124 
Fishery Bulletin 96(1 ), 1998 
williamsi, S. fasciolaris, and S. melasmatotheca. in 
lacking a pupillary operculum (present in the oth- 
ers). Of these, <S. caribbeanus appears most similar 
to S. williamsi but differs in lacking small, ctenoid 
scales on blind-side dorsal- and anal-fin rays (present 
in S. williamsi) and in having pigmented blotches in 
the dorsal and anal fins (vs. dorsal and anal fins with- 
out blotches in S. williamsi). 
