16 



LIST OF ILLUSTRATIONS 



V L U M ]•; B 



PAQE 



Fig. 1.— >[a|i C.I" Anglo-Eiary|itiiin Sudan, 



slidwiiif; IVdviiu'i's ... ... 2 



Fig. 2.— Floating Lalioratory and Steamer 



Cidex 16 



Fig. 3.— Mi'dmnical Sliakcr for Soil tube.s ... 35 



Fig. 4. — CViitrifiigi' fur Soil analysis 39 



Fig. 5. — Aiijiaratus for tlu' detOTinination of 



"Silt- 41 



Fig. 6. — .Map showing mean rainfall in Ilic 



Anglo-Egyiitian Sudan, 1905-9 ...46-47 

 Fig. 7. — Map showing proposed flczira Irri- 



gixtion Scheme 49 



Fig. 8. — Map of the Oezira, showing points 



at which samples of Soil were 



collected for Analysis 51 



Fig. 9. — Cii/otro)iis procern, showng leaf, 



Hower and seed-jxxl 87 



Fig. 10. — Calotropis procera, showing entire 



plant 87 



Fig. 11.— Mapof Anglo-Egj'ptian Sudan ... 94 

 I'l.ATi: I. — Chrysops fuscipennh. Ucema- 



to/jota alji/xxinica. llwmatopota 



hruimescens. TabanHS sufis 



Facinri 112 

 I'lvii 11. — Tahanus cnmelnrius. Tahanw' 



(Ustinctiig. Talianns kitif/i. 



Tahaiuiif mordax Facinri 114 



Platk III. — Tfihitnns Iwiiioln. Tfihnnus 



}Mr FnciiKj IIG 



I'r.ATK IV. -7V//«(7t»s (litd'niatu.f. (r'tsfro- 



p/iiliis asiniis. (Estrus variolosus 



Faciiui 118 

 Fig. 12.— Heads of Tnhanit.o l-imii and 



Tahaniis tieniola ... ... ... 120 



Fig. 13.— View of Khor Arbat 121 



Fig. 14. — A rock at Khor Arbat showing 



sites selected by T. kin;ii for 



ovipo.siting 1 22 



Pl.\tk V. — Tabarius diUenitUus. I'abannii 



Mwji 123 



I'r.ATK VI. — Lypero^m crhjun. Lifperoua 



minitta. Lyperoitia fliiron.ri. 



Lynchia iiuiurn. Fc/ie.'<li//iii.^ 



nepiaceus. Nycterihofca (ifricann. 



Simulium tjriseicoUin. Siiiudium 



damnosum. Culicoides,sp. Facing 126 

 Fig. 15.— Larva of (Estrim variolosug ... 127 



V\g. 16.— Pu\>i\ of (Futi-us variolosus 127 



Platk VII. — Cotton fitcm-horer,Sp/ieiioptera 



nerjlecta 185 



I 'r. \\v. \ 1 1 1. — .Melon Weevil, liarin trfff/ardJii. 



Melon St<'ni-borer, A/twiieri/iia 



ttiiiuliila ... ... ... Farinij 137 



Platk IX. — ,Sino.n//on mtdnnioiin. Jiaris 



/oratii. A/i/i'moi/tiKter harhara. 



A idacfn>horix fore i col I in. /lai/rada 



picta ... ... ... Facinij 140 



Fig. 17. — Diceroinyia iij'rirniia ... ... 152 



Plate X. — Diceromyia a/rim iia,i\.s\>. ... 153 



Fig. 18. — Diceromyia africana , ^ chiaycr ... 154 



Plate XI. — C iilej: sud/ineriKin, n.i<\i.... ... 155 



Fig. 19. — Cu/ej- SudaveiisiH, $ c\ii!i\n'v ... 150 

 Platk Xll.—Qne/ea a'l/iioj>ica ... F'tciiif/ 1C7 

 Plate XIII. — ITyphanlornis tO'ttiojitents 



Faciiui 175 



Plate XIV.— Rnthidie 178 



Fig. 20. — hiithits occitanus, ivoxu ahove ... 179 

 Fig. 21. — Bnthn« occitanns, abdomen from 



below 179 



Fig. 22. — La.st two segiuents of caiula of 



Biit/iHs amoreuM 186 



Fig. 23. — Last two segments ol caudu of 



llnlltiis (jiiinquf.i/riatns ... ... 186 



Fig. 24.— End of foot of a 7i(t//t7« 186 



Fig. 25.— Cephalothorax of /?«//(?(.« i»ina.>:.. ISO 

 Fig. 26. — Movable finger of in.ixillary palji 



oi a, Fai-a//utfinx isO 



Fig. 27. — Sternum of Fandiniis 1 86 



Plate XV. — Pandinun imperator. Pan- 



dinns pallidus. Jiuthus ncufe- 



carinatu.^. Damon variegatns ... 189 



Fig. 28. — Ma.xillary jjalii of Damon vni-ietiatun 190 



Fig. 29.— Mandible of a r,V«>,^x 192 



Fig. 30.— Mandible of a y^V/w/f*- 192 



Fig. 31. — Upper mandibular finger of Sdjmtia 



sr/iwein/iirf/ii ... ... ... 192 



Fig. 32. — Mandilile of Gfumojiniii ni/esreiiit 192 



Fig. 33. — Mandible of i)(psm e/«ren4e)v/i' ... 192 

 Fig. 34. — Upper mandibular finger of Salptuia 



dentatidenn ... ... ... ... 192 



Yig. ib.—Galeodes arabs 192 



Plate XVI. — A'aia niririco/lis 197 



Fig. 36. — .Mimentary tract of adult melon 



]nig, Axjujngojius vidiiatiis ... 202 

 Fig. 37. — Structure and life-cycle of J/er/ie- 



tomonas aspongopi ... ... 203 



Fig. 38.— Over-seer's store hut, dugout ... 206 



Fig. 39. — Overseer's hut near old furnaces 206 



Fig. 40.— A dam acro.ss a Khor 206 



Fig. 41. — Overseer's hut, )>lan from back ... 206 



