MICROSICYDIUM 299 



Kolambugan, Lanao Province, Mindanao. It lives in stony, 

 brawling hill creeks, where numbers of specimens were seen. 

 It is difficult to secure, as it slips into crevices between the 

 rocks at the least sign of danger. It is evidently related to 

 Sicydium elegans Steindachner, from the Society Islands, but 

 is separated by differences in the scalation, fins, and color. 

 Formosum, beautiful. 



154. MICROSICYDIUM PULCHELLUM sp. nov. 



PLATE 23, FIG. 4 



Dorsal VI, 1-9; anal I, 10; there are 30 scales in a longitu- 

 dinal series, 9 in a transverse series, and 8 before first dorsal. 



The depth of the slender, elongate body 6.4 times in length, 

 the dorsal and ventral profiles nearly horizontal and parallel; 

 the head rather short, 4.7 times in length, its breadth 1.58 times 

 in its length and 1.26 times its own depth; the snout short, 

 blunt, wide, steeply descending to its tip, concave, 4 times in 

 head; the eyes very high up, dorsolateral, a little longer than 

 snout, 3.77 times in head ; the interorbital breadth equals length 

 of snout, the mouth small, slightly oblique, the posterior angle 

 of maxillary beneath anterior part of eye; the upper jaw has 

 a single row of small, immovable, closely set, colorless teeth 

 with brownish tips; the lower jaw has a pair of hooked canines 

 near symphysis, and fastened to lip is a horizontal row of slen- 

 der, colorless teeth projecting well beyond its margin; the large 

 ctenoid scales become cycloid in front of first dorsal and extend 

 as far as above middle of opercle; the dorsals far apart, the 

 third spine of first dorsal longest and equal to 0.88 of the depth, 

 1.54 times in head, the spines of first dorsal falling far short 

 of second dorsal when depressed; the anterior rays of second 

 dorsal longest, 0.9 the depth, and lacking much of reaching 

 caudal when depressed; the anal similar to second dorsal but 

 lower, its longest ray but 0,8 the depth; the caudal round 

 pointed, 1.1 times head and 4.2 times in length; the pectoral 

 long, pointed, 1.6 times depth, 1.18 times head, and 4 times in 

 length; the ventrals broad, rounded, 0.5 the length of pectoral. 



The color in alcohol uniform pale sandy yellow, lighter under 

 head; a broad, dark brown band passes around snout on upper 

 lip and extends back below eye to base of pectoral where it 

 terminates in a darker blotch; beneath pectoral it continues as 

 a broader brown band to base of caudal ; beginning behind eye 



