COLLEMBOLA OF THE FAMILY ISOTOMIDAE 75 



Iowa: Ames, March 31, April 7, J. E. Guthrie. Spirit Lake, April 7, J. E. 



Guthrie. 

 Wisconsin: Two Rivers, August, September. 



Minnesota: Minneapolis, J. E. Guthrie (University of Minnesota). 

 Tennessee: Knoxville, February 18, C. N. and G. G. Ainslie. 

 Georgia: St. Simon Island, February 16, J. C. Bradley. 

 Florida: Gainesville, January 12, T. H. Hubbell. Marion County, February 20, 



T. H. Hubbell. 

 Louisiana: Tallulah, January 15, April 2, 7, 9, 18. 

 Texas: Waco, G. W. Belfrage (Museum of Comparative Zoology). 

 California: Palo Alto, V. L. Kellogg and L. M. Bremner (Stanford University). 



Claremont-Laguna region, January, December, G. A. Bacon. 

 Canada: Arnprior, Ontario, January 10, March, May, September, C. Macna- 



mara. Toronto, Ontario, June 26, R. J. Crew. 



ISOTOMURUS PALUSTRIS (Muller) variety PRASINUS (Reuler) 



Isotoma stuxbergi var. prasina Reuter, 1891, p. 229. 



Isolomn palustris var. prasina Schott, 1894, p. 66. — von Dalla Torre, 1895, 

 p. 10. — Reuter, 1895, p. 26. — MacGillivray, 1896, p. 48. — Schaffer, 

 1896, p. 186; 1898, p. 403; 1900a, p. 246, 1900b, p. 256.— Poppe and Schaf- 

 fer, 1897, p. 268.— Carl, 1899, p. 312; 1901, p. 262.— Carpenter and 

 Evans, 1899, p. 247.— Wahlgren, 1899c, p. 850; 1906b, p. 255; 1907a, p. 

 5. — Borner, 1901a, p. 50. — Becker, 1902, p. 26. — Kratjsbauer, 1902, p. 

 40.— Agren, 1903, p. 133.— FoLsoM, 1919a, p. 12. 



Isotoma palustris var. pallida Schaffer, 1896, p. 186. — Borner, 1901a, p. 50. — 

 Kratjsbauer, 1902, p. 66. 



Isotomurus palustris var. prasina Axelson, 1905b, p. 35; 1906, p. 16. — Wahl- 

 gren, 1907a, p. 5. — Linnaniemi (Axelson), 1907, p. 30; 1911, p. 19; 1912, 

 p. 187.— Brown, 1918, p. 186.— Denis, 1921, p. 126.— Stach, 1921, p. 164.— 

 Handschin, 1929, p. 73. 



Description. — Yellowish green or pale yellowish, varying sometimes 

 into yellowish red or brownish; imicolorous, or with a trace of the 

 median dorsal stripe. Length as great as 4.5 mm. 



Specimens of this variety from Cuba are green, with narrowly 

 elliptical postantennal organs twace as long as the diameter of an 

 adjacent eye. 



Distribution. — The variety jjrasinus has been recorded from Sweden, 

 Finland, Poland, Germany, France, Switzerland, England, Scotland, 

 Nova Zembla, Ellesmere Land, Siberia, and Bismarck Archipelago. 



Massachusetts: Arlington, August 2, 



New York: Lakeville, October 9, E. A. Maynard. Voorhecsville, August 30 



M. D. Leonard (New York State Museum). 

 Illinois: Anna, May 6, 7, T. H. Prison (lUinois State Natural History Survey) 



Glenview, December 27, A. R. Park (IlUnois State Natural History Survey) 

 Alaska: Demarcation Point, May 16, F. Johansen (National Collection, Ottawa) 

 Canada: Bernard Harbour, Northwest Territories, May 25, June 16, 18, 25 



July 9, F. Johansen (National Collection, Ottawa). Arnprior, Ontario 



March 10, August, C. Macnamara. 

 Cuba: Habana, C. F. Baker. 



