28 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 52 



wedge-shaped, broadest below. Ventrals rather large, inserted 

 opposite front of dorsal ; vertebras spool-shaped, about 22 before 

 dorsal. Scales mostly lost, apparently firm and cycloid, with marked 

 concentric striae, about 14 in a cross-series below dorsal, these much 

 larger than in Calamopleurus. 



This specimen is about 5 inches long, represented in counterpart, 

 the portion in front of the preopercle and that behind the vent being 

 lost. A small example (No. 32, Rocha Collection) of the same spe- 

 cies and showing nearly the same parts is not quite 3 inches long. 



;'"y^r' A AAA,»;'y ^y. ^^•i'- 



TT 



V,A>" ' . 



Fig. 20.— Cearana rochce Jordan and Branner. From type. Ceara, Brazil. 



This shows the large, undivided opercle. The eye is shown also, 

 its diameter about two-thirds that of the opercle, and the space 

 between eye and opercle about two-thirds eye. 



Fig. 21. — Scale of 

 Cearana roclia. 



Fig. 22. — Ostcoglossum bicirrhosum 

 (a living form). Itaituba, Brazil. 



What seems to be the maxillary is also evident, rather broad, and 

 extending behind the eye. About 18 vertebrae before dorsal, which 

 is rather higher than long. On the same stone is a faint impression 

 of another specimen still smaller. 



