3858.] Proceedings of the Asiatic Society. 271 



becoming higher on its posterior half; its spinous and soft rays not easily 

 distinguishable, and the second and third rays are a little elongated in 

 the males (at least of the species described, which also has a small pal- 

 mated appendage over each eye). 



A. expansa, nobis, n. s. 



D, 36._ V. 2Q.—P. 14.— C. 11. 



Colour dark plumbeous above, with slight pale mottled transverse bands 

 on the sides : the gill-covers studded with minute dusky specks : dorsal 

 fin dusky ; the ventral surface and anal fin whitish, with a dark spot on 

 each ray of the latter : membrane of the tail colourless, with conspicuous 

 black rays ; the caudal rays extending beyond the membrane : the tail 

 having a rounded form, and being almost continuous below with the anal 

 fin. In a young individual, the dorsal fin is pale, with the exception of 

 the first two rays, which are black. In adults the pectorals and posterior 

 half of the dorsal are marked (more or less distinctly) like the caudal 

 black rays on colourless membrane : ventrals pale. Length 3-f in. 



Salarias olivaceus, nobis, n. s. One of the crested species of this 

 genus, having also a small appendage over each eye. 

 D. 12-19.— V. 22.— P. 13.— C. 12. 



General colour dark olive-green, paler below, and also on the hinder 

 half of the body, where inclining to dull reddish : a few obscure dark 

 spots along the back, at base of the dorsal fin, not visible in all specimens, 

 and some minute black specks also towards the tail. Length 3^ in. 



Periopthalmus fuscatus, nobis, n. s. Pectorals rather large : ven- 

 trals deeply divided : anterior dorsal moderately high, with no elongated 

 filaments : caudal pointed, and as if obliquely truncated below. 

 D. 12-13.- V. 11.— P. 11.— C. 17. 



Colour dusky leaden-brown above, obscurely mottled j the lower-parts 

 pale : the two dorsal and the caudal fins speckled with black ; the pec- 

 torals less distinctly so ; and the ventrals and anal spotless : on the gill- 

 covers are a few white specks ; and the sides of the body are obscurely 

 marked with numerous small black spots. Length 3£ in.* 



Gobius breviceps, nobis, n. s. A small nude-headed Goby, with the 

 eyes placed remarkably forward, imparting somewhat of a feline aspect 

 to the visage. Fins ordinary, or presenting no peculiar character. 



D. 6.— 1-9.— A. 1-8. 



Colour a pale red-brown, with a row of large blackish spots along the 



* We have a small Periopthalmus from Mergui, which, in its colouring, ap- 

 proximates the P. ARGENTrLiNEATUS, C. and V., but has merely a slight infus- 

 cation of the first dorsal. Z>. 9-13.— V. 12. If distinct, P. scintillans, nobis. 



