COLLETTE and RUSSO: SPANISH MACKERELS 



left postca rdina! vein 



k i d n 



TABLE 2. — Number of lamella in nasal rosettes of species of 

 Scomberomorus. 



ey 



FIGURE 8. — Kidney and postcardinal vein in ventral view 

 of Scomberomorus queenslandicus, Palm I., Queensland, 641 

 mm FL. 



unicolor and Orcynopsis unicolor. We have not 

 examined many small Scomberomorus nasal ro- 

 settes but did find 23 lamellae in an 80 mm FL S. 

 guttatus, a species for which the minimum count 

 of lamellae for specimens larger than 100 mm 

 was 30. 



Three species of Scomberomorus (koreanus, 

 munroi, and guttatus) had high counts, overall 

 means 53.4-54.8. The highest counts per side 

 were for S. koreanus (73) and S. guttatus (76). 

 Ten species had low counts, overall means 31.0- 

 36.0. These 10 included all 6 species of the regalis 

 group as well as lineolatus, multiradiatus, ni- 

 phonius, and semifasciatus. 



PHARYNGEAL MUSCLES 



The paired pharyngeal (retractor dorsalis) 

 muscles originate on the ventral surface of one or 

 two vertebrae between the third and the sixth 

 abdominal vertebrae and insert on the upper 

 pharyngeal bones (Fig. 2). We did not find any 

 differences between species as Collette and Chao 

 (1975) did for the bonitos. 



559 



