337 



1. Nasal barbel longer than head; maxillary 

 barbel extending to caudal. Height 4 4^4 , 



head somewhat more M. wolffi p. 340. 



2. Nasal barbel reaching eye. 



x. Maxillary barbel extending about to anal. 



Height about 5, head 3 3 1 /? in length . M. nemurus p. 341. 

 (3. Maxillary barbel extending to base of ven- 

 trals. Height more than 6, head 3 3 / 4 4^4 



in length M. planiceps p. 342. 



b. Upper surface of head smooth M. wycki p. 343. 



III. Adipose fin shorter than anal M. gulio p. 344. 



i. Macrones nigriceps (C. V.) [Fig. 145, p. 336]. 



Bagrus nigriceps Cuvier & Valenciennes, Hist. Nat. Poissons, XIV. 1839, p. 412. 

 Bagrus macronemus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, p. 150. 

 Bagrus singaringan Bleeker, Nat. & Geneesk. Arch. Ned. Ind. 111(2). 1846, p. 150. 

 Bagrtis heterurus Bleeker, Nat. & Geneesk. Arch. Ned. Ind. Ill (2). 1846, p. 151. 

 Hypselobagrus macronema Bleeker, Atl. Ichth. II. 1862, p. 58. 

 Macrones nigriceps Giinther, Cat. Brit. Mus. V. 1864, p. 77. 

 Macrones nigriceps Vaillant, Nouv. Arch. Mus. Hist. Nat. (3) V. 1893, p. 72. 

 Macrones nigriceps Volz, Revue Suisse Zool. XII. 1904, p. 467. 

 Hypselobagrus nigriceps Fowler, Proc. Acad. Nat. Sc. Philad. (2) LVII. 1905, p. 470. 

 Hypselobagrus macronemus Jordan & Scale, Proc. U. S. Nat. Mus. XXXIII. 1908, 

 p. 526. 



B. II; D. II. 7; A. II 12; P. I. 9 II; V. 6. 



Oblong, profile behind dorsal convex, before dorsal strongly 

 sloping down in a straight line to the rounded snout, which 

 is slightly prominent. Head conical, mouthopening slightly 

 curved. Height about equal to head, 4 x / 2 4 3 /^ Head as broad 

 as high, its greatest width about I ! / 3 in its length, vertex 

 and occipital process granulated, the latter extending to the 

 granulated interspinal bone of dorsal. A median groove ending 

 at base of occipital process. Eye 3 4 1 / 2 . Nasal barbels exten- 

 ding to end of head, maxillary barbels on caudal or to its 

 end, mandibulary barbels reaching ventrals, mental ones on 

 pectoral. Anterior longest rays of dorsal conspicuously longer 

 than head. The osseous part of dorsal spine, slightly serrated 

 at the upper part of its hindborder, about equal to head without 

 snout. Adipose fin very long, contiguous with the dorsal and 

 as high as lowest part of tail. Base of anal more than 4 times 

 in base of adipose fin. Ventrals as long as pectorals, rather 

 INDO-AUSTRALIAN FISHES II. 22 



