BALISTES MACROLEPSIS - REDESCRIPTION AND LECTOTYPE DESIGNATION 



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Fig. 2 Canthidermis macrolepis, nesting pair in 7 m, Fahl Island, off Muscat, Oman (underwater photograph by J. P. Hoover). 



Fig. 3 Canthidermis macrolepis, BMNH 1939.5.24.1849- 

 A.C. Gill). 



1850, 30.5 mm SL, 1933-34 John Murray Expedition station 25, Gulf of Aden (drawing by 



upper-lobe rakers markedly smaller than those of lower lobe (from 

 examination of right sides of BMNH 1939.5.24.1849-1850). 



Body relatively deep in juveniles (greatest body depth 56.3- 

 57.0% SL; depth of body 46.6^16.9% SL), more elongate in adults 

 (greatest body depth 32.9-35.9% SL; depth of body 27.9-29.3% 

 SL); width of body 22.3-22.5% SL in juveniles, 14.9-15.3% SL in 

 adults; head large in juveniles (head length 39.0-39.7% SL), shorter 

 in adults (26.0-27.5% SL); snout length 19.0-19.1% SL in juve- 

 niles, 17.1-17.8% SL in adults, the dorsal profile of snout slightly 

 concave in juveniles and slightly convex in adults; eye round, the 



greatest orbit diameter 1 1 .8-1 2. 1 % SL in juveniles, 4.6-4.7% SL in 

 adults; interorbital space broad (interorbital width 13.1% SL) and 

 concave in juveniles, convex and narrower (interorbital width 9.4— 

 9.5% SL) in adults; caudal peduncle short and deep in juveniles 

 (least depth 12.5-12.8% SL, length 12.8-13.1% SL), long and 

 slender in adults (least depth 8.3% SL, length 22.8% SL); pelvic flap 

 not capable of large ventral expansion, the free pelvic terminus with 

 two apparent, weakly movable sections. 



Mouth small and terminal; teeth incisiform, sharp and notched on 

 the edges, projecting and close set, four on each side of jaws, with an 



