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.

Published as part of Geerinckx, T., Adriaens, D., Teugels, G. G. & Verraes, W., 2004, A systematic revision of the African catfish genus Parauchenoglanis (Siluriformes: Claroteidae), pp. 775-803 in Journal of Natural History 38 (6) on page 785, DOI: 10.1080/0022293021000039160, http://zenodo.org/record/10099764