FISHES OF CEARA, BRAZIL JORDAN AND BRANNER 9 



dd. — (Elopid^) : Gular plate present ventrals (in Cretaceous 

 species from Brazil) inserted under last rays of dorsal; 

 temporal region with a bony plate or sheath ; two parallel 

 bony plates behind eye, with a third, usually larger, one 

 sheathing the cheek. 



f. — Teeth subequal, without large canines. 



g. — Lateral line well developed; teeth small (less than 



one-tenth diameter of eye). 



It. — Scales small, 30 to ;};^ in a cross-series from 



dorsal to ventral ; suborbital broad, its 



suture oblique. Calamopleurus cylindricus, 4 



hh. — Scales large, about 20 in a cross-series from 



dorsal to ventral ; suborbital very narrow ; 



its suture nearly horizontal 



Calamopleurus vestitus, 5 

 gg. — Lateral line obsolete or nearly so ; teeth rather 

 large. 



i. — Scales cycloid, entire ; teeth strong, more 

 than one-tenth diameter of eye. 



Notelops brariia, 6 

 ii. — Scales crenate ; teeth probably small. 



y. — Body subcylindical, the depth not 



much greater than length of head. 



Rhacolepis buccalis, 7 



/;'. — Body compressed, the depth much 



greater than length of head. 



Rhacolepis latus, 8 



if. — Teeth very strong, unequal, many of those in each 



jaw canine-like (scales unknown) . .Enneles audax, 9 



e. — Chirocentrid,e(?) : Gular plate wanting; scales large, the 



surface pustulose (no lateral line). 



Cladocychis gardncri, 10 

 cc. — Osteoglossid.e(?) : Opercle large, without suture, the subopercle 

 wanting; scales firm, with concentric striae; dorsal inserted over 

 ventral, at a distance behind head greater than depth of body. 



C car ana rochcc. 11 



Family ASPIDORHYNCHID/E 

 Genus BELONOSTOMUS Agassiz 



Belonostomus Agassiz, Neues Jahrbuch, 1834, p. 388; type. Jspidorhynchus 



teniiirostris Agassiz. 

 Ophirhachis Costa, Ittiol, Fossil, Ital., 1856, p. 13; type, Opliirliaclns de- 



perditus Costa. 

 ? Platycerhynchus Costa, Atti Acad. Pontan, viii, 1864, p. 98; type, Platy- 



ccrhynch us rh o in b'C us. 



This genus contains numerous species of large, gar-like fishes, 

 having rhombic scales, those of the lateral line deeper than the 

 others, and having both jaws produced, subequal in length. Accord- 



