Panopeidae Ortmann, 1893

Rhithropanopeus harrisii Gould, 1841 (Fig. 20)

Ossicles I and II are inclined about 60° in the antero ventral direction. The zygocardiac ossicle (V) has a large semicircular impression antero ventral. The unpaired propyloric ossicle (VI) is inclined a few degrees in the posterior direction; its dorsal margin is weakly U-shaped and has a sharp-edged central portion. The pectinal ossicle (VIII) is horseshoe-shaped with seven accessory teeth. The inferior lateral cardiac ossicle (XIII) has a connection piece to the sub-dentate ossicle (XIV) antero dorsal.