest depth 

 being below the anterior part of the spinous dorsal, where it is con- 

 tained 2| in the total length, without caudal fin, or 3| in the same 

 length, the caudal included. The upper profile, anteriorly and pos- 

 teriorly, descends as much as the lower ascends, and they meet 

 at an acute angle in front. The length of the head is 3 j in the 

 total, Avithout caudal fin. The snout is rather longer than the dia- 

 meter of the eye, and the upper maxillary extends slightly beyond 

 the anterior margin of the eye ; the part of the maxiUary which is 

 not hidden by the prasorbital is rather elongate, ovate. The groove 

 for the processes of the intermaxillary bones is rather broad, ti-ian- 

 gular, widening anteriorly, with a roimded posterior angle, which is 

 situated in the vertical from the anterior third of the orbit. The 



