584 



HYMENOPTERA OF AMERICA NORTH OF MEXICO 



xanticles (Wlkr.), Haltichella 276 



Xenacis Foerst. 172, 179 



Xenarcha Foerst. 58 



Xenobrachys Foerst. 92 



Xenochile Schus. 341 



Xenocrepis Foerst. 264 



Xenodocon Foerst. 127 



Xenoglossa Sm. 503 



Xenoglossodes Ashm. 512 



Xenolytus Foerst. 94 



Xenomymar Cwfd. 216 



Xenomyrmex Forel 357 



Xenopanurgus Mich. 459 



Xenopompilus Evans 385 



Xenopria Fouts 289 



Xenoschesis Foerst. 174 



Xenostigmus Sm. 29 



xenus Rozen, Nomadopsis 458 



Xeris A. Costa 27 



Xeromegachile Mitch. 488 



xerophila Bohart, Chrysis 311 



xerophila (Ckll.), Proteriades 479 



xerophila Timb., Perdita[s] 453 



xei-ophilum (Ckll.), Dianthidium 474 



Xerosmia Mich. 479 



Xerostictia Gillaspy 410 



Xestonotidea Gah. 304 



Xestonotus Foerst. 304 



Xestopelta Dasch 187 



Xiphomyrmex Forel 360 



Xorides Latr. 80, 81 



XORIDINI 80 



xutha Tow., Labena[s] 80 



Xyela Dalm. 6 



Xyelatana Benson 6 



Xyelecia Ross 8 



XYELIDAE 6 



Xylocelia Roh. 397 



Xylocopa Latr. 515 



XYLOCOPINI 514 



xylocopoides Sm., Megachile 490 



xyloni McCook, Solenopsis 357 



xylophagorum (Ratz.), Roptrocerus 251 



Xylophrurus Foerst. 128 



Xysma Pate 398 



yakutatensis Ashm., Apanteles 44 



yakutatensis Ashm., Cratichneumon 148 



yakutatensis Ashm., Pimpla 74 



yarrowi (Cress.), Caupolicana 422 



yavapai Schus., Sphaeropthalma 330 



Yelicones Cam. 58 



Yezoceryx Uchida 85 



yosemite Tow., Aptesis 104 



yosemitensis Timb., Perdita 453 



yoshidai Nakayama, Coccophagus 225 



yucatanense Cam., Joppidium 122 



Yuchiha Pate 420 



yukonensis (Ashm.), Helcostizus[s] 130 



yukonensis Tow., Gambrus 120 



yumaella Schus., Sphaeropthalma 330 



yumensis LaBerge, Melissodes[s] 511 



yumorum Vier., Andrena 436 



zabriskiei (Ashm.), Baeus 297 



zabriskiei Cress., Diomorus 250 



zabriskiei How., Axima 271 



zabriskii Ckll., Nomia 470. 471 



Zacalochlora Cwfd. 262 



Zadiprion Roh. 14 



Zadontomerus Ashm. 514 



Zaglyptonotus Cwfd. 251 



Zaglyptus Foerst. 69 



Zagrammosoma Ashm. 230 



Zaleptopygus Vier. 205, 206, 207 



Zamansa Vier. 109 



Zamastrus Vier. 126 



Zanonia Masi 270 



Zanthojoppa Cam. 139 



Zanysson Roh. 406 



Zaphleges Foerst. 95 



Zaplethocornia Schmied. 175 



zappei (Roh.), Acantholyda 10 



Zarhopalus Ashm. 243 



Zathleges Foerst. 95 



Zatropis Cwfd. 266 



Zatypota Foerst. 73 



zeae Turn & Wtstn., Rhabdepyris 314, 315 



zealandicus Ashm., Euctenopus 87 



zebrata (Cress.), Nomadopsis[s] 459 



zebrata Cress., Perdita[s] 454 



zebraticolor Heinr., Pseudamblyteles 154 



zebratum (Cres.), Heteranthidium[s] 473 



zebratus (Cress.), Melanichneumon 142,143 



zeirapher.ie Wly., Earinus 39 



zelica Bks., Cerceris 415, 418 



Zelotypa Foerst. 293, 294 



zelotypus Cress., Ichneumon 161, 164 



Zemiodes Foerst. 178 



Zemiophora Foerst. 177 



Zemiophorus Thoms. 177 



Zeviiophron Foerst. 176 



zendaloides (Robt.), Leptochilus[s] —377,378 



zephyros Sandh., Osmia 484, 485 



zephyrum (Sm.). Lasioglossum 467 



zimmermanni Dahlb., Chalybion[s] 405 



zigzag Riley, Trybliographa 282 



zizaniae Mues., Apanteles 44 



ziziae Rnbts., Andrena 436 



ziziae (Robts.), Hylaeus 423,425 



ziziaeformis Ckll., Andrena 436 



. zobeide Brim., Cerceris 415, 418 



zonalis (Cress.), Nomadopsis[s] 459 



zonalis Cress., Perdita [s] 454 



zonalis (Cress.), Pseudomasaris 376 



zonaria Say, Microgaster 44 



zonata (Davis), Tromatobia 69 



zonatus Sm., Epeolus 500 



zonulum (Sm.). Lasioglossum 460 



Zootrephes Auctt. 181, 182 



Zootrephus Thoms. 181, 182 



zosma Brim., Cerceris 415, 418 



zwolferi Delucchi, Enaysma 233 



Zygota Foerst. 292 



•u: U.S. GOVERNMENT PRINTING OFFICE: 1967— 20S-432 



