216 GOBIES OF THE PHILIPPINES 



band of violet-black on the membranes; above this the mem- 

 branes are specked with minute reddish violet dots, the rays 

 all colorless; the anal, caudal, and ventral membranes also 

 faintly dotted with similar minute specks. 



HI. CHONOPHORUS MELANOCEPHALUS <Bleker) 



PLATE 17, FIG. 1 



Gobius melanocephalus BLEEKER, Verb. Bat. Gen. 22 (1849) 33. 

 Gobius personatus BLEEKER, Verb. Bat. Gen. 22 (1849) 34; Nat. 



Tijd. Ned. Ind. 1 (1851) fig. 4. 

 Gobius grammepomus BLEEKER, Verb. Bat. Gen. 22 (1849) 34; GiJN- 



THER, Cat. Fishes Brit. Mus. 3 (1861) 64; BOULENGER, Ann. & Mag. 



Nat. Hist. VI 15 (1895) 185. 

 Awaous personatus BLEEKER, Contrib. faune Ichthy. llle Maurice, 



Verb. Akad. Amsterdam 18 (1879) 17. 

 Gobius litturatus Heckel MS., STEINDACHNER, Sitzungsber. Akad. Wiss. 



Wien 42 (1861) 289, pi. 1, figs. 4 and 5. 



Local names. Bukto in Ilocano; bnnog and totot in Abra 

 Province; biang bato (rock goby) in Tagalog; batog in Bicol. 



Dorsal VI, 1-9 or 10; anal I, 10; there are from 50 to 56 

 scales in a longitudinal series. 14 to 16 in a transverse series, 

 and 14 to 20 in front of the first dorsal. 



The plump, wedge-shaped body laterally compressed, with a 

 large, very broad head, wider than body; the greatest depth at 

 nape above gill opening and 4.6 to 5.7 times in length; the head 

 from 2.9 to 3.8 in length ; the snout long, strongly convex, 2.3 to 3 

 times in head and equal to or but little shorter than postorbital 

 length of head ; the eye rather small, 5 to 6 times in head, 2.5 to 3 

 times in snout; the interorbital space equals or nearly equals 

 eye ; the mouth slightly oblique with a very large, thick, overhang- 

 ing upper lip and rather weak lower jaw; the physiognomy of 

 snout and mouth very characteristic ; the maxillary usually does 

 not extend to eye, but may reach beyond its anterior margin ; the 

 scales on nape extend nearly to eyes and are smaller than those 

 on sides; the rest of the head naked except for a few scales on 

 upper part of opercle ; a large pore above each eye and a larger 

 one in the central area behind eyes ; the tips of the spines of first 

 dorsal very little elongated, occasionally (in old males?) equal to 

 depth of body ; the second dorsal and anal of similar outline, the 

 anal lower than second dorsal, and both lower than body, their 

 posterior rays longest but not reaching caudal in any of my spec- 

 imens: the caudal broad, nearly truncate with rounded angles, 

 its length about 0.75 that of head ; the ventrals are broad, with a 



