nw 
com 
Eurypterus ranilarva nov. 
Page 208 
See plate 17 
Ventral view of average specimen (paratype). Shows outline of cara- 
pace, walking legs, coxae and other segments of swimming legs and 
the sternites. Natural size 
Dorsal view of a specimen retaining a swimming leg (paratype). Natural 
size 
Horizon and locality. Kokomo waterlime.. Kokomo, Ind. 
Eurypterus pittsfordensis Sarle 
Page 106 
See plates 13-17 
Portion of endognathite, probably the fourth, doubtfully referred to 
this species. Natural size 
First endognathite or walking leg probably belonging to this species. 
Natural size 
Female opercular appendage. Natural size 
Dorsal view of last postabdominal segment, showing the postlateral 
striated lobes and the median denticulate notch of the posterior edge. 
Natural size 
Section through postabdomen of a very large individual. Natural size 
Cross section of postabdomen, showing the triangular scales on the tergite. 
Natural size 
Horizon and locality. Pittsford shale. Pittsford, N. Y. 
Originals (Sarle’s cotypes) of figures 1 and 2 in the museum of Chicago 
University (nos. 12907 and 12906); those of figures 3-8 in the State 
- Museum 
476 
