226 GOBIES OF THE PHILIPPINES 



107. AMOYA BREVIROSTRIS (Gunther) 



PLATE 18, FIG. 1 

 Gobius brevirostris GUNTHER, Cat. Fishes Brit. Mus. 3 (1861) 41. 



Dorsal VI, 1-10; anal I, 9; there are 46 to 48 scales in a 

 longitudinal series and 16 in a transverse series. 



The elongate, rather plump body laterally compressed, the 

 dorsal and ventral profiles nearly horizontal and parallel, the 

 depth 5.2 to 5.4 in the length; the head convex above, broader 

 than trunk, 4 to 4.1 times in length, its breadth equal to or 

 slightly exceeding its depth and 0.6 to 0.7 of its own length; 

 the snout broad, rounded, convex, equal to or exceeding eye, 

 3.25 to 3.8 in head; the mouth terminal, slightly oblique, the 

 jaws subequal or the lower very slightly prominent ; the posterior 

 angle of maxillary may extend back to a point beneath pupil ; 

 in each jaw are two rows of teeth, the outer enlarged, with a 

 lateral pair of canines in lower jaw; the eyes very high up, 

 dorsolateral, 4 times in head, close together, the interorbital 

 to 0.25 an eye diameter; the eyes in forward half of head, the 

 distance from tip of snout to posterior margin of eye less than 

 postorbital length of head ; the body covered with ctenoid scales, 

 largest posteriorly, those along dorsal base much smaller and 

 becoming minute and disappearing above opercles; the head 

 and nape entirely naked and a central naked area extends back 

 to base of dorsal ; tiny scales on base of pectoral and on breast ; 

 conspicuous pores on head as follows: On snout beside pos- 

 terior nostril, two on interorbital, two behind eye, four on 

 supraopercular groove, and three on posterior margin of pre- 

 opercle; two parallel longitudinal rows of minute papillae across 

 middle of preopercle, and a perpendicular and a transverse row 

 on opercle; the first dorsal about equal to depth, the tip of 

 second spine elongated; the second dorsal a little lower than 

 the depth, the posterior ray longest and extending upon caudal 

 when depressed ; the anal still lower, the posterior ray not quite 

 reaching caudal when depressed; the somewhat pointed caudal 

 longer than the head, 3.25 to 3.6 times in length, the acces- 

 sory rays well developed and extending forward upon the broad 

 caudal peduncle, the depth of which is 0.75 or 0.8 of its own 

 length, and contained about twice in head ; the pointed pectoral 

 a trifle shorter than head, its tip not extending to a point above 

 anus; the ventrals broad, thin, much shorter than the distance 

 to anus, 0.8 to 0.9 of the depth; in males the anal papilla is 

 very small and slender, in females, subglobose. 



