2 NEW SPECIES OF ATROBUCCA (SCIAENIDAE) FROM THE BAY-OF-BENGAL

Two new species of the sciaenid genus Atrobucca are described from the Bay of Bengal; A. antonbruun, distributed from Burma to the east coas t of India and A. bengalensis from Sri Lanka. Both species differ from all other congeners in having weakly differentiated teeth on the lowe r jaw. A. antonbruun is distinguished from A. bengalensis by having us ually X first dorsal fin spines (vs IX), 27-29 dorsal fin soft rays (v s 30-31), usually 17-18 pectoral fin rays (vs 19), usually 13-14 lower gill rakers (vs 11), cycloid scales on the anterior half of the body (vs ctenoid), and swimbladder appendages strongly enveloping the bladd er (vs weakly enveloping).