Eurypterus pittsfordensis Sarle 
Page 196 
See plates 13-16, 18 
Large sternite, showing transverse suture and antelateral “ears.” 
Natural size 
Female second sternite, showing genital appendages. Natural size 
Half of sternite showing transverse suture and cleft. Natural size 
Male opercular appendage. Operculum shows median cleft and trans- 
verse suture. Natural size 
Fragment of sternite, showing median cleft, transverse suture and lobe 
of antelateral angles. Natural size 
View of two postabdominal segments and telson in approximate positions. 
Natural size 
Horizon and locality. Pittsford shale. Pittsford, N. Y. 
Eurypterus ranilarva nov. 
Page 208 
See plate 18 
Ventral view of average specimen. Holotype. Natural size 
Horizon and locality. Kokomo waterlime. Kokomo, Ind. 
Originals of figures 1-6 are in the State Museum, that of figure 7 is in 
the collection of Chicago University (no. 12905) 
474 
