CHAO and MUSICK: LIFE HISTORY OF JUVENILE SCIAENID FISHES 



UPPER PHARYNGEAL TEETH 



B 



LOWER PHARYNGEAL TEETH 



vM 



h% 



FIGURE 23. — Portions of left pharyngeal teeth in juveniles of six species of sciaenids: A. Larimus fasciatus; B. Cynoscion regalis; C. 

 Bairdiella chrysoura; D. Micropogonias undulatus; E. Menticirrhus saxatilis; F. Leiostomus xanthurus. Posterior end toward the 

 middle of the figure. 



TABLE 6. — Total number of lateral and inner gill rakers in juveniles of six species of sciaenids from the York River. 



Ml medial gill rakers. 



Larimus fasciatus has the longest and the most 

 closely spaced gill rakers (Figure 24 A). Each raker 

 has many minute spicules scattered on it (Figure 

 24a). Cynoscion regalis and B. chrysoura have 

 moderately long gill rakers compared with the 

 length of the gill filaments (Figure 24B, C). 

 Numerous minute spicules are also present on 

 each raker, especially the basal portion (Figure 

 24b, c). Micropogonias undulatus has relatively 



shorter gill rakers (Figure 24D) with seemingly 

 strong serrations limited to the basal half of the 

 raker (Figure 24d). The relative lengths of the 

 lateral gill rakers in Menticirrhus saxatilis and 

 Leiostomus xanthurus are the shortest (Figure 

 24E, F) and lack strong spicules (Figure 24e, f). 

 Leiostomus xanthurus has only slightly denticu- 

 late gill rakers and M. saxatilis has smooth gill 

 rakers. 



683 



