31. MACKONES. 75 



pungout spine and with seven soft rays ; anal fin short, with less 

 than twenty rays. Barhels eight. Teeth on the palate in a con- 

 tinuuus band ; no labial teeth. The upper jaw is the longer. Orbit 

 with a free circular eyelid. Caudal forked ; ventral with six rays. 

 Asia. 



This genus may be divided into the following groups: — 

 I. Adipose fin much longer than anal : Hypselobagrus, p. 75. 

 II. Adipose fin not much longer, or shorter than anal. 



A. A separate interueural shield on the nape : 3Iacru)u's, p. 78. 



B. No separate intemem-al shield : Hemibayrus, p. 79. 



I. Adipose fin much longer than anal. 

 1. Macroues aleppeusis. 



Mystus, Russell, Hist, of Alejypo, (ed. Angl.) p. 76. tab. 13. fig. 1; (ed. 



Leyden) p. 89. tab. 5. fig. 6; Gronov. Zoophyl. Pise. p. 126. u. 388. 



pi. 8«. tig. 6. 

 BagTus halepensis, Cuv. i^- Val. xiv. p. 413. 



D. 1/7. A. 12. P. 1/8. V. 6. 

 The height of the body is contained five times and a thii'd in the 

 total length (without caudal), the length of the head four times and 

 a half. Head rather broader than high, its greatest width being 

 three-fifths of its length. Snout somewhat depressed, not very broad, 

 its length being two-fifths of that of the head ; the upper jaw is the 

 longer. Nasal barbels small ; those of the maxillaries extend to the 

 origin of the adipose fin. Dorsal spine of moderate strength, scarcely 

 serrated behind, as long as the head, without snout. Dorsal fin 

 rounded above. The adipose fin commences immediately behind, and 

 is nearly thiice as long as, the dorsal : it is lower than the hinder 

 part of the tail. Caudal fin forked, -with the lobes rounded, the upper 

 being the longer. Pectoral spine as long as, but stronger than, that 

 of the dorsal fin, very strongly dentated interiorly. The ventral fin 



Gang. pi. 1. fig. 72 (without description).— Bagrus corsula,Ci<i;. ^- Val. 

 xiv. p. 408. — Ganges. 



2. Silurus erythropterus, 5/. tab. 3G9. fig. 2; Bl. Schn.p.385.—HaitM —•? 



3. vittatus, B/. tab. 371. fig. 2 ; Bl. Schi. p. 387.— Bagrus vittatus, 



Ciif.t^- Vol. xiv. p. 413. — Tranquebar. 



4. Bagrus trachacantlius, Cuv. <J- Val. xiv. p. 419. — Bengal. 

 •">. oc'ulatus, Ci'.v.<^- Val. xiv. p. 424. — Malabar. 



6. limbatus, Richards. Ichfh. Chiii. p. 283. — Canton. — The typical 



specimen is in the Museum of the Philosophical Society of the Uni- 

 versity of Cambridge. 



7. ■ aorinus, Valenc. inJacquon. Voy. Ind. Poiss. pi. 17. fig. l.^East 



Indies. 

 f^. Pimelodus chawArnmass., Ham. Buch. pp. 162, 37S (description faulty). — 

 Silundia chandramara, Cuv. <f Val. xv. p. r>2. — Batasio chandi-amara, 

 Blyth, Journ. As. Soc. Bcng. 1861, xxix. p. 150. — Kiver Atreyi. 



