668 PROCEEDINGS OF THE NATIONAL MUSEUM 
Xenoglossa fulva, 607. 
ipomoeae, 534. 
Xenoglossodes, 607. 
xenomastax, ‘Ashmeadiella 
natha), 543. 
Xenomystus, 306. 
nigri, 306. 
Xeralictus, 607. 
timberlakei, 607. 
Xeromegachile, 607. 
Xeromelecta, 608. 
Xeromelissa, 608. 
Xeromelissa wilmattae, 608. 
Xerophasma, 608. 
bequaerti, 608. 
Xilocopa, 608. 
Xoridescopus, 279. 
Xylocopa, 523, 529, 5380, 531, 542, 577, 579, 
580, 588, 592, 598, 608. 
appendiculata, 523. 
bomboides, 581. 
coerulea, 543. 
collaris, 608. 
confusa, 551, 580. 
latipes, 529, 588. 
(Schénherria) micans, 598. 
muraria, 537, 567. 
nasalis, 530. 
olivieri, 592. 
splendida, 521. 
(Nyctomelitta) tranquebarica, 579. 
violacea, 608. 
xylocopoides, Megachile, 569. 
(Cubitog- 
Zacesta, 608. 
rufipes, 608. 
Zacosmia, 573, 608. 
Zadontomerus, 608. 
Zalygus, 608. 
cornutus, 608. 
Zaodontomerus, 608. 
Zaperdita, 608. 
zapoteka, Megachile, 541. 
Zarhopalus, 47. 
zebrata, Perdita, 576. 
Zelleria parnassiae, 276. 
pyri, 275. 
zeteki, Pityophthorus, 226. 
zibethica, Ondatra, 511. 
zillii, Acerina, 344. 
Tilapia, 340, 342, 344. 
zonalis, Perdita, 577. 
Zonandrena, 608. 
zonata, Arabella, 102, 125. 
Lumbriconereis, 102, 128. 
Lumbrineris, 102, 123 (fig.). 
Notocirrus, 102, 125. 
Zonocryptus 277. 
sphingis, 278. 
Zonohirsuta, 608. 
Zonopimpla, 283. 
albicincta, 283, 284. 
ashmeadi, 283. 
zunilensis, Chirodines, 162. 
zygaena, Sphyrna, 31. 
Zygogeomys, 508. 
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