THE CANADIAN ENTOMOLOGIST, 



examine them carefully with the microscope while still alive and moving. 



The American literature on this subject, besides being quite scanty, is 



widely scattered, and some of the papers now quite difficult to procure. 



Family Trombidid/« Leach. 

 I. Tdranychus Dufour. 

 I — T. TELARius Linn. Packard, Guide to Study of Insects, 660 ; Mur- 

 ray, Economic Entom., 97* ; Saunders, Can. Ent. xii, 237* (1880) ; 

 Insects Inj. to Fruit, 355* (18S3) ; Ontario Entom. Rep., xi, 70^' 

 (1880) ; Forbes, Til. Rep., xiii., 106 (1884) ; Standard Nat. Hist, 

 ii., 103. 



IL Trombidium Fab. 

 I — T. PARASiTicuM Murray. Economic Entom., 129* (1877); Ont. Entom. 

 Rep., xi., 71 (1880). 

 Atoma parasiticum, Latr. (1806). Riley, Mo. Rep., vii., 176* (1875). 

 Trombidium muscarum, Riley. First Rep. LT. S. Entom. Com. 306-311 

 (1878). 

 2 — T. SERiCEUM Say. Jour, Phila. Acad, ii., 70 (1821) ; Coll. Writings 

 ii., 16 ; Riley, Mo. Rep. vii., 175* (1875), ^t. Supp., 63; Murray, 

 Economic Entom. 138* (1877) ; Ont. Entom. Rep. xi., 72 (1880). 

 3 — T. GRYLLARiUM Murray. Economic Entom. 136* (1877). 



Atoma gryllaria, LeBaron. 111. Rep. ii., 61* (1871). 

 4 — T. SCABRUM Say. Jour. Phila. Acad, ii., 69 (1821) ; Coll. Writings 



ii., 16 ; Riley, Mo. Rep. vii, 175 (1875). 

 5 — T. giganteum Riley. First Rep. U. S. Entom. Com., 3i2 (1878). 

 6 — T. BULBiPES Packard. Mass. Rep. iii., 26* (1873) ; Murray, Econ- 

 omic Entom. 136*; Ont. Ent. Rep. xi., 71. 



LARVAL FORMS INCERTIS SEDiE. 



I — Leptus (Trombidium ?) Americanus Riley, Mo. Rep. vi , 122 (1874) ; 



Murray, Economic Entom., 1 16.* 

 2 — \j^VT\3^( Trombidium ?) arane^ Say, Jour. Phila. Acad, ii., 80 (1821) ; 



Coll. Writings ii., 23. 

 3 — Leptus (Trombidium ?) hispus Say, Jour. Phila. Acad, ii., 81 (1821) ; 



Coll, Writings ii., 23. 

 4 — 'L£.v'xvs( Trombidium ?) irritans Riley, Mo. Rep. vi., 122 (1874); 



Murray, Economic Entom., u6*j Ontario Entom. Rep. xi., 71. 



* \ star indicates an illustration at the reference marked. 



