520 SURGEON F. DAY ON INDIAN FISHES. [Nov. 11, 
Jerdon, who obtained them at Purneah. He informs me “its 
habitat is not mountain-streams, but rivers in the plains of Northern 
Bengal.” 
TRICHOGASTER FASCIATUS, Bloch. 
I obtained a large number of specimens of this species from the 
Calcutta market, and was enabled to form a complete series showing 
how the preorbital changes with age. At 3 inches the whole of its 
lower margin is serrated; at about 33 inches the serrations become 
mere denticulations, fewer in number and wider apart; at 4 inches 
some of the specimens have the preorbital entire. 
This species is given as T'richopodus colisa by Hamilton Buchanan, 
and figured at pl. 15. f. 40. The original drawing is marked 
Trichopodus beje; it may therefore be safely assumed that these two 
names belong to one and the same species. 
Amongst the MS. drawings are beautiful coloured figures of :—the 
Tvichogaster lalius, H. B., marked T. ruber ; Trichogaster chuna, 
H. B., marked 7. vittatus; Trichogaster sota, H. B., marked T. 
JSuscus; Trichogaster cotra, H. B. marked 7’. cerulescens. 
TRICHOGASTER LALIUs, H. B. 
> 
D. 16/8. P. 9. Vi 1. A. ga. OC. 16.) La. 124-26. 
Preorbital denticulated, also the horizontal margin of the pre- 
opercle, the teething becoming gradually coarser posteriorly. 
Lateral line either absent or only just visible for a few scales. 
Fourteen rows of scales between the dorsal and anal fins. 
This lovely little fish is the most beautiful amongst the numerous 
species of freshwater fishes I have ever seen. It is vertically banded 
with scarlet and light blue, each scale having one half of each colour. 
The vertical fins are banded with scarlet dots. I kept four dozen 
of this species in my rooms in Calcutta for six weeks, hoping, but in 
vain, to get a ship captain to convey them to the Zoological Society’s 
Gardens. 
TRICHOGASTER CHUNA, H. B. 
DelsilsncPaligoNee. Al SG, Ao, Td 20. 
Preorbital and preopercle serrated. 
Lateral line only a puncture on a few scales. 
Colours. A black band from the eye to the end of the caudal fin. 
Only one specimen, an inch long, is in the Museum: it may be 
a variety of the last; but more specimens are required to decide. 
There are several interesting specimens amongst the Ophiocepha- 
lide in this fine collection, a few of which deserve a passing notice. 
OpuHiocEerHALus GAcHNA, H. B. (variety). 
Bure) De Sf cde Soap, AG. 
The body is banded, and has a general orange tinge. None of the 
teeth are enlarged. The pectoral fin reaches to above the anal, and 
