Dolichopterus otisius Clarke 
Page 270 
1 Carapace showing a broad furrowed rim, the large compound eyes and 
the ocelli. x 3 
2 Carapace showing the visual area of the compound eyes and the ocellar 
mound. x 3 
3 Slightly smaller carapace and two tergites. The compound eyes are 
depressed showing the thickened rim of the ocular node. x 3 
4 Carapace of young individual showing the greater prominence of the 
ocellar mound. x 3 
5 A presumably mature, well preserved carapace, showing the normal 
outline, a flat border and thickened rim, the crescent-shaped visual 
area of the compound eyes and a depression in the ocular node. x 3 
6 Interior view of a small carapace with two attached tergites. x 3 
7 A fragmentary carapace of a younger individual, referred in the pre- 
liminary paper with doubt to Eurypterus myops [see pl. 6, fig. 6]. 
X 3 
8 The type (holotype). x 14 
Horizon and locality. Shawangunk grit. Otisville, Orange co., N. Y. 
The originals are in the State Museum 
Dolichopterus stylonuroides nov. 
Page 276 
9 Small carapace showing the rim of the dorsal side. x 3 
10 Larger carapace showing both the rim of the dorsal side and the doublure 
of the ventral side. Natural size 
11, 12 The two counterparts of a carapace; the first showing more dis- 
tinctly the rim of the upper side, the other the doublure of the 
under side. Natural size 
13 Single specimen with tergites and swimming leg. The holotype of the 
species. Shows the characteristic outline and broad doublure of the 
carapace, the anterior position of the eyes and the lobelike append- 
ages of the distal joints of the swimming leg, and in the narrow 
tergites indications of the slender form of the abdomen. x 3 
14 Fragment of tergite, possibly belonging to this species. Natural size 
Horizon and locality. Shawangunk grit. Otisville, Orange co., N. Y. 
Hughmilleria socialis Sarle 
15 Epistoma, figured by Sarle as metastoma of Stylonurus? x 3%. See 
page 428 
Hortzon and locality. Pittsford shale. Pittsford, Monroe co., N. Y. 
All originals are in the New York State Museum 
532 
