414 MEMOIRS OF THE CARNEGIE MUSEUM 



Eye 6.5 in the head in a specimen about 500 mm., 5 in specimens 300-400 mm., 

 4 in specimens 50-250 mm.; 2 in the interorbital in the largest, 1.4 in specimens 

 300-400 mm.; .6 in specimens 50-150 mm. 



Head 3-3.25 in the length measured to the end of the last scale on the caudal; 

 depth 4-4.3; D. 15, rarely 16; A. 10; scales 43-45; thirteen, rarely fourteen, 

 scales from lateral line to lateral line across the back in front of the dorsal. 



Elongate, subcylindrical, the head pointed; mouth large, the lips meeting so 

 as to obscure their sinuate margin; maxillary-premaxillary border about half the 

 length of the head, the maxillary slipping under the prolonged first suborbital; 

 cheeks entirely covered by the first suborbital, which is continued back to the 

 vertical limb of the preopercle, and the second and third suborbitals above it; 

 origin of dorsal 1.5 orbital diameters nearer to the snout than to the base of the 

 middle caudal rays, its margin broadly rounded, the highest rays a little over half 

 the length of the head, its base one-half its distance from the end of the lateral line; 

 caudal equal to the length of the head less the opercle; anal pointed, scarcely 

 reaching the caudal; ventrals rounded, inserted a little in advance of the middle 

 of the dorsal, shorter than the caudal, equal to the pectorals. 



Scales cycloid, regularly imbricate, nowhere specially increased or decreased 

 in size; fins naked; lateral line straight, axillary scale very small. Tubes of the 

 lateral line well-developed, multiple in the larger specimens. 



Lower jaw mottled; a dark bar from the eye to the angle of the preopercle, 

 another running straight back, expanding on the opercle; frequently a spot in the 

 membrane behind the tip of the subopercle. Four horizontally V-shaped cross- 

 bars, the widest down from the front part and from in front of the dorsal; the 

 second and third from spots on the back behind the dorsal and the last from the 

 base of the upper caudal rays; dorsal with five rows of spots or with five broad 

 dark bands; caudal similar; anal and upper surface of ventrals and pectorals each 

 with four or five bars and some spots. 



267. Hoplias malabaricus Bloch. (Plate LXII, fig. 2.) 



"Tareira" Marcgrave, Hist. Rer. Nat. Bras., IV, 1648, 157. 



Esox malabaricus Bloch, Ausl. Fische, VIII, 1794, 149, pi. 392. 



Synodus malabaricus Bloch and Schneider, Syst. Ichth., 1801, 397. 



Macrodon malabaricus Eigenmann and Eigenmann, Proc. Cal. Acad. Sci., (2), 

 II, 1889, 102 (Para; Gurupa; Villa Bella; Avary; Montalegre; Arary; Porto 

 do Moz; Obidos; Lago Alexo; Tonantins; Manaos; Tapajos; Santarem; 

 Cudajas; Hyanuary; Manacapurii; Rio Negro; Silva, Lake Saraca; Teffe; 



