SYSTEMATIC INDEX
515
U. chesteri Goode & Beane, 125, 127
Uroptychus nitidus (Milne-Edwards), 391
Uvigerina, 286
U. peregrina Cushman, 141, 231
Vampyroteuthis infernalis Chun, 395
Vesicomya, 355
V. cordata Boss, 286
Vesicomyidae (Mollusca: Bivalvia), 88, 90, 94, 95, 97, 98, 412
Vestimentifera (Polychaeta) (see also vestimentiferans in General
Index), 81, 88, 89, 95, 97–100, 103, 112, 285, 286, 384, 408,
411, 414, 416
Willemoesia suhmi Bate, 394
Xenophyophora (see also xenophyophores in General Index), 16,
27, 30, 31, 341, 349, 359
Xylophaga, 354, 393
Xylophaginidae (Mollusca: Bivalvia), 30, 395, 396, 406, 408, 414
Xyloplax, 401
X. medusiformis Baker, Rowe & Clark, 399, 402
X. turnerae Rowe, Baker & Clark, 399
Xyloredo, 166
Yoldiella jeffreysi (Hidalgo), 134, 393
Ypsilothuria bitentactulata Ludwig, 400
Zoanthinaria (Cnidaria), 138, 402, 403
Zoarcidae (Chordata) (see also eelpouts in General Index), 100,
112, 129, 130, 287
Zooflagellata, 338
Zoroaster fulgens Wyville-Thomson, 399