1909.] FISHES OF THE FAMILY AXABANTID^. 779 



2. Betta UNIMACULATA. 



Parophiocephalus unimaculatus Popta, !Notes Leyden Mns. xxv. 

 1905, p. 184, and xxvii. 1906, p. 10, pi. i. fig. 1. 



Depth of body 4 in the length, length of head 31. Snout as 

 long as eye, the diameter of which is 4^ in the length of head ; 

 interorbital width 2| in the length of head. Maxillary extending 

 to below posterior nostril or anterior edge of eye. Dorsal 9. 

 Anal 30. 33 scales in a longitudinal series. Olivaceous ; a 

 blackish spot at the base of the caudal fin ; fins dusky, the dorsal 

 and caudal with series of small blackish spots. 



Hab. Borneo. 



A single specimen, 70 mm. in total length, from the River 

 Bongon, N. Borneo, collected by Mr. A. Everett. 



Popta"s description is based on numerous specimens from the 

 Howong and Kajan Rivers, 38 to 82 mm. in total length. She 

 gives the following numbers : — Dorsal 7-8. Anal 27-30. 32 

 scales in a longitudinal series. 



3. Betta bellica. 



Betta bellica Sauvage, Bull. Soc. Zool. France, ix. 1884, p. 217, 

 fig. 



Depth of body 4 in the length, length of head about 4|. 

 Dorsal 10. Anal 37 (34 according to the figure). 35 scales in 

 a longitudinal series. Anterior half of each scale emerald-green, 

 the rest bronze ; fins dusky. 



Hab. Perak. 



Total length, 90 mm. 



4. Betta akarensis, sp. n. (Plate LXXYII. fig. 3.) 



Depth of body 3| in the length, length of head 3. Snout 

 shorter than eye, the diameter of which is 31 in the length of 

 head and nearly equal to, the intei'orbital Avidth. Maxillary 

 extending to below the posterior nostril. Dorsal 8. Anal I 27. 

 31 scales in a longitudinal series. Brownish, with darker stripes 

 along the series of scales ; a dark longitudinal band on the head, 

 passing through the eye ; fins dusky. 



Hab. River Akar, Sarawak. 



A single specimen, 52 mm. in total length, collected by 

 Dr. 0. Hose. 



5. Betta pugnax. 



Macro'podus pugnax Cantor, Cat. Malay Fish. p. 84, pi. ii. 

 figs. 1-3 (1850). 



Betta pugnax Giinth. Cat. Fish. iii. p. 389 (1861). 



Depth of body 3| in the length, length of head 3 to 3:^. 

 Snout shorter than eye, tlie diameter of which is 3| in the length 

 of head ; interorbital width 21- in the length of head. Maxillary 

 extending to below posterior nostril or anterior edge of eye. 



