FORM AND GROWTH IN FISHES 



387 



length is the distance from the tip of the opercular bone to a 

 point on the lateral line immediately below, or above, the end 

 of the most posterior median fin. In some species this is the 



6 8 10 12 14- 16 16 20 2Z 



LerjGTh-Cn5. 



Figure 5 



dorsal fin (e.g., Leiostomus xanthurus); in others it is the anal 

 fin (e.g., Brevoortia tyrannus). The tail-length is the distance 

 from the end of the body-length to the tip of the caudaljfin 

 projected on to the long axis.^ The width is the distance per- 



2 For a figure showing the exact location of the points serving for these meas- 

 urements, the reader is referred to figure 3 in the paper by Crozier and Hecht. 

 See also figure 11 of the present paper. 



JOURNAL OF MORPHOLOGY, VOL. 27, NO. 2 



