546 PHYSOSTOin. 



length of Lead, 1| diameters from the end of snout, and 2 apart. Dorsal profile more convex tlian that of the 

 abdomen. The greatest width of the head equals its length excluding the snout. Interorbital space convex. 

 Snout rounded and smooth, it scarcely overlaps the mouth which is of moderate width : no lateral lobe. Both lips 

 fringed, with two, three, or more rows of well-developed papillas internally : groove across the mandibles not 

 complete ; a cartilaginous covering internally to the lower jaw. Barbels — the rostral do not reach the orbit, 

 the maxillary extend to beneath its centre. Teeth — pharyngeal, ploun-h-shaped, 5, 4, 3/3, 4, 5. Fins — the 

 dorsal commences before the ventral, and much nearer to the snout, than to the base of the caudal, its upper 

 border is somewhat concave ; caudal deeply forked. Scales — 4 rows between the lateral-line and the base of 

 the ventral fin. Colours — grayish-yellow, deepest sujieriorly, every scale being darkest at its base. A dull 

 spot near the root of the caudal fin, and another ill-defined one near the commencement of the lateral- 

 line. Fins, yellownsh orange, dorsal darkest at its basal half. 



Habitat. — Sittoung and Billing in Burma. The largest specimen, out of seven, measm-ed six inches in 

 length. 



3. Osteochilus cephalus. 



Labeo cqjhalus, Cuv. and Val. xvi, p. 374, pi. 487. 



B. iii, D. leCfV), P- 20, V. 9, A. 9 (3/C), C. 19, L. 1. 40, L. tr. 7/7. 



Length of head 4^, of caudal 4^, height of body 4 in the total length. Eyes — 1/5 of length of head, 

 two diameters from end of snout. The dorsal profile is much more convex than the abdominal. Interorbital 

 space convex. The snout projects beyond the jaws, it is rather swollen and has many pores opening on its surface : 

 the mandible has a transverse free edge, with thick lip, both the upper and lower being fringed. Barbels — 

 one short maxillary pair. Fins — the dorsal commences midway between the snout and base of caudal, and in 

 advance of the ventrals, its upper border is concave. The anal laid flat reaches the caudal. Scales — 4^ rows 

 between the lateral line and base of ventral fin. Colours — greenish, with the base of each scale darkest. 



Habitat.— Pegu., attaining one foot in length. 



Genus, 11 — Daxgila, Cuvier and Valenciennes. 



Cyrene, sp. Heckel. 



Abdomen rounded. Snout moderately depressed and obtusely roimded. Mouth transverse, more or less inferior. 

 Lower jaw sharp, covered with a thin lip, and having a tubercle above the symphysis : upper lip fringed. Barbels 

 small, one maxillary and one mandibular pair. Pharyngeal teeth, 6, 4 or 3,2 or 3/2 or 3, 3 or 4, 5. Dorsal fin rather 

 long, without any osseous ray, and commencing in advance of the ventrals. Anal short, without a tiled row of scales. 

 Scales of large, small, or ynoderate size. Lateral-line continuous, passing to the centre of the base of the caudal fin. 

 Gill-rakers short. 



This genus might perhaps be considered as belonging to Cirrhina, merely differing in possessing a few 

 more rays in the dorsal fin. As however it does not appear to extend into India proper, it is more convenient 

 for the purpose of adverting to geographical distribution, to leave it as distinct, at least for the present. 



Geographical distribution. — From Burma to the ilalay Archipelago. 



SYNOPSIS OF SPECIES. 



1. Dangila Burmanica, D. 26-38, L. 1. 39-40, L. tr. 7/9. Burma. 



2. Dangila Berdmorei, D. 26, L. 1. 31, L. tr. 6/ — . Tenasserim Provinces of British Burma. 



1. Dangila Burmanica, Plate CXXXI, fig. 2. 

 Cirrhina Kuhlii, Day, J. A. S. of Beng. 1871, p. 133 (not Cuv. and Val.) 

 B. iii, D. 26-28 (^l-if^.), P. 16, V. 9, A. 7(|), C. 19, L. 1. 39-40, L. tr. 7/9. 



Length of head 7, of caudal 4^ to 5, height of body 4^ to 5 in the total length. Ei/es — diameter 3 in 

 the length of the head, 1 diameter from the end of snout, and 1^ apart. Dorsal profile more convex than that of 

 the abdomen. The greatest width of the head equals its length behind the middle of the eyes. Mouth 

 transverse, with the snout slightly depressed and rounded : upper lip fringed : a small tubercle inside the lower 

 jaw above the symphysis. Barbels — the maxillary pair as long as the eye, the rostral pair shorter. Teeth — 

 pharyngeal, 5, 4, 3/3, 4, 5. Fins — dorsal commences above the ninth scale of the lateral-line, its upper edge 

 concave, and its highest rays 4/5 of the height of the body. Pectoral nearly as long as the head and does not 

 reach the ventral. Upper caudal lobe the longer. Lateral-lino — 5 rows of scales between it and the base of the 

 ventral fin. Colours — silvery, some of the scales with dark spots at their bases forming rows, or horizontal 

 bands. Fins orange, the edges of the caudal stained. 



This fish is closely allied to Dangila Kuhlii, C. V., but appears to have a shorter head and less number of 

 scales between the dorsal fin and lateral-line. 



Habitat. — Moulmein and Tavoy (where it does not seem to be uncommon) : several specimens obtained 

 measured up to 10 inches in length. The example figured is 93 inches in length. 



2. Dangila Berdmorei. 

 Dangila Berdmorei, Blyth, J. A. S. of Bengal, 18G0, p. 162 ; Day, Proc. Zool. Soc. 1869, p. 554. 



