20 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. $2 



Lateral line very distinct, nearly median, slightly decurved ante- 

 riorly. Dorsal mostly obliterated, and pectorals also. Ventrals and 

 anal wholly wanting, as is the whole caudal peduncle. Gular plate 

 obliterated. 



This fish is undoubtedly one of the Elopidse. It is near Calarno- 

 plcurus; distinguished from C. cylindricus by the large scales and 

 (perhaps generically) by the narrow subopercle. 



A second nodule (No. 15, Rocha Collection) shows a portion of 

 the posterior part of the body of a large example. The ventral fins, 

 as in Calamopleunis cylindricus, are inserted under the last rays of 

 the dorsal, both fins being apparently rather small. Between the dor- 

 sal and ventrals there are apparently only about 20 scales. The lat- 

 eral line, although abraded, is readily traceable. Opercle and sub- 

 opercle separate, separated by a distinct suture. 



The relatively large size of the scales leads us to refer this example 

 to Calamopleunis ve stilus. 



The counterpart of No. 11 is in the geological collections at Stan- 

 ford University. 



Genus NOTELOPS Woodward 



Notelops Woodward, Cat. Fossil Fishes, iv, p. 27, 1901 ; type, Rhacolcpis 

 braina Agassiz. 



This genus is close to Calamoplcurus, from which it differs in the 

 much stronger teeth and in the absence of a distinct lateral line. 

 From Rhacolcpis it differs in the entire scales, and, according to 

 Woodward, in having the parietal bones not separated by a supra- 

 occipital. This character we have been unable to verify. 



6. NOTELOPS BRAMA (Agassiz) 



Plate VI, Fig. i 



? Amblypterus olfcrsi Agassiz, Poissons Fossiles, 11, pt. i, p. 40, 1833; 



Ceara, Brazil (fragment; said to be unidentifiable). 

 Agassiz, Poissons Fossiles, iv, p. 293, 1844; Ceara. 

 (Not Rhacolcpis olfersi Agassiz, Comptes Rendus, xviii, p. 1012, 1844, 



which is based expressly on a figure of Rh. buccalis.^) 

 Phacolepis hrama Agassiz, Edinburgh Phil. Journ., xxx, p. 83, 1841. 



Barra do Jardim, based on a better specimen (misprint ior Rhacolcpis). 

 Rhacolcpis brama Woodward, Proc. Z06I. Soc. London, p. 539, pi. xlvi, 



fig. i; pi. XLVii, fig. 4; Ceara. 

 Notelops brama Woodward, Cat. Fossil Fishes, iv, p. 27, 1901 ; Ceara. 



* In the Comptes Rendus, Agassiz thus refers to "Rhacolcpis olfcrsi:" 

 "C'est au genre Rhacolcpis qu' appartient I'espece figuree par Spix ; elle est 

 plus large que la votre (R. buccalis), ses ecailles sont plus grandes, et le second 

 sous-orbitaire est plus etroit que les autres. Je I'ai appellee R. olfcrsi." 



