Ewing — Significance of Parasitism in Acarina. 33 



p. venustissimus Trt. — Conurus canicularls (L.). and other species of 



Conurus. 

 P. sguatarolae (Can.) — Charadrius squatarola (L.), C. pluvlalls L. 

 P. charadrii (Can.) — Charadrius hiaticula L., C. alexandrinus L., C. 

 curonlcus Gm., Tetanus hypoleucus (L.), and 

 other marsh birds. 

 P. obtusus Robin — Caccabis rufa (L.), C. saxatilis (Meyer), Perdix 



species. 

 P. ornatus Megn. & Trt. — Upon parrots. 

 P. ardeae (Can.) — Botaurus stellaris (L.). Other species of fam. Ardel- 



dae. 

 P. gracilis Trt. — Megapodlus forsteni Temm., M. freycineti Temm., Aepy- 



podius bruijni (Oust.). 



P. delihatus Robin — Corvus corone L., C. comix L., C. corax L., C. frugi- 



legus L., C. scapulatus Daud., Corvultur albi- 



collis (Lath.). Other related species of Corvl- 



dae, and species In Vulturidae. 



P. musophagi Trt. — Schizoris africana (Lath.). Tauracus buffoni 



(Vieill.). 

 P. uncinatus M6gn. — Steganura paradlsea (L.). Other Fringillidae. 

 P. nisi (Can.) — Accipiter nisus (L.), Clrcaetus gallicus (Gm.), Buteo 

 buteo (L.), Pernis apivorus (L.), Circus pygarus 

 (L.). 

 P. intermedins Megn. & Trt. — Upon diurnal birds of prey. 

 P. bicandatus (Gerv.) — Struthio camelus L., Rhea americana (L.). 

 P. cuculi M6gn. & Trt. — Cuculus canorus L., and upon related genera in 



Europe and America. 

 P. hiemarginatus Megn. & Trt. — Capito auratus Dumont, and on other 



species of Capltonidae. 

 P. rhamphastinus Megn. & Trt. — Pteroglossus aracari (L.), Rhamphas- 



tus dicolorus L. Other species of 

 Rhamphastidae. 

 P. circiniger M6gn. & Trt. — Rhytidoceros plicatus (Forst.), Cranorrhl- 



nus leucocephalus (Vieill.). Other spe- 

 cies of Bucerotidae. 

 P. attenuatus M6gn. & Trt. — On species of Bucerotidae. 

 P. ninnii (Can.) — Numenius arquatus (L.), N. tenuirostris Vieill. 

 P. limosae (Buchh.) — Species of LImosa, Totanus fuscus (L.). 

 P. limosae var. selemira Megn. & Trt.— Symphemia semipalmata (Gm.), 



Limosa lapponlca (L.). 

 P. totani (Can.)— Totanus calidris (L.), T. pugnax (L.), Tringa alplna 



L. 

 P. proctogamus Trt.— Fullca atra L., Porphyrio caeruleus (Vand.). 

 P. buchholzi (Can.)— Limosa limosa (L.), Charadrius squatarola (L.). 

 P. buchholzi var. hastigera Megn. & Trt.— Tringa alpina L., Microsar- 



cops cinereus (Blyth). 



