Stephanolepis auratus (Castelnau 1861)

Stephanolepis auratus (Castlenau)

A 2β is slightly more bulky, and the levator arcus palatini is just visible in lateral view. The ventral portion of rectus ventralis IV is smaller, and the arch-shaped ligament between the ventral processes of the third hypobranchials is lost. The coracoradialis is less well developed, and the medial projection for its insertion on the fourth radial is not as prominent. The adductor superficialis pelvicus is single anteriorly but bilaterally symmetrical posteriorly. The depressor of the second spine is larger, and is partially overlain by the epaxialis which attaches to the lateral surface of the pterygiophore between the two spines. The anterodorsal portion of the obliquus inferioris above the postcleithrum inserts musculously on that bone. The spinalis is small and inserts only on the neural spine of the second vertebra.