33 



a. Posterior end of median cristae of trunk deflected and 

 sub-continuous with inferior cristae of tail fig. 17 n 6 . 1. 



b. Median cristae of trunk rectilinear, ending free fig. 17, n. 3. 



c. Median cristae of trunk rising hindwards behind dorsal 



and reaching the superior cristae of the tail or nearly so. fig. 17, n. 4. 



5 



Fig. 17. Arrangement of superior (Y). inferior (i) and median (nt) cristae in 

 subdorsal region of Syngnathidae. For explanation see text. 



II. Superior cristae of trunk and tail discontinuous. 



1. Inferior cristae of trunk and tail discontinuous. Median 



cristae of trunk and inferior cristae of tail continuous . . . fig. 17, n. 5. 



2. Inferior cristae of trunk and tail continuous. 

 INDOAUSTRALIAN FISHES IV. 3 



