Bw DN He 
oOo mn 
‘oO 
Pterygotus macrophthalmus Hall 
Page 350 
See plates 69, 70 
Complete fixed pincer or chela of chelicera. Natural size 
Fragment of fixed pincer showing the teeth. Natural size 
Part of ventral marginal shield and epistoma. x 2 
Tergite. Natural size 
Hortzon and locality. Bertie waterlime. Cranes Corners, Herkimer co., 
N. Y. 
Serrations of tooth of chela. x 3 
Horizon and locality. Bertie waterlime. Jerusalem hill, Herkimer co.., 
N. Y. 
Ventral view. Hall’s type of P. osborni. Shows the walking 
legs and metastoma. Natural size 
Horizon and locality. Bertie waterlime. Waterville, Oneida co., N. Y. 
Coxal joint of swimming leg. Natural size 
Horizon and locality. Bertie waterlime. Litchfield, Herkimer co., N. Y. 
Group of appendages showing a well preserved walking leg, a metastoma 
and coxal joint of swimming leg. Natural size 
Horizon and locality. Bertie waterlime. Cranes Corners, Herkimer co.., 
N. Y. 
Fragment of integument showing the characteristic form of the scales. 
X 2 
Horizon and locality. Bertie waterlime. Jerusalem hill, Herkimer co., 
10 Telson of a young individual. Natural size 
Horizon and locality. Bertie waterlime. Cranes Corners, N. Y. 
All figures are from photographs. 
The originals of figures 1-5, 8-10 are in the State Museum: those of 
figures 6 and 7 1n the American Museum of Natural History 
582 
