11 
pedibus flavis femoribus posticis nigris; alis immacnlatis." (Kongl. 
Vetenskaps — Akacl. Haiidlingar, 1825, p. 365.) 
An Indian species, Aphelinus thece Cameron, has been reared by Mr. 
E. E. Green, of Punduloya, Ceylon, from Aspidiotus thece, and described 
by Cameron in the Mem. and Proc. Manchester Lit. and Philosoph. 
Soc, series 4, vol. IV, p. 183. 
HOST RELATIONS OF THE SPECIES HERE TREATED. 
LIST OF PARASITES AND HOSTS. 
Parasite. Host. 
Eretmocerns corni Aleyrodes corni. 
Eretmocerus californicus Aleyrodes on Quercus agrifolia. 
Pteroptrix flavimedia Aleyrodes spp. on Iris. 
Fuchsia. 
Sonchus. 
Willow. 
Sambucus. 
Aquilegia. 
Perissopterus pulchellus Asterolecanium on basswood. 
Chiouaspis pinifolise. 
Prosopophora on cottonwood. 
Aspidiotus sp. on currant. 
Perissopterus inexicanus Ceroplastes sp. 
Pseudococcus yucca'. 
Lecanium hesperiduni. 
Aphelinus niali Schizoneura lanigera. 
Glyphina eragrostidis. 
Aphis brassicaB. 
Pemphigus fraxinifolii. 
Aphis monardse. 
Sipbonophora rostB. 
Aphelinus my tilaspidis Mytilaspis pomoruni. 
Chiouaspis piuifolia'. 
Diaspis carueli. 
Aspidiotus perniciosus. 
Aphelinus abnbrmis Mytilaspis pomorum. 
Aphelinus diaspidis Diaspis rosse. 
Mytilaspis sp. on Dycaste. 
Aspidiotus juglans-regia3. 
Aphelinus fuscipennis Aspidiotus perniciosus. 
Aspidiotus camellia?. 
Chionasjns euonymi. 
Mytilaspis gloverii. 
Mytilaspis pomorum. 
Encarsia luteola Aleyrodes sp. 
Encarsia coquillettii Aleyrodes sp. on Sonchus. 
Encarsia angelica Aleyrodes sp. on willow. 
Aspidiotiphagus citrinus Aspidiotus aurantii var. citrinus. 
Aspidiotus perniciosus. 
Aspidiotus ficus. 
Coccophagus lecanii Lecanium quercitronis. 
Pulvinaria innumerabilis. 
Lecanium -Druinosum. 
