116 SILURII)^. 



111. Adult. West Indies. Purchased of Mr. Scrivener. 

 n, o-p. Half-grown. South America. 

 q. Adult: stuffed. 



2. Pimelodus ornatus. 



Pimelodus omatus, Kner, Sitzysber. Wren. Acad. xxvi. p. 411. fig. 18, 

 D. 1/6. A. 13. P. 1/10. 



Head finely granulated above ; occipital process obtusely keeled, 

 elongate, triangular, nearly twice as long as broad, extending on to 

 the triangular basal bone of the dorsal spine, which is as long as 

 broad at its base. The length of the adipose fin is one-fifth of the 

 total (without caudal), and its distance from the dorsal is nearly 

 equal to the length of the latter. The maxillarj^ barbels extend to, 

 or nearly to, the end of the tail, the outer ones of the mandible be- 

 yond the root of the pectoral. 



Snout rather long, broad, depressed, with the upper jaw promi- 

 nent ; the band of intermaxillary teeth is very broad. The eyes are 

 situated somewhat behind the middle of the head, and their diameter 

 is two-thirds of the width of the interorbital space. Dorsal and pec- 

 toral spines of moderate strength, equal in length, half as long as 

 the head ; the pectoral spine is serrated along both edges. Caudal 

 fin deeply forked. A broad brown band descends obliquely back- 

 wards from the nape of the neck ; a whitish cross-band behind it ; a 

 brownish longitudinal band along the back, continued on the upper 

 caudal lobe ; another band along the lateral line ; a large black 

 ocellus anteriorly on the middle of the dorsal fin ; the lower caudal 

 lobe with a blackish band similar to that of the upper. 



Brazil, Surinam. 



rt-6. Fine specimens. River Capin, Para. Pm-chased of Mr. Stevens. 

 c. Adult. Purchased of M. Parzudaki. 



3. Pimelodus eques. 



Pimelodus eques, Miill. ^ Troscli. Hur. Ichth. iii. p. 5. 

 B. 7. D. 1/6. A. 12. P. 1/9. 



Head strongly granulated above; occipital process broader than 

 long, extending on to the large triangular dorsal shield. Adipose 

 fin twice as long as the dorsal. The maxillary barbels extend to the 

 end of the caudal, the outer ones of the mandible to the end of the 

 pectoral. The length of the head is less than one-fourth of the total 

 (with the caudal) ; the upper jaw but little longer than the lower. 

 The eyes occupy the middle of the head, and their diameter is two- 

 thirds of the width of the interorbital space. The dorsal spine is 

 slender, but little shorter than the rays, serrated. The lower caudal 

 lobe is the longer. Pectoral spine serrated along both edges. A 

 saddle- shaped black spot on the shoulder, below the commencement 

 of the dorsal fin. {M. 6f T.) 



Guiana. 



