312 



GOBIES OF THE PHILIPPINES 



mouth horizontal, the wide upper lip with three clefts, the middle 

 one very narrow and short with a large bulbous papilla, the 

 lateral ones shaped like a sac, or alveolus, each with a thick, 

 tubercular papilla beneath it, the inner margin of lip tuber- 

 culate; the posterior angle of maxillary extends beneath pupil 

 of eye ; the teeth of upper jaw have the central cusp very large, 

 broad, inward-curved, the tip rounded in face view; the lateral 

 cusps almost or quite as long as the middle one, incurved, very 

 acute (see text fig. 4) ; the horizontal teeth of lower lip very 

 slender, sharp-pointed, widely spaced ; 

 from three to six stout, curved teeth 

 on each side of lower jaw, all smaller 

 than the large symphysial canines; 

 the scales of almost uniform size, 

 those on caudal peduncle and before 

 first dorsal somewhat smaller, only 

 the last few anterior rows on nape 

 much reduced in size; the dorsals 

 well separated, the first moderately 

 elevated, the membrane extending to 

 tip, the third spine longest, equal 

 to depth; the second dorsal low, 1.3 

 to 1.6 times in depth, 1.5 to 1.9 times 

 in head, angulate, pointed posteriorly, 

 the last ray barely reaching caudal 

 base; the anal similar but a little 

 lower, the anterior rays longest, 1.6 

 to 2 times in depth and 2 to 2.25 

 times in head, the pointed posterior 

 ray usually falling short of caudal 

 base when depressed; the depth of 

 caudal peduncle equals its length; 

 the bluntly rounded caudal equals 

 head; the pectoral has an elongate round-pointed tip, approxi- 

 mately equal to depth, 1 to 1.3 in head; the ventrals broader than 

 long, 1.75 to 1.85 in head and 2.75 to 3 times in distance to anal 

 papilla; this is very small, short, and thick in males; larger, 

 subglobose, with notched tip in females. 



The color in alcohol dull dark brown, paler beneath and 

 whitish under head and on belly, with seven broad, vertical 

 crossbands, the last three most distinct, the first before first 

 dorsal; a faint indistinct black bar runs along middle of side 

 to tip of caudal ; a narrow blackish band near upper and lower 



FlG. 4. Sifyopterus extraneus 

 op. nov. ; left side of two teeth. 



