16 
INDEX TO NEW GENERA AND SUBGENERA. 
Yalescus, Distant, Ins. 278 
Yaricosipho, Cossmann, Moll. 87 
Yaticinaria, Dali, Moll. 100 
Venedus, Peringuey, Ins. 138 
Yerhoeffiella, Absolon, Ins. 304 
Yerpulus, Simon, Arachn. 43 
Yettius, Godman, Ins. 210 
Yictorlemoineia, Ameghino, Mamm. 
37 
Vigetus, Distant, Ins. 278 
Vireosa, Jordan and Snyder, Pisces 
22 
Yiroqua, Peckham, Arachn. 41 
Yitruvius, Distant, Ins. 278 
Yittaticella, Maplestone, Bry. 9 
Yizaga, Sivinhoe, Ins. 232 
Walkeria, Melichar, Ins. 288 
Watasea, Jordan and Snyder, Pisces 
26 
Watsonella, Grabau, Moll. 82 
Wiegmannia, Coilinge, Moll. 72 
Willemia, Borner, Ins. 304 
Woodworthia, Garnian, Rept. 18 
Woorda, Lucas, Ins. 255 
Wullaburra, Lucas, Ins. 255 
Wyeomyia, Theobald, Ins. 261 
Xanthandrus, Verrall, Ins. 268 
Xanthocryptus, Cameron, Ins. 191 
Xanthophaeina, Hampson, Ins. 224 
Xanthophysca, Fairmaire, Ins. 170 
Xanthopsar, Ridgway, Aves 75 
Xastrum, Neviani, Prot. 26 
Xatis, Fairmaire, Ins. 120 
Xenobythus, Peyerimhojf, Ins. 126 
Xestojoppa, Cameron, Ins. 191 
Xyalophora, Kieffer, Ins. 197 
Xylion, Lesne, Ins. 146 
Xylionulus, Lesne, Ins. 146 
Xyloblaptus, Lesne, Ins. 146 
Xylobosca, Lesne, Ins. 146 
Xylocis, Lesne, Ins. 146 
Xylodectes, Lesne, Ins. 146 
Xylodeleis, Lesne, Ins. 146 
Xylodrypta, Lesne, Ins. 146 
Xylogenes, Lesne, Ins. 146 
Xylomeira, Lesne, Ins. 146 
Xylomicrodon, Verhoeff, Myr. 16 
Xylonites, Lesne, Ins. 146 
Xyloprista, Lesne, Ins. 146 
Xylopsocus, Lesne, Ins. 146 
Xylothrips, Lesne, Ins. 146 
Xylotillus, Lesne, Ins. 146 
Xyrias, Jordan and Snyder, Pisces 
33 
Yashmakia, Warren, Ins. 243 
Yerongponga, Lucas, Ins. 232 
Yosemitia, Ragonot, Ins. 251 
Yozia, Jordan and Snyder, Pisces 34 
Ypsora, Schaus, Ins. 232 
Zabrachia, Coquillett, Ins. 262 
Zabriola, Fairmaire, Ins. 152 
Zachariasia, Voigt, Prot. 35 
Zacompsia, Coquillett, Ins. 274 
Zacranium, Ashmead, Ins. 196 
Zalises, Jordan and Snyder, Pisces 
34 
Zanthojoppa, Cameron , Ins. 191 
Zaprionus, Coquillett, Ins. 274 
Zebrias, Jordan and Snyder, Pisces 
26 
Zestocormus, Cameron, Ins. 191 
Zichya, Bolivar, Ins. 308 
Zittelospongia, Malfatti, Spong. 30 
Zoogonus, Looss, Yermes 53 
Zopyrinus, Fairmaire, Ins. 157 
Zygometis, Simon, Arachn. 41 
END OF THE THIRTY-EIGHTH VOLUME. 
CAMBRIDGE : PRINTED BY J. AND C. F. CLAY, AT THE UNIVERSITY PRESS. 
