SCARTELAOS 325 



completely united; the narrow restricted gill openings begin 

 about opposite middle of pectoral base and extend very little 

 below it; the isthmus broad; branchiostegals 5. 



A small group of slender, half-burrowing mud dwellers, 

 confined to the coasts of tropical Asia and the Malay Archipelago. 



164. SCARTELAOS VIRIDIS (Buchanan Hamilton) 



PLATE 25, FIG. 2 



Gobius viridis BUCHANAN HAMILTON, Fishes Ganges (1822) 42, 366, 



pi. 32, fig. 12. 

 Boleophthalmus viridis CuviER and VALENCIENNES, Hist. Nat. Poiss. 



12 (1837) 160; GUNTHER, Cat. Fishes Brit. Mus. 3 (1861) 104; 



DAY, Fishes of India (1878) 307, pi. 66, fig. 5. 

 Scartelaos viridis BLEEKER, Esq. Syst. Gobioides, Arch. Neerl. Sci. 



Nat. 9 (1874) 328; JORDAN and SEALE, Proc. U. S. Nat. Mus. 28 



(1905) 794, fig. 12. 

 Boleophthalmus aucupatorius RICHARDSON, Voy. Sulphur, Ichthyology, 



part 3 (1845) 148, pi. 62, figs. 1-4. 



Dorsal V, 1-25; anal I, 25. 



The body very low, elongate, subcylindrical, the dorsal and 

 ventral profiles nearly horizontal but tapering gradually toward 

 each other from head to caudal, the depth 8.75 to 10 times in 

 length ; the head low, broad, nearly rectangular, 4.3 to 4.5 times 

 in length, much wider than trunk, its breadth greater than its 

 own depth and about 0.1 more than the depth of body, 1.8 to 2 

 times in head; the convex snout broadly rounded, 3.6 to 4 times 

 in head; its lower margin ends in a broad, loose, lunately lobed 

 flap, with an elongate nipplelike extension on each side below 

 eye; the eyes very close together, the upper lid like the skin of 

 head, the wide lower lid whitish, the pit in which they lie when 

 not elevated large, the diameter of eye about 1.4 times in snout 

 and 5.75 to 6.5 times in head; the large mouth low, horizontal, 

 the lower jaw shorter than the upper, the posterior angle of 

 maxillary beneath hind margin of eye or beyond; there are 

 twelve or fourteen prominent, pointed, downward-projecting 

 teeth in upper jaw, with several much smaller teeth posterior 

 to them; in lower jaw there are twenty-four to thirty small, 

 pointed, horizontal or nearly horizontal teeth ; the curved canines 

 behind symphysis much larger than any of the other teeth; 

 beneath point of chin a small barbel, and running back on each 

 ram us of jaws a row of much smaller barbels; the minute but 

 readily visible scales of posterior region become much smaller 

 and more widely spaced anteriorly, usually disappearing by the 



