ART. 8 CHIGGEB MITES OF THE NEW WOKLD EWING 7 



The status of this species has not been definitely determined. It 

 appears to be a Troiiibicula sp., and Oudemans claims it is the same 

 as his Microthrombidiuni helleri^ which is a typical Tronibicula 

 species. 



TROMBICULA BISIGNATA Ewing 



1929, Tronibicula hisignata Ewing, Ent. News, vol. 40, p. 295. 



Type host. — Meadow mouse {Microtus pennsylvanicus pennsyl- 

 vanicus). 



Type locality. — Mount Katahdin, Me. 



TROMBICULA BRASILIENSIS Ewing 



1925. Trombicula hrasiliensis Ewing, Proc. Ent. Soc. Washiugton, vol. 27, p. 92. 

 Type host.—m. 

 Type locality. — Manaos, Brazil. 



TROMBICULA BRUYANTI (OndemanB) 



1910. MicrotJuonibidium hrnyanti Oudemans. Ent. Ber., vol. 3, no. .'i4, p. 85; 

 1912, Zool. Jahrb., Suppl. 14, Heft 1, p. 26, fig. F. 



Type host. — Opossum {Didelphis opossum). 

 Type locality. — South Brazil. 



TROMBICULA COARCTATA (Bcrlese) 



1888. Trombidium coarctaium Bbrlesk, Bull. Soc. Ent. Itallana, Ann. 20, p. 179, 

 Tab. V, fig. 5. — 1901, Leonardi, Zool. Anz., Band 25, p. 17. 



1912. Trombicula coarctata Beklese, Redia, vol. 80, p. 91, fig. 42.— 1921, Ewing, 

 Ann. Ent. Soc. Amer., vol. 13, p. 382, fig. 1. 



Type host. — Described from adults. 



Type locality. — Buenos Aires, Argentina, and Rio Apa, Paraguay. 

 This species has been confused by some authors with the Kedani 

 mite, Tromhicula aham.ushi (Brumpt), but it is distinct. 



TROMBICULA FLUX van Thiel 



1930. Tronibicula flui van Thiel, Parasitology, vol. 22, p. 347, figs. 1, 2. 



Type host. — Man. 



Type locality. — Surinam. 



This species may be a synonym of Acarus hatatas Linnaeus. 



TROMBICULA GOLDII (Oudemans) 



1910. MicrothromUdium yoldii Oudemans, Ent. Ber., vol. 3, no. 54, p. 84; ]912, 

 Zool. Jahrb., Suppl. 14, Heft 1, p. 13, fig. B. 



Type host. — Dasyprocia agouti. 

 Type locality. — Brazil. 



