244 C. D. WALCOTT PJiE-CAMIilllAX I'-OSSILIFEROUS FOKMATIUNS 



Plate 28. — Figures for Comparison 



The figures on this plate are introduced as a means of compai-ing the fragments 

 illustrated on plates 24 and 25 with known forms of the Merostomata. 



Plerygotus anglicus 



Figure 1. — Restoration of the under side, after Woodward : Monograph of British 

 Fossil Crustacea, order INIerostomata, plate 8, figure 2. 



Figure 2. — Upper side of telson of same. 



Eurypterus remii>es 



FiGUEK 3. — Telson and three posterior segments of the body, after Hall: Paleon- 

 tology of New York, vol. iii, plate 84a, figure 1. 



Figure 4.— Under side of head and anterior body segments, after Hall. 



Slimonia acuminata 



Figures. — Upper side of head and anterior body segments, after Woodward: 

 Monograph of British Fossil Crustacea, order Merostomata, plate 20, 

 figure 1. 



Figure 6. — Telson of same. 



Stylonurus 



Figure 7. — Body segments and telson, after Woodward : Monograph of British Fos- 

 sil Crustacea, order Merostomata, plate 28. 



Eurypterus 



Figures 8, 9. — Telsons referred to Eurypterus by Salter, after W'oodward : Mono- 

 graph of British Fossil Crustacea, order Merostomata, plate 28. 



