ILLUSTRATIONS XXI 

 FIGURE PAGE 



313. A slender bodied Robber or Asilid Fly {Eurliabdus zephyreus). From 

 Aldrich, U. S. N. M 132 



314. A Robber or Asilid Fly {Pronmchus vertebratus) . After Washburn 132 



315. A Bat-fly {Nyclcribia, sp.)- Bur. Ent., after Packard 132 



316. An Ephydrid Fly {Ochtheria hitmilis). After W'illiston 132 



317. The Morelos Orange Fruit-fly {Trepeta liidens). Bur. Ent 132 



318. The Corn Syrphid {Mcsograpla poUta). Bur. Ent 132 



319. The Horse Bot-fly {Gastrophilus cqui). Bur. Ent 132 



320. The Sheep Bot-fly {(Estrus ovis). Bur. Ent 132 



321. The same, with wings spread. Bur. Ent 132 



322. A Tsetse Fly (G/o55/«a ;«or5/7(i;/5), before feeding. After Austen 134 



323. A Tsetse Fly (Glossina palpalis), in the act of feeding. From Austen, 

 after Roubaud 134 



324. A Tsetse Fly (G/o.y5mo »Jor5/taH.y), after feeding. From Austen 134 



325. A Tsetse Fly {Glossina longipennis), in resting position. From Austen. 134 



326. A Tsetse Fly {Glossina morsitans). After Hindle 134 



327. A Horse-fly or Gad-fly {Tabanus kingi). From Austen 134 



328. Another Horse-fly {Tabanus lineola). After Lugger 134 



329. A Black-fly {Sinudiiim vcnustum). After Washburn 134 



330. A Turkej'-gnat {Simuliiim mcridionalc). Bur. Ent 134 



331. A Tachinid Yly {Cholomyia inacqiiipcs) parasitic on weevil grubs in 

 North and South America. Bur. Ent 134 



332. Another Tachinid Fly {Myiophasia aenca) parasitic on weevil grubs 



in North and South America. Bur. Ent 134 



2,2,2,. A Tachinid Fly {Ennyomma globosa) parasitic on the grubs of the Boll 



WeevU (figs. 177, 178). Bur. Ent 134 



334. Pupa case of the preceding protruding from the skin of a dead Boll Wee- 

 vil grub. Bur. Ent 134 



335. A male malarial ^Mosquito {Anopheles mactdipennis); note the feathery 

 antennae; the males do not bite. From Hindle 134 



336. One of our largest Mosquitoes {Psorophora ciliata), and one of the 

 strongest biters. From J. B. Smith 134 



337. The male yellow-fever ^Mosquito {Aedes calopus). From Howard 134 



338. The female yellow-fever ]\Iosquito. From Howard 134 



339. The Congo Floor-maggot (adult sho\\-n in fig. 273). From Graham- 

 Smith 134 



340. The Screw-worm (adult shown in fig. 276). From Graham-Smith 134 



341. Maggot of a Horse-fly (adult shown in fig. 327). From Hindle, after 

 K-uig 134 



342. Maggot of the Horn-fly (adult shown in fig. 278). Bur. Ent 134 



343. Maggot of the Blow-fly (adult showTi in fig. 263). From Graham- 

 Smith 134 



344. The ^Morelos Orange Fruit-worm (adult showm in fig. 317). Bur. Ent.. 134 



345. Maggot of the Corn Syrphid (fig. 318). Bur. Ent 134 



346. Maggot of a Tsetse Fly (fig. 323). From Hindle, after Roubaud 134 



347. The same, assuming a different form. From Hindle, after Roubaud. . . 134 



348. The same. From Hindle, after Roubaud 134 



