F in A systematic revision of the African catfish genus Parauchenoglanis (Siluriformes: Claroteidae)

F. 7. Lateral view of the right cleithrum and pectoral fin spine (a); detail: humeral process of P. ngamensis (b) and of other Parauchenoglanis species (c). Only the humeral process is visible through the skin; with the rest of the cleithrum hidden by the opercle (at the left side of the dotted line) (scale=5 mm). cl, cleithrum; dp, dorsal process; hp, humeral or posterior process; ps, pectoral fin spine.