CONE Ne LS: 
Page 
ocation and:elimateontne Hawaiian lslandss 2555225 22.525- 262. 52522-2-5--- 9 
he sugar amdustaypemeila wales Ss eee yeh ee. Dea 9 
DUP Ar CAMeMMSC Cis ker settee SU to oni Vo niece ae WO Se as oe 11 
The sugar-cane leafhopper (Perkinsvella saccharicida Kirk.)....-....---.---- 12 
Mistral uibOmepy ee a eee ae DE os Se wlad a2 12 
Appearance of the leafhopper in Hawaiian cane fields.......-..-......- 12 
Descripmon-otethe leathoppers. 2225. 4--eeeeeas Soe aes ow. Nae eee: 13 
Dispersion ot the leathopperssss too ee ee eee 14 
iiiteshistonygandshabitssascesatar eis tk oat a eee ee sec 15 
SyaUp coms Oleleathop perms sense ee gh ee ST 17 
Characterrotemny Uy; tothe °Canens sateen cee 22 oe a ciy Secale 3 18 
J Opi VSvawe. Ove MUO LUBE eels 8 Perak mgs cope ee ah i a a 19 | 
Hactors responsible for the outbreak of 1903. 2-22. 222-2..2..242.-22-: 20 
ihesdeathoppersand, beekeeping tee erst ee) cect once 20 
Controloitheleathoppetin- ee ctian see a ors oe oe eek oe aioe see 22 
iDirectimeasuressis ee qe es ee eet GE eee we aS reno 22 
JS CC LYE TC eS ime rty st Sere acre 8 A alr wk WAGs RE a. eae ao 22 
ColllecitonPbyeme tise tease cee A re Sts Sk Bee ala 22 
Cutting and burning in the infested centers.-...............-.- 22, 
Siappineptineslea vest wee ete ee ear Wee ih a ee tle 2 23 
iBurninesoltrashvattersMaryestimeee= see see aes eo oe 23 
indinectimcaswress stain yee es eer ee a a tee ie ace ees 23 
Selection of varieties of cane for planting..:..-.........-..... 23 
Cultural methods on the plantation............. Baan Sie 25 
Diversiiication olsCrOops ee asa ct mse heros eet eye 26 
Control of the rind disease of sugar cane...........-..-..--- 26 
Na turalsememi esters sate Geen ihe ale ee Sea les 28 
Species already present in the Hawaiian Islands................-- 28 | 
Speciallwimtnro due HONS hs: sees asec ms he a cee Stas ye 29 
elNel ate des pe Cles weit Me caipaeneas enn gaara Geen Rea HN yee Se Th 34 | 
The Hawatian sugar-cane borer ([Sphenophorus| Rhabdocnemis obscurus | 
SOI SC) Sys as enon nem at Cea teeter kh Master ace MN Wek te oe Cn kU ee ea 39 | 
Generale charactenistiesesmetvy ccm conte oe elas ie Se ee a i 35 
DIS trllo uit] Olesen ieee Ne aa Pen TL gl ati ER ey Sal 36 
Occurrencernnukla walle ne sae meee ee Se 8 oo 36 
Enea StOmye Maisie tomer we SP ei eet 2 UF aa: 37 
Womenolpmensiinesare samen Nee py ete yc Fn eis ist ae ks 39 
Selechioniot varieties tor plamtimg a: Sn. 222. see 0s ine) ke 39 
GETS AbTOne eee eee eee Ces 8) Wig RT el ae ote oy) 
Buraningeyo le trachea torn en eer Na athe cas 39 
Selectionxol momimiested seed: canes 5-2. 22-525. 52 245-2 stone. 39 
Picking sand jbartimese. 252-4 1 es ae det Ne tes gem PR ee 39 
iRelatedispeciocerc see amen ctr EM feceot aos vad 40 
The Hawaiian sugar-cane leaf-roller (Omiodes accepta Butl.)...........--- 4] 
Marly history, theslawaitanm Iislandse 2-246. 25.2. cese- 2st eee- <5 4] 
Wontrolemme ns Utes tes see teste ete eine tec el across o'= Sisjebiciuinidc ies ele 4] 
| PRIESTESS StS a Na Paes ee Doe ie ey SO ce le ee 41 
7 
