XIV LIST OF ILLUSTRATIONS. 



Page. 



Tarso7U'mus latux, male 



Pigmeophorus americamis, from above, and tarsus enlarged 



Pigmeophorus amerieanus, from below 



Bisparipes amerieanus, from below, and claw 



Tyroglyphus sp. (Pergande) 



Hypopus of a Tyroglyphus, from below 



Hisliostoina americana 



Beak of Histiostoma amerieana 



Leg I and tiji of mandible of Histio^toina americauii 



Glyciphagvii ohesus 



CarpogJyphus passularum, male 



Aleurobius farinw 



Histiogaster malus, female 



Histiogaster malus, mandible and venter 



Tyroglyphus lintneri, female 



Ehizoglyphus rhizophagus 



Triehotarsus xyloeop.r; nymph, and claw enlarged 



Canestrinia sp. , female, from below 



Analgesid 



Caroncle of Pterolichus 



Leg of Analges 



Pterolichus sp. (near Delibatus), on Condor 



Hypoderas columhx, a stage of falculifer ( Kellicott ) 



Alloptes microphsethon, and caroncle 



Analges passerinus, female 



Analges passerinus, male 



Megninia tyrrelli 



Megninia alhida (after Tyrrell ) 



Pteronyssus tyrrelli (after Haller) 



AUanalges gracilepinnatus 



Schizocarpus mingaudi, female, side view 



Schizocarpus mingaudi, male and female together 



Sarcoptes hominis, male 



Sarcoptes hominis, female 



Leg of a Sarcoptes 



Sarcoptes in her burrow, and eggs 



Cnemidocop)tes midans, female 



Otodectes cynotis, female 



Otodectes cynotis, tip of male abdomen and hind legs 



Psoroptes communis, var. ovis, female and caroncle enlarged 



Psoroptes communis, var. oins, male 100 



Cytoleichus nudus 100 



Laminosioptes cysticola 1 01 



Eriophyes sp. , side view 101 



Egg of an Eriophyes in gall 102 



Eriophyes gossypii, anterior part of body 102 



Nail-galls of an Eriophyes 103 



Rib-galls of an Eriophyes 103 



Round-galls of an Eriophyes 105 



Section of an Erineum on leaf 105 



Eriophyes vitis 105 



Phlceocoptes sp. , side view 106 



Demodex folliculorum ;.. 107 



