424 A Revision of the 



16. CURIMATUS SIAODAIiKNJE:. 



Sardina blanca. 



Curimatus magdalence Steind., '78a, 34 (Rio Magdalena); id. '79a (Ma- 

 moni River, Panama); id. '80a, 15 (Cauca), 

 Habitat, Rio Magdalena and tributaries; Panama. 



17. CTJRIMATUS GILB£RTI. 



Papa- terra. 

 Curimatus gilberti Quoy and Gaimard, 219, pi. 48, fig. 1 (Rio Macacu). 

 Curimatus gilberti C. and V. xxii., 1849, 16 (Rio . Janeiro; Rio 

 Macacu); Gthr., '64a, 289 (copied); Steind., '74a, 29 (Rio Parahyba 

 near Campos, Mendez, and Juiz de Fora; Rio Macuri above 

 Porto Alegre; Rio Muriahe; Rio Itabapuana). 

 Curimatus voga Hensel, '70a, 78 (S. Leopoldo, Rio dos Sinos). 

 Curimatus albula Ltitken, '74a, 127 (Rio das Velhas and tributaries); 

 id. '75a, 186 and ix. 



Habitat, rivers of southeastern Brazil from Rio Plata to Rio San 

 Francisco, 



Many specimens from Buenos Ay res; Rio Grande do Sul; Santa Cruz; 

 Minas Geraes; Campos; Mendez; Muriahe; Sao Matheos; Itabapuana; 

 Porto Alegre. 



Rather deep and stout, the dorsal and ventral outlines usually equally 

 arched. Preventral region somewhat flattened, or more usually rounded : 

 no enlarged median series of scales. Postventral region rounded, with 

 an obtuse median keel. Back in front of dorsal broad and rounded, a 

 few scales in front of the dorsal being keeled. Postdorsal region some- 

 what flattened or rounded. 



Anterior profile straight or somewhat depressed, upper profile arched. 

 Eye little longer than snout, 3^-4 in head, lf-2 in interorbital. 



Scales persistent, crenate; caudal naked. 



Fins all low. Highest dorsal ray shorter than the caudal lobe, which 

 is usually shorter than the head. Anal slightly emarginate, not reach- 

 ing caudal. Pectorals not near reaching to ventrals, ventrals not to 

 vent. 



Silvery, darker above. Tips of dorsal and middle caudal rays occa- 

 sionally dusky. Sometimes a dark line or band along the tail, termi- 

 nating in an elongate black spot at the caudal. 



Head 3f-3t; depth 2f-3. D. 11-12; A. 10-11. Scales 6-36 to 41-5 to 6. 



17b. CURIMATUS OILBERTI BREVIPINNIS var. nov. 



Type, No. 789. One specimen, .14 m. Rosario (La Plata); Captain 

 Brooks. 



More elongate than gilberti. Preventral region flattened, with a me- 

 dian series of enlarged scales. Profile depressed at the occiput. Eye 



