278 Annals of the Carnegie Museum. 



58. Macropodus filamentosus sp. nov. (Plate LII, Fig. 2). 



Head 3.2 in length; depth 3; D. 13, 8; A. 18, 15; P. 10; V. I, 5; 

 width of head 1.66 in its length; eye 3.5 in head, interorbital space 

 2.75; snout 3.5; twenty-eight scales in a lateral series, twelve scales in 

 an oblique series between origin of dorsal and the root of the ventral, 

 six scales between orbit and the posterior end of operculum. 



Body oblong, compressed, tapering posteriorly, dorsal and ventral 

 profiles equally arched; tail slightly turned downward (probably 

 distorted) ; head moderate, triangular, entirely covered with scales, 

 top convex; snout short, pointed anteriorly, interorbital space rather 

 broad, slightly convex; operculum with no spine; minute denticulations 

 at the pre-orbital and the angle of the pre-operculum; mouth anterior, 

 oblique, its angle not reaching the orbit; both jaws with a band of 

 fixed, villiform teeth, the lower jaw slightly protruding; nostrils separ- 

 ated, the anterior in a short tube, situated nearer the lip than orbit, 

 the posterior nearly in contact with eye. 



Dorsal fin elongate, inserted midway between tip of snout and base 

 of caudal, soft rays much longer than the spines, fifth ray filamentous, 

 reaching the middle of caudal; ventral with one spine and five rays, 

 first ray filamentous, reaching anterior two-thirds of the base of anal; 

 anal fin very long, its origin in advance of that of dorsal, posterior end 

 of the base nearly in contact with the base of caudal, soft rays longer 

 than the spines, middle rays longest, seventh to ninth rays filamen- 

 tous, reaching beyond the end of dorsal filament; caudal fin gradually 

 tapering posteriorly, middle rays elongated, forming a bundle of 

 delicate filaments, not forked. 



Scales moderate, ctenoid; with no lateral line; head provided with 

 many mucous pores, four along the posterior margin of the upper lip, 

 one on each side behind the posterior nostril, one in contact with the 

 hind border of the orbit, three on the posterior part of pre-operculuni; 

 bases of the dorsal and anal covered with scales. 



Color in alcohol pale grayish white, with about eleven brownish 

 cross-bars on the sides and one of the same color on the base of the 

 caudal; a dark brown round spot at the extremity of the operculum; 

 postorbital space with traces of two brown streaks; membrane of the 

 soft dorsal and upper half of the caudal speckled with l)lack; base of 

 the anal brownish, the rest of the fin whitish. 



Length of the body excluding the caudal 43 mm. (caudal fin about 

 33 mm. long). 



