36i 



of the scales, on one continuous series of scales. The middle one 

 runs from base of caudal, where it often begins with a round patch, 

 through eye to snout, from where it is usually continued as 

 a dark band along the chin to the other side. The superior 

 band commences on operculum and runs to caudal, the inferior 

 from below base of pectoral to caudal, anteriorly usually 

 continued as a series of a few black points to hindborder of 

 eye. A transverse band crosses the isthmus and connects the 

 lower border of the eyes, it may be missing or obsolete. In 

 Sumatran species the underside of head is more or less blackish. 

 Pectorals near base with or without a transverse band. Inner 

 rays of ventrals blackish, anal and caudal with or without a 

 black margin, sometimes with one or more series of elongate 

 spots. Dorsal with or without dark longitudinal points, which 

 may constitute longitudinal bands. Length 48 mm., by excep- 

 tion 55 mm. 



Habitat: Singapore; Sumatra (Deli!, Upper Langkat!, 

 Talembang, Muara Kompeh); Banka; Biliton ; Java (Buitenzorg!, 

 Tjipanas!, Ponds near Trogon!, Tjintjiruan 1600 M. high!, 

 Bandung!, Ambarawa 1500 feet high). 



In brooks and ponds. 



Note: V. Martens (Preuss. Exp. nach Ost. Asien, 1876, 

 p. 395) and KaROLI (Termeszetr. Fuzetek V, 1882, p. 26) 

 mention this species also from Borneo, even from Siam, but 

 wc doubt the correctness of these statements. The specimen 

 described by Regan as Betta inacrophthabna and presented 

 by Prof. Peters to the British Museum as Betta trifasciata, 

 came from Singapore. 



8. Betta rubra Perugia. 



Betta rubra Perugia, Ann. Mus. Civico Geneva (2) XIII. 1893, p. 242. 

 Betta rubra Tate Regan, Proc. Zool. Soc. London 1909, p. 781. 



D. 1.7; A. 3.21 ; L.l. 30. 



Rostro-dorsal profile slightly convex. Height 3^^^, head 3'/4- 

 Diameter of eye 3^/3 — 4, longer than snout, 1.7 in postorbital 

 part of head and about equal to interorbital space, which goes 

 3 '/.J in head. Maxillary extending to below the posterior nostril. 

 Origin of dorsal midway between head and base of caudal, 

 separated by 28 praedorsal scales from snout, opposite to i6ih 

 lateral scale. Penultimate dorsal ray produced and reaching 

 caudal. Anal with a basal sheath, anteriorly of one, posteriorly 



