274 THE CANADIAN ENTOMOLOGIST. 



53. plunibea Packard. (!) ibid., p. 35 ; Guide to the Study of Insects, 



pi. X., figs. 6, 7. Mass., Long Island, Ohio. 



54. piirpiirascens Packard. (!) Syn." Thysan. Essex Co. (1S73), p. 34. 



Texas. 



55. quadrioculata Tullberg. Fort ofver. sv. Podr. (187 1), p, 152; 



Collembola borealia (1876), p. 36. Greenland, Northern Europe. 



56. tricolor Packard. (!) Syn. Thysan. Essex Co. (1873), p. 34. Mass., 



D. C, Texas. 



57. Walkerii Packard. (!) Memoirs Peab. Acad. Sci. 2 (1873), p. 19; 



Syn, Thysan. Essex Co. (1873), p. 34. Mass., Eastern, Ohio. 



Family PODURID.E, Burmeister. 



Genus Achorutes, Templeton. 



58. armatus Nicolet. Podura armata Nic , Resch. p. serv. a 1' Hist, des 



Podur. (1841), p. 57. Achorutes armatus Lubbock, Monog. 

 Coliem. and Thysan. (1873), p. 180; Tullberg, Fort ofver Sv. 

 Podur, (1871), p. 153; Collembola borealia (1876), p. 38, Tab. 

 X., fig. 35. Greenland, Siberia. 



59. boletivorus Packard. (!) Syn. Thysan. Essex Co. (1873), p 30. 



Maine, Mass., New York, D. C. 



60. marmorata Packard. (!) Ibid., p. 30. Maine, (?) Ohio. 



61. nivicola Fitch. (!) Podura nivicola Fitch,Emmon's Journ. Sci. Agr., 



v., (1846-47), p. 151; Achorutes nivicola Pack., Syn. Thysan 

 Essex Co. (1873), p. 29; Lintner, Second Kept. N. Y. Entom., p. 

 203. Mass., New York, Penn., (?) Wisconsin. 



62. pratoruni Packard. (!) Syn. Thysan. Essex Co. (1873), p. 31. 



Maine, New York. 



63. texensis Packard. Ibid., p. 30. Texas. 



Genus Xenylla, Tullberg. 



64. humicola Fabricius. Podura humicola Fab., Fauna Groen., (1780), 



p. 213 ; Achorutes humicola Lubbock, Monog. Coliem. and Thy- 



