FAMILY, XXVII-GOBIID^. 289 



tlie longest and much more tlian the second, the hind rays of which equal the height of the body and reach the 

 base of the caudal : anal similar to second dorsal. Pectoral as long as the head and half longer than 

 the ventral. Caudal pointed, its central rays being the longest. Scales — ctenoid, extending as far forwards as 

 the orbits, also on the cheeks and opercles. Eleven rows anterior to the dorsal fin : nine between the origins of 

 the second dorsal and anal. fins. Colov/rs — olive, spotted all over with rusty, fin-rays yellow, barred and dotted 

 with purplish red. Anal with a yellow margin and sometimes with transverse purplish-red streaks. 



Habitat. — Andamans to the Malay Archipelago : it appears to prefer brackish water. The specimen 

 figured (life-size) is from the Andamans. Genus AcentrogoMus, Bleeker, MSS. 



13. Gobius Bleekeri, Plate LXII, fig. 5. 

 Day, Proc. Zool. Soc. 1868, p. 195. 

 B. V, D. 6 1 1 P. 16, V. 1/5, A. 1/8, C. 13, L. 1. 32, L. tr. 11. 



Length of head 1/6, of caudal 1/6, height of body 1/5 of the total length. Uyes —directed upwards and 

 slightly outwards, closely approximating superiorly, diameter 3f in length of head, 3/4 of a diameter 

 from end of snout. Height of head equal to its length excluding the snout. Lower jaw the longer, cleft of 

 mouth oblique, commencing opposite the middle of the eyes, the maxiUa reaches to beneath the anterior half 

 of the orbit. Teeth — in villiform rows having an external enlarged row in either jaw, with the outer on 

 either side in the mandibles being a recurved conical canine. Fins — dorsal spines slender, with filamentous 

 prolongations, and higher than the second dorsal. Pectoral 1/4 longer than the head, the ventral does not reach 

 the origin of the anal : anal and second dorsal similar : caudal wedge-shaped. Scales — ctenoid, extending as 

 far forwards as the posterior margin of the orbit, none on the cheeks or base of pectoral, sixteen rows anterior 

 to the dorsal fin which are rather smaller than those on the remainder of the body. Eleven rows 

 between the bases of the second dorsal and anal. Colov/rs — olivaceous, clouded with darker blotches and 

 irregular spots, very fine black spots on the scales : first dorsal dusky in its upper half, with a large bluish spot 

 extending from the first to the fourth spine, and a light mark along its base from thence to the end of the fin, 

 the spines orange: second dorsal studded with black points most numerous towards its base, its first 

 half minutely edged with white, and some blue spots on its posterior half: anal covered with minute black 

 points : pectoral orange, with a blue ocellus on the upper half of its base, its lowest ray deep blue : ventral 

 blackish. Caudal nearly black, having from three to four rows of bluish- white spots between each ray. 



Eabitat. — ^Madras, to 2|- inches long. Genus Aomtrogqhius, Bleeker, MSS. 



14. Gobius zonalternans. 



B. V, D. 6 I i, P. 17,, V. 1/5, A. h C 13, L. 1. 27, L. tr. 6. 



Length of head 4i, of caudal 4J, height of body 6i in the total length. Eyes — diameter 3|- in length of 

 head, 1/2 a diameter from end of snout, and 1/6 of a diameter apart. Greatest width of head equals half its 

 length, and its height equals its length excluding the snout. Lower jaw slightly the longer, the maxilla reaches 

 to below the first third of the eye. No warts or barbels on the head. Teeth— in. several cardiform rows, 

 directed rather inwards, and having an external enlarged row, the outer of which in the lower jaw is a large 

 recurved canine, l^'ms— spines of first dorsal very thin having filamentous terminations, and much higher than 

 the body : last dorsal and anal rays long and reach the caudal fin. Pectoral and ventral reach the anal. 

 Caudal pointed. Scales — cycloid, very small ones before the first dorsal fin, and not extending to so far as the 

 hind edge of the eyes. Golows—a, large blue spot surrounded with black on the opercle : body with 

 brown bands going from the dorsal to the abdominal surface, they are of an angular form, the angle directed 

 backwards : a dark band over the free portion of the tail just before the base of the caudal fin, which has a 

 black basal band, whUst its outer half is gray. First dorsal with* a white band along its base, and a dark 

 blotch between the last dorsal spines. Other fins dark gray. 



Eabitat.— Madras : two specimens up to If inches, from brackish water (Adyair river). 



15. Gobius biocellatus, Plate LXIII, fig. 8. 

 Cuv. and Val. xii, p. 73 ; Giinther, Catal. iii, p. 20 ; Day, Proc. Zool. Soc. 1868, p. 154. 

 Oobvus Oelebicus, Cuv. and Val. xii, p. 74 ; Bleeker, Bant. p. 318. 

 Oohviis suUitus, Cantor, Catal. p. 181 ; Giinther, Catal. iii, p. 24. 

 GephalogoUm sublitus, Bleeker, Gobioides, p. 'S2^^Glossogobius sublitus, Bleeker MSS. 



B. V, D. 6 I i P. 19, V. 1/5, A. i C. 15, L. 1. 28-30, L. tr. 7-8. 



Length of head 4 to 4^, of caudal 6, height of body 6 in the total length. Eyes—high up, diameter 1/4 

 to 1/5 of length of head, 1 to If diameters from end of snout, 1/4 of a diameter apart. Height and breadth of 

 head equal, and as long as the head behind the middle of the eyes. Cleft of mouth rather oblique, lower 

 jaw the longer : the maxilla reaches to below the middle of the orbit, nearest point from eye to angle 

 of preopercle 1/2 longer than the snout. A large open pore in the posterior third of the interorbital_ space. 

 Several rows of fine warts on the cheeks. Teei^— several cardiform rows in the centre of the upper jaw directed 

 inwards, becoming two laterally, the outer one enlarged: a narrow cardiform band in the lower jaw, 

 also directed inwards and becoming two rows lateraUy, irrespective of these is an outer enlarged row and about 

 ten enlarged teeth in front of the lower jaw, the external of which is slightly recurved and canme-like m large 



