. Bulletin of the Natural History Museum (Zoology). DEN INTHY ANGART RETART IOP x pop QUAD Fig. 2 Lateral view of lower jaw and suspensorium of Anisochromis kenyae, RUSI 4906. mm SL, right side reversed. ANGART - angularticular; DEN - dentary: ECTPT - ectopterygoid; HYOM - hyomandibula; INTHY, interhyal; IOR interopercle; LIG - ligament between palatine and mesopterygoid; MESPT. mesopterygoid; METPT, metapterygoid; OP, opercle; PAL, palatine; POP. preopercle; QUAD, quadrate; RETART, retro- articular; SOP. subopercle; SYM, symplectic. Cartilage shown in coarse stipple. Scale bar = 1 mm. CH
. Bulletin of the Natural History Museum (Zoology). DEN INTHY ANGART RETART IOP x pop QUAD Fig. 2 Lateral view of lower jaw and suspensorium of Anisochromis kenyae, RUSI 4906. mm SL, right side reversed. ANGART - angularticular; DEN - dentary: ECTPT - ectopterygoid; HYOM - hyomandibula; INTHY, interhyal; IOR interopercle; LIG - ligament between palatine and mesopterygoid; MESPT. mesopterygoid; METPT, metapterygoid; OP, opercle; PAL, palatine; POP. preopercle; QUAD, quadrate; RETART, retro- articular; SOP. subopercle; SYM, symplectic. Cartilage shown in coarse stipple. Scale bar = 1 mm. CHL PCH. SMHL DHH' ACH' Fig. 3 Medial view of right side dentary and hyoid bar with associated ligaments of Anisochromis kenyae, RUSI 4906, mm SL. ACH, anterior ceratohyal; BR, branchiostegal rays; CHL, ligament extending between posterior and anterior ceratohyals; DEN, dentary; DHH, dorsal hypohyal; PCH, posterior ceratohyal; PMHL. posterior mandibulohyoid ligament (portion obscured by anterior ceratohyal shown in broken lines); SMHL. symphyseal mandibulohyoid ligament; VHH. ventral hypohyal. Cartilage shown in coarse stipple. Scale bar = 1 mm. or the coronoid process (anisochromines) of the dentary (Fig. 3). We interpret this change in orientation as an autapomorphy of the Anisochrominae. Although the former (symphyseal) ligament is well-developed in congrogadines examined by us (including species of Blennodesmus Giinther, Congrogadus Giinther, Halidesmus Giinther and Haliophis Riippell) and in the basalmost genus Rusichthys Winterbottom ( Mooi, pers. comm.), the latter (posterior) ligament is apparently absent (which may thus represent a synapomorphy of the Congrogadinae). 4. Dentary not forked. In congrogadines, pseudochromines and pseudoplesiopines, the dentary is distinctly forked posteriorly, with a relatively narrow lamina of bone connecting the promi- nent coronoid and ventral processes; this condition is typical of perciform fishes. In anisochromines, the coron
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