Parasite 

 Chalcogonatopus 

 gigas 

 optabilis 



(lecoratus 

 pseudochromu!^ 



Echthrodelphax 



faircliiklii 



nipricollis 



l)ifasciatus 



Dr villus 



ormenidis 



Xeodryinus 

 koebelei 

 nelsoni 

 raptor 



Paradryinus 

 koebelei 



venator 



threnodes 



gigas 



leptias 



varipes 



( 'lik)rodryinus 

 ])allidns 

 psendophanes 



'riiauniatodryiims 



koel^elei 

 Rukoe])eleia 



inirabilis 



xxiii 

 Host 



Tartessus syrtidis, nymph. 

 "Deltocephalus, nymph, and Xephctct- 

 tix, adult. 

 IMirvnophyes. 

 i'hlepsius. 



'erkinsiella saccharicida, Aloha ipomoe- 



ac, etc., nymphs. 

 / .\'arious small Delphacids, Hadcodel- 



l)hax, forms allied to Liburnia, etc., 



nymphs. 

 L Liburnia and allied f<M-ms, nymphs. 



( Jrmenis pruinosa and septentrionalis, 

 n\-mphs. 



Colgar peracutus nymph. 

 Colgar peracutus nymph. 

 V Siphanta, Sephena, Aphanophantia, Pri- 



vesa, Scolypopa. Massila, GaetuHa, 



n\m]:)hs. 



Colgar. Siphanta. Massila, Aphanophan- 

 tia (?) nymphs. 

 Privesa, Massila and Siphanta nymphs. 

 Siphanta and Colgar. nyni])hs. 

 Xot bred. 



Hasta hastata. nymph. 

 Si])hanta. nvmph. 



Xymph of (probably) Siphanta. 

 Xot bred. 



'S'oung nymph of Siphanta. 



I'ruchomorpha. nymph, and Ijoth short 

 and long-winged adult. 



