Hughmilleria socialis Sarle 
Page 335 
See plates 59-61, 62-64 
Pincers of a chelicera. x 34 
Extended chelicera and first two pairs of walking legs. x 3 
Fragment of first joint and the pincers of a chelicera. x 4 
Pair of chelicerae, presumably in normal position. x 3 
The two posterior walking legs in complete preservation. x 3 
Dorsal view of a large specimen. The anterior portion of the carapace 
is broken away thereby exposing one extended chelicera and the 
walking legs of the right side. Both swimming legs are also shown. 
Natural size 
Complete walking leg, showing coxal joint and articulation of second 
joint. x 34 
Complete chelicera in natural position. x 34 
Dorsal view of right side of cephalothorax: with the four walking legs 
in position. x 3 
Horizon and locality. Pittsford shale. Pittsford, Monroe co., N. Y. 
The originals of all figures are in the State Museum. All specimens 
are cotypes | 
562 
