616 ONTOGENY AND SYSTEMATICS OF FISHES- AHLSTROM SYMPOSIUM 



Table 161. Osteological Features and Counts for the Scombroid Families and Morone. a Primitive Perciform 



Fish. 



Scombro- Gcmpylidae 



labracidae {detnpylits. 



{Scombrolahrax) Ncsiarchits) 



Thunnini Scombnni Istiophondae Xiphiidae 



iThimnus) {Scomber) {hliophonis) (Xiphtas) 



Percichthyidae 

 i.\forone)* 



Predorsal bones: 



Present or absent absent 



Number 







usually ab- 



sent# 

 Oor 1 



First anteriormost dorsal pterygiophore; 

 Supports how 2 2 



many spines 

 Inserts in inter- 3 2 



neural space 



number 



First anteriormost anal pterygiophore: 

 Supports how 3 2 or 3t 



many spines 



Middle radials: 



Present or absent present present 



Dorsal and anal stay: 

 Present or ab- 



sent, ossifies to part 

 one or two 

 parts, poste- 

 riorly 

 Bifurcated or non-bifur- 



non-bifurcated cated 



present: one present: usu- 



ally 2 

 parts® 



bifurcated 



absent 

 



2 

 2 



2 or 3*** 



present or 

 absent 



present: one 

 part 



bifurcated 



absent 

 



2 

 3 



absent 

 



2 

 3 



absent 

 



3 

 1 



present 



present 



present 



absent 

 



1 to 3, 

 mostly 2 



2 



1 to 3, 

 mostly 2 



absent 



present 

 3 



3 

 3 



present: one present: one present: one present: one 

 part part part part 



bifurcated 



bifurcated 



bifurcated 



non-bifur- 

 cated 



present 



present: one 

 part 



non-bifurcat- 

 ed 



