AMBLYGOBIUS 229 



zontal band, the remainder of the fin blackish brown ; the second 

 dorsal dark brown, vaguely crossbarred by two rows of pale 

 spots ; the caudal light brown, with crossbars of blackish brown ; 

 the anal light brown with a blackish margin; the pectorals are 

 the color of body ; the ventrals brown, the middle blackish brown. 



Here described from the type and only specimen, 31 milli- 

 meters long, collected by me in a tide pool on the Martin ranch, 

 Siasi, Sulu Province. 



Inornatus, unadorned. 



109. AMBLYGOBIUS PERPUSILLUS (Seale) 



Rhinogobius perpusillus SEALE, Philip. Journ. Sci. A 4 (1909) 534. 



Dorsal VI, 1-13 ; anal I, 13 ; there are 56 scales in a longitudi- 

 nal series, about 20 in a transverse series, and 28 before the 

 first dorsal. 



The body somewhat obiong, laterally compressed, the dorsal 

 and ventral outlines about equally curved, the depth 4 times, 

 the rather bluntly pointed head 3.85 times in length; the snout 

 4 times in head, the eye a little smaller, 3.85 times in head; the 

 interorbital broad, equal to snout; the mouth oblique, the lower 

 jaw very slightly projecting, the posterior angle of maxillary 

 under anterior margin of pupil; the teeth in two rows in each 

 jaw, those of outer row enlarged, curved, the outer ones in 

 lower jaw projecting; there is a large recurved posterior canine 

 on each side of lower jaw; the whole body covered with finely 

 ctenoid scales, those on nape much smaller and extending to 

 eyes; the upper part of opercle has about three rows of very 

 small scales, the rest of the head naked ; the first dorsal elevated, 

 the spines nearly uniform in length, twice in head; the dorsal 

 and anal of similar shape, the posterior rays longest, 1.5 times 

 in head ; the depth of caudal peduncle twice in head ; the slightly 

 rounded caudal and round-pointed pectoral each about equal 

 to length of head; the ventrals pointed, their length 1.2 times 

 in head. 



Color in life a distinct whitish with a slight wash of yellow, 

 with three very dark brown stripes on each side, the first from 

 interorbital to dorsals and along their base, the second from 

 tip of snout to caudal, running along top of caudal peduncle, the 

 third a wide, heavy band from around lower lip across cheek 

 and upper base of pectoral to middle of caudal, where it ends 

 in a black spot on the rays of the middle of base; the lower 

 half of body uniform whitish, without marks; the dorsal 

 whitish crossed by a dark band on upper third ; the soft dorsal 



