2. AGONOSTOIMA. 465 



Fresh waters of San Domingo and probably of Jamaica. Nine 

 inches long. 



a. Adult female. San Domingo. Purchased of Mr. Cuming, 



b-e. Adult and half-grown : sldns, Jamaica ? From Dr. ParneU's 



Collection. 

 /. Adult. West Indies. Presented by the Medical Officers, E.A., 



at Fort Pitt. 



Description. — This species is nearly allied to A. moiiticola, from 

 which it may be rcachly distinguished by the characters mentioned ; 

 it is necessary, however, to give a more detailed description, as 

 probably more species will be discovered. The body is moderately 

 compressed, with the ujjper anterior profile considerably arched ; its 

 greatest depth is below the origin of the spmous dorsal, where it 

 is contained four times and a tliird or four times and a half in the 

 total length. The length of the head is nearly equal to the height 

 of the body, or contained three times and two-thii-ds in the total 

 length, the caudal fin not included. The interorbital space is quite 

 flat, its width being rather more than tliat of the orbit, which equals 

 the extent of the snout, and is one-fourth of the length of the bead. 

 The snoiit is compressed, with thin lips, and with the cleft of the 

 mouth horizontal ; the maxillary extends beyond the vertical from 

 the anteiior margin of the eye. The nostrils are close together, the 

 anterior being on the middle between the end of the snout and the 

 orbit. There are foiu' series of scales between the orbit and the angle 

 of the prfeoperculum, sixteen between the snout and the spinous 

 dorsal fin. The latter commences midway between the snout and 

 the base of the caudal, above the tenth scale of the lateral line ; the 

 length of its anterior spine is more than one-half of that of the head. 

 The soft dorsal is as high as the spinous, and commences above the 

 twenty-second scale, or above the third soft ray of the anal. Caudal 

 deeply emarginate ; anal higher than the dorsal opposite. The pec- 

 toral is inserted above the middle of the depth of the body, and ex- 

 tends to the ninth scale of the lateral line ; it is as long as the head, 

 the length of the snout not included ; the ventral is somewhat shorter 

 than the pectoral. , 



Nearly uniform greenish (in spirits) ; blackish blotches between 

 the dorsal spines. 



Length of a mature female six inches ; the species, however, at- 

 tains to a larger size. 



9. Agonostoma forsteri. 



Mugil albida, Forst. Descr. Am»i. ed. Licht. p. 145. 



forsteri, Bl. Sclm. p. 120 ; Cuv. S,- Vnl. xi. p. 141 ; Hichards. Voy. 



Enb. ^- Terr. Fishes, p. 77. pi. 44. figs. 20-2(5 (young). 

 Dajaus diemensis, Hichards. Froc. Zoo/. Soc. 1840, p. 25, and Trans. 



Zool. Soc. iii. p. 123, and Vo)/. Ereb. S,- Terr. Fishes, p. 37. pi. 26. 



figs. 1-4 5 Jenyns, Zool. Beagle, Fishes, p. 82. 



D. 4 1 3^. A. ^. L. lat. 55. Case, pylor. 3. 

 Narrow bands of viUiform teeth in the jaws, on the vomer, on the 



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