FISHES OF CEARA, BRAZIL JORDAN AND BRANNER I9 



(i^-\- I -f- 15) between dorsal and ventrals. The lateral line is very 

 distinct. The well-preserved ventral is under the very last rays of 

 the dorsal, a character which at once distinguishes Calamopleurus 

 from the living genus Elops, in which the dorsal is inserted directly 

 over the ventrals. 



Another specimen (No. 12, Rocha Collection) shows much the 

 same parts, but not nearly so well preserved. The head is somewhat 

 crushed and telescoped ; the teeth are obliterated. The gular plate is 

 apparently present. The lateral line is evident, but its position is dis- 

 torted. There are 25 scales before the dorsal along the course of 

 the lateral line. The ventrals are under the last rays of the dorsal, 

 at a distance from base of caudal but little more than the length of the 

 head. Vertebras about 50. 



Another nodule (No. 13, Rocha Collection) is a badly telescoped 

 individual of Calamopleurus cylindricus showing the scales of the 

 sides. 



5. CALAMOPLEURUS VESTITUS Jordan and Branner, new species 



Plate V 



A nodule contains the outline of the body and of part of the side 

 of the head of a fish with cycloid scales, similar to those of Calamo- 

 pleurus cylindricus, but very much larger. The specimen when com- 

 plete would be about a foot in length. 



We here describe this specimen (No. ii, Rocha Collection) as a 

 new species of Calamopleurus. It differs from the type species, 

 however, in the very much smaller size of the subopercle, a character 

 which may distinguish it generally. We call the species Calamo- 

 pleurus vestitus, as the body is well clothed with scales. 



Head about 3^^ in length to base of caudal. Greatest depth about 

 equal to length of head. Distance from gill opening to dorsal a little 

 more than greatest depth. Anterior part of head destroyed ; traces 

 of three plates behind and below eye, as in other Elopidae. Upright 

 limb of preopercle directed forward above. Opercle large, convex, 

 with some black pigment within the bone as long as deep. Sub- 

 opercle with concentric striae, its depth about 33^ times in depth of 

 opercle. Suture between opercle and subopercle very oblique and 

 somewhat curved. 



Scales cycloid, deeper than long, much larger than in any other of 

 the Cretaceous Elopidae from Brazil, about 28 along lateral line to 

 front of dorsal ; 8 in a vertical series from front of dorsal to lateral 

 line, 10 to 12 between lateral line and ventrals. In Calamopleurus 

 cylindricus there are about 32 scales before dorsal on lateral line, 

 about 15 above it and 18 to 20 below. 



