706 MR. F. DAY ON NICW INDIAN FISHKS. [Juiie 2", 



Panchax argevtkus, sp. nov. 



B. iv. D. 6. p. 15. V. C. A. 20. C. 13. L. 1. 27. L. tr. 11. 



Length of specimens from ^ to ly\ inch. 



Length of head nearly j, of pectoral j, of base of dorsal Jjj, of 

 base of anal f, of caudal ^ of the total length. Height of head ^, 

 of body 5, of dorsal fin i, of ventral g, of anal ^ of the total length. 



Eyes. Diameter |- of length of head, |- of a diameter from end of 

 snout, nearly 1 diameter apart. 



Teeth in a narrow villiform row, directed at first almost horizon- 

 tally, and bent near their extremities. 



Fins. Dorsal is situated over the last few rays of the anal, which 

 last commences midway between end of snout and termination of 

 the caudal fin, which is cut square. Ventrals, if laid forwards, just 

 reach to the opercles ; if in their natural position, they extend beyond 

 the vent to the first anal ray. 



Scales on the top of the head with smooth edges and not fes- 

 tooned ; those on chest much smaller than those on the body. 



Body very compressed ; back wide and flat. 



Colours. Of a dullish green along the back, becoming dirty white 

 along the abdomen. The back and also between the rays of the 

 anal and caudal fins finely dotted with black points ; otherwise the 

 fins are diaphanous. Eyes blue. 



This species, which appears never to grow to a large size, seems 

 allied to the Panchax ci/anojihthalmus, Blyth, which, however, is 

 said to have 22-23 anal rays. It differs from the Panchax (Poecilia) 

 latipes, Schleg., in the length of the head, and in the number of 

 the dorsal and anal rays, in tbe number of scales, and in the posi- 

 tion of the ventral fin. It may be the Panchax ni'clellandi, 

 Bleeker ; but as that species is only known from a drawing, it is 

 impossible to decide the question. 



Panchax rtjbrostigma, Jerdon. 



B. iv. D. 8. P. 15. V. 0. A. 14-15. C. 15. L.1.27. L. tr. 7. 



Length of specimens from ly-^ to ly*ij inch. 



Length of head ^, of pectoral \, of base of dorsal yly, of base of 

 anal \, of caudal y^j of the total length. Height of head \, of body \, 

 of dorsal \, of ventral \, of anal -1- of the total length. 



Eyes oval, f of length of head, \ of a diameter from end of snout, 

 1 \ diameter apart. 



Body elongated ; back moderately flat from the snout to the base 

 of the dorsal fin; sides compressed. 



Length of intermaxillaries in central line equal to about half the 

 diameter of the eye. The posterior extremity of the maxilla extend- 

 ing to beneath the centre of the orbit. Angle of prseopeiculum 

 rounded, but not produced. 



Teeth in both jaws villiform, recurved, and in a narrow band. 



Fins. Anal conmiences midway between snout and termination of 

 caudal fin. The dorsal begins over the last four anal rays. Caudal 

 wedge-shaped, its central rays the longest. 



