Ewing — Significance of Parasitism in Acarina. 33 



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



Conurus. 

 P. squatarolae (Can.) — Charadrius squatarola (L.), C. pluvialls L. 

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



curonicus Gm., Totanus hypoleucus (L.), and 

 other marsh birds. 

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



species. 

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

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



dae. 

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



podius bruijni (Oust.). 

 P. delibatus Robin — Corvus corone L., C. cornix L., C. corax L., C. frugi- 



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

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

 dae, and species In Vulturidae. 

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



(Vieill.). 

 P. uncinatus Megn. — Steganura paradisea (L.). Other Fringillidae. 

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

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

 (L.). 

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

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

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



Europe and America. 

 P, biemarginatus M6gn. & Trt. — Capito auratus Dumont, and on other 



species of Capitonidae. 

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



tus dicolorus L. Other species of 

 Rhamphastidae. 

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



nus leucocephalus (Vieill.). Other spe- 

 cies of Bucerotidae. 

 P, attenuaius Megn. & 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. selenura Megn. & Trt. — Symphemia semipalmata (Gm.), 



Limosa lapponica (L.). 

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



L. 

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

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

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



cops cinereus (Blyth). 



