281 



portion with white dots. Pectoral and caudal often with brown 

 dots. 



Hab. Bed Sea, seas and coasts of India, ascending estuaries and 

 tidal rivers, also found at the Andamans, in the Malay Archipelago, 

 and Pacific islands. 



1074. (2.) Periophthalmns schlosseri. 



Gobius schlosseri, Pall. Spic. viii, p. 3, t. 1, figs. 1-4. 

 Periophthalmus schlosseri, Day, Fish. India, p. 304, pi. Ixvi, fig. 4 

 (see synon.). 



D.0-15 | 1/12. P. 9. V. 1/5. A. 1/12. C. 12. L.I. 55. L.tr. 11/12. 



Length of head 4 to 4|, of caudal fin 5 to 6, height of body 5 to 6 

 in the total length. Eyes high up, diameter 4| to 4| in length 

 of head, 1| diameters from end of snout, and | of a diameter apart. 

 Teeth front six in premaxil lanes the longest. Fins the first 

 dorsal fin may be entirely absent, composed of very short spines, 

 or of moderate development, or the anterior spine elongate in 

 the males. Ventrals united in their basal third or free. Colour 

 when alive, brownish banded with emerald-green spots, most dis- 

 tinct on the head, but in certain lights all over the body. First 

 dorsal black, becoming bluish above, and edged with white, a scarlet 

 band along the middle with a white dot between each ray. Second 

 dorsal the same, but the base lighter and spotted ; anal edged with 

 white. In the male the first dorsal fin has a black band, becoming 

 cobalt externally and with a scarlet edging. 



Hab. Coasts and large tidal rivers of Bengal, Burma, Andamans, 

 the Malay Archipelago and beyond ; attaining at least 9 inches 

 in length. 



7. Genus BOLEOPHTHALMUS, Cuv. & Val. 



Branchiostegals five ; pseudobranchiae ; a slit behind the fourth 

 gill. Gill-openings narrow. Body subcylindrical ; head oblong. 

 Eyes very prominent, situated close together, the outer eyelids 

 well developed. Cleft of mouth nearly horizontal, the upper jaw 

 sometimes slightly the longer. Teeth in a single row, the anterior 

 in the upper jaw enlarged and stronger than the others ; those in 

 the lo\ver jaw in a single horizontal ro\v, of about equal size and 

 having a pair of posterior canines near the symphysis. T\vo dor- 

 sal fins, the anterior with fh e flexible spines ; the second with 

 many rays equalling or exceeding those in the anal ; pectoral with 

 its basal portion muscular and generally free ; ventrals more or 

 less united: caudal with its inferior edge obliquely truncated. 

 Air-bladder present or absent. Scales when present rudimentary 

 or small, generally largest posteriorly. 



Geographical Distribution. Coasts of tropical Indo-Pacific, 

 ascending tidal rivers. 



It should be remarked that although the eyes are very promi- 



