PLATE III. 



Fig. 1. Williamsonia pecten (Phillips). Page 197. [48,732.] 



Fig. 2. Williamsonia pecten (Phill.). P. 197. [V. 3517.] 



Fig. 3. Williamsonia pecten (Phill.). P. 197. [V. 3519.] 



Figs. 4 and 5. Williamsonia pecten (Phill.). P. 198. [39,284.] 



Fig. 6. Williamsonia pecten (Phill. ). P. 200. [39,285.] 



Fig. 7. Williamsonia pecten (Phill.). P. 200. [13,515.] 



Fig. 8. Williamsonia pecten (Phill.). P. 201. [V. 3284.] 



