628 
Tylopterus, 150, 216-18 
boylei, 217, 218-19 
See also Eurypterus 
Ulrich, E. O., acknowledgments to, 7; 
cited, 324; mentioned, 87 
United States National 
knowledgments to, 7 
Utica shale, 86, 93 
Museum, ac- 
Van Beneden, M. E., cited, 434 
Van Deloo, Jacob, mentioned, Io 
van Ingen, Gilbert, acknowledgments 
to, 8; cited, 417, 419, 420 
Vernon shale, 91, 93, 106, 421 
von Alth, cited, 95, 434 
von Beneden, cited, 136 
von Koenen, cited, 107 
von Reichenbach, E. Stromer, cited, 439 
von Siemiradzki, Jos., cited, 438 
Walchia pinniformis, 112 
Walcott, Charles D., acknowledgments 
to, 7; cited, 82, 98, 128, 287, 321, 324, 
385, 386, 406, 410, 434, 435, 438, 439; 
mentioned, 16 
Walther, Joh., cited, 110, 113, 438 — 
Wardell, H. C., mentioned, 8, 9, 10 
Warren, Pa., 17 
Watase, S., cited, 40, 41, 42, 135, 436 
Waterville, 9 | 
Waverly beds, 18, 90, 94, 161 
NEW YORK STATE MUSEUM 
Welch, L. B., mentioned, 326 
Weller, Stuart, acknowledgments to, 8; 
mentioned, 425 
Westmoreland, 13 : 
White, David, acknowledgments to, 7; 
cited, 400, 40I, 402, 405, 439 
Whiteaves, J. T., cited, 17, 94, 216, 350, 
357; 435 
Whitfield, R. P., acknowledgments to, 7; 
cited, 223, 262, 356, 387, 388, 390, 391, 
392, 393, 394, 395, 396, 397, 398, 412, 
434, 435, 437; mentioned, 16, 194 
Williams, H. S., cited, 435 
Wilsonia kokomoensis, 99 
Woods, cited, 141 
Woodward, Henry, cited, 15, 17, 18, 36, 
44, 45, 46, 49, 61, 62, 63, 64, 65, 67, 71, 
76, 81, III, 113, 135, 136, 156, 217, 221, 
227, 228, 229, 278, 279, 280, 282, 284, 
286, 311, 328, 331, 348, 352, 363, 370, 
376, 400, 433, 435, 437, 438, 439 
Woodward, Smith, cited, 357 
Woodworth, cited, 85, 86 
Worthen, cited, 17, 219, 222, 223, 225, 433 
Xiphosura, 147, 407 
Yates county, 18, 89 
Zittel, cited, 19, 44, 47, 96, 168, 169, 228, 
387 
