EXPLlCATIOiN DES FIGURES. 
Figv. 156, Platypl’S 
Perrisi, 0*9. 
Fig. 157, P. — 
CURTUS, 9 . ■ ■■ 
Fig. 158, P. — 
OXYURES, 0*9* 
Fig. 159, P. — 
PlUFRONS, 0 *. 159 B, C, var. 
Fig. 160, P. — 
SOLIDES, 9 . 160 B, c, I), var 
Fig. 161, P. — 
TRENCATUS, 9 . 
Fig. 162, P. — 
STRIATES, 9 , 
Fig, 163, P, — 
DISSIMILIS, o*‘ 
20 
