Dorsal view. Bare slope W. 30 S. from the middle of Barkly
Bridge, on the farm Olifant's Kop (20h).

2. Trigonia holubi sp. nov.

2. Left valve; 2a, frontal aspect of same specimen, showing both
valves. Left side of Coega Valley, half a mile down from the
railway (458g). In fig. 2, a portion of the shell is missing from
the lower part of the valve; in the drawing, the ribs have been
restored in this part and the ornaments supplied by copying the
corresponding part of the right valve.

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