218 



Fishery Bulletin 88|l). 1990 



Figure 1 



Sagitta oi Pseudopentdcerun iv)ifiUri with annul! marked and numbered. 



plate, maxillary, and vertebrae were cleaned of tissue 

 and dried. Spines and rays of the dorsal, pelvic, pec- 

 toral, and anal fins were cleaned of tissue, embedded 

 in resin, cross-sectioned in a continuous series from the 

 base, and examined under a compound microscope. 

 Both surfaces of a section were examined. Tissues were 

 also examined under a dissecting: microscope with 

 reflected and transmitted light. 



Saj^ttae were sanded lightly on the surfaces with no. 

 400 ffc'\i carborundum sandpaper, then, with a dissect- 

 ing microscope, were examined whole against a black 

 background while submerged in water. Check marks 

 appeared as pairs of bright (opaque) and dark (translu- 

 cent) concentric bands under reflected light (Fig. 1 ). 



Scales were taken from nine different areas of the 

 body. Three sites were along the lateral line: below the 



