FAMILY, I-SILURID^. 443 



between it and basal bone Length of base of adipose dorsal equal to lialf tbat of the interspace between the 

 two dorsal fins. Coasts, estuaries, and tidal waters, of the whole of India and Burma 



6. Macrones punctatus, A. 11-13. Upper surface of the head almost smooth. Occipital nrocess verv 

 narrow, a long interspace between it and basal bone of the dorsal fin. Brown, with some black snots aloni 

 the sides. Bowany river at foot of Neilgherry hills. ° 



_ 7. Macrones corsula, A. 11-13. Upper surface of the head roughened. Occipital process short with a 

 long interspace between it and the basal bone of the dorsal fin. Brown, with some black spots along the sides 

 From Orissa, through Bengal and Assam. ° 



8. Macrones micropMhalmus, A. 12. Occipital process short, with a long interspace between it and the 

 basal bone of the dorsal fin. Dorsal spine smooth, weak, articulated in its upper three-fourths. Burma 



9. Macrones camasius, A. 11-13. Occipital proces.9 reaches basal bone. Maxillary barbels reach 

 caudal fin. Adipose dorsal long, commencing just behind the rayed fin. Dorsal spine entire. Silvery oft«n 

 with a black spot at base of dorsal spine, and fins stained with dark. Sind, throughout India and Assam 

 to Burma. 



10. Macrones tengara, A. 11-13. Median groove on head reaches base of occipital process, which latter 

 reaches the basal bone of the dorsal fin. Golden, with a black shoulder spot and about five lontritudinal dark 

 bands. Northern India and Assam. ° 



11. Macrones oculatus, A. 11-13. Eye 3 to 3^ in length of head : occipital process reaches basal bone 

 Maxillary barbels reach middle of anal fin. Base of adipose dorsal as long as that of the rayed fin. Dark 

 spot anteriorly at base of dorsal fin. Malabar coast and Coimbatore district. 



12. Maorones vittatus, A. 9-12. Median groove on head does not reach the base of the occipital process 

 which latter reaches the basal bone of the dorsal. Sind, India, and Burma. ' 



13. Macrones leucophasis, A. 11-12. Maxillary barbels reach anal fin. Purplish-black, with some white 

 spots. Burma. 



14., Macrones montanws, A. 12. Head 5 in the total length. Median groove on head does not reach 

 occipital process, which last extends to the basal bone. Maxillary barbels reach anal fin. A dark shoulder 

 mark, a light band along the body, and dark spot at base of caudal. Western ghauts. 



1.5. Macrones heletius, A. 9-10. Head 4| in the total length. Median groove on head does not reach 

 occipital process, which last does not quite reach the basal bone. MaxiUary barbels reach middle of anal fin. 

 A large pre-anal papilla. A dark shoulder mark. Coromandel coast. 



16. Macrones Malabaricus, A. 10-11. Head 4f to 6^ in the total length. Median groove on the head 

 does not reach base of occipital process, which last has a long interspace between it and the basal bone. 

 Maxillary barbels reach middle or end of ventral fin. A dark shoulder spot, another at base of caudal fin. 

 Malabar coast and Western ghauts. 



17. Macrones a/rmatus, A. 11. Head 65 in the total length. Median groove on the head almost reaches 

 the base of the occipital process, which last reaches the basal bone. Maxillary barbels reach end of ventral fin. 

 A dark blotch at base of caudal fin. Malabar and western ghauts. 



18. Macrones Bleekeri, A. 9-10. Head 61 to 6^ in the total length. Median groove on the head reaches 

 the base of the occipital process, which last reaches the basal bone. Maxillary barbels reach the anal fin. Two 

 light longitudinal bands, amd sometimes a dark shoulder spot. Indus, Jumna, and upper part of the Ganges 

 rivers, also the Irrawaddi in Burma. 



1. Macrones chryseus, Plate XCIX, fig, 3. 



Pseudobagrus chryseus, Day, Proc. Zool. Soc. 1865, p. 271, and Fish. Mai. p. 185, pi. xiii, f. 2. 

 Mungil yata, Mai. ; Neela hatwrnee, Hind. 



B. X, D. \ I 0, P. 1/6, V. 6, A. 26-28, C. 17-19. 



Length of head 4-|- to 4|, of caudal 5, height of body 5 in the total length. Uyes — diameter 4 to 5 in the 

 length of head, 1\ diameters from the end of snout, and 2 to 2| apart. Greatest width of the head equals 4/5 

 of its length. Upper jaw slightly the longer. Width of gape of month nearly equal to half the length of the 

 head. Upper surface of head, opercles, and humeral process with smooth ridges. Occipital process twice as 

 long as wide at its base, no interspace between it and the basal bone. The superior longitudinal groove on the 

 head shallow, reaching to opposite the hind edge of the eye. Barbels — the nasal rather above half 

 the length of the head, the maxillary slightly longer: the external mandibular reach the base of the pectoral 

 fin, whilst the' internal ones are one-fourth shorter. Teeth — in a narrow uninterrupted semilunar band across 

 the palate. Fins — dorsal spine as long as the head behind the middle of the eyes, strong, with about ten 

 denticulations posteriorly, and three or four anteriorly near its summit, whilst it ends in a soft prolongation : 

 adipose fin short, commencing over the last fourth of the anal. Pectoral reaches the ventral, its spine stronger 

 than that of the dorsal and as long as the head excluding the snout, serrated externally and with 16 or 18 

 strong teeth internally. Ventral rather above half as long as the pectoral and reaches the anal, the base of 

 which last fin equals the length of the head, it is highest anteriorly. Caudal slightly, or deeply lunated or even 

 forked. Free portion of tail rather higher than long. Colours — back greenish-yellow, sides golden : a large 

 round black mark on the shoulder surrounded by a light yellow ring. Dorsal and anal fins yellowish-orange, 

 stained with darker at their margins. Caudal yellow, with a black base and dark edges. 



Sabitat- — Bivers in Canara and Malabar, preferring the deepest pools, Longest specimen obtained 



O Jj Jl 



