12 BULLETIN 168, UNITED STATES NATIONAL MUSEUM 



Northwest Territories: Bernard Harbour, June 18, on a pond in a swamp, 



F. Johansen (National Collection, Ottawa). 

 Greenland: Umanak, July 22, in moss, W. E. Ekblaw (American Museum of 



Natural History, University of Illinois). 



Genus ANUROPHORUS Nicolet 



Anurophorus Nicolet, 1841, p. 52 (part); 1847, p. 384 (part). — Tullberg, 1869, 

 p. 12; 1871, p. 154; 1872, p. 53.— Absolon, 1901, p. 212.— Bokner, 1906, 

 p. 161. — LiNNANiEMi (Axelson), 1912, p. 105. 



Adicranus Bourlet, 1841-42, p. 126. 



Lipura Gervais, 1844, p. 440 (part). 



Bourletia MacGillivray, 1893, p. 313. 



Genotype. — Anurophorus laricis Nicolet. 



Furcula and anal spines absent. Body subcylindrical, rounded 

 posteriorly, with segments mostly subequal in length. Anus ventral. 

 Pronotum membranous. Abdominal segments without ankylosis. 

 Eyes eight on each side. Postantennal organs present, of the isoto- 

 mine type. Antennae cylindrical, 4-segmented. Unguiculus present 

 but rudimentary. Body setae simple. Integument smooth, reticulate. 



ANUROPHORUS LARICIS Nicolet 



Plate 2, Figures 10-15 



Anurophorus laricis Nicolet, 1841, p. 53; 1847, p. 385. — Tullberg, 1869, 

 p. 13; 1871, p. 154; 1872, p. 53.— Reuter, L. and O. M., 1880, p. 208.— 

 VON Dalla Torre, 1888, p. 158; 1895, p. 14.— Uzel, 1890, p. 74.— Schott, 

 1894, p. 86; 1902, p. 18.— Reuter, 1895, p. 33.— Lie-Pettersen, 1896, 

 p. 20; 1907, p. 60.— ScHAFFER, 1896, p. 164; 1900a, p. 240.— Poppe and 

 ScHAFFER, 1897, p. 266.— Carl, 1899, p. 283; 1901, p. 246.— Carpenter 

 and Evans, 1899, p. 257.— Wahlgren, 1899a, p. 185; 1906a, p. 222; 1906b, 

 p. 251; 1919, p. 745.— Absolon, 1900a, p. 25; 1900b, p. 414; 1901, p. 213.— 

 WiLLEM, 1900, p. 28; 1902a, p. 21.— Borner, 1901a, p. 43; 1901b, p. 9; 

 1901c, p. 341; 1902a, p. 105; 1903, p. 171.— Evans, 1901a, p. 156; 1901b, 

 p. 153; 1908, p. 197.— Becker, 1902, p. 26.— Krausbauer, 1902, p. 69.— 

 Agren, 1903, p. 131; 1904, p. 14.— Guthrie, 1903, p. 98.— Axelson, 1904, 

 p. 68; 1905b, p. 29; 1906, p. 11.— Linnaniemi (Axelson), 1907, p. 45; 

 1911, p. 12; 1912, p. 105.— Carpenter, 1907, p. 54.— Collinge, 1910, 

 p. 10. — Collinge and Shoebotham, 1910, p. 110.— Bartholin, 1916, p. 

 168.— Stack, 1921, p. 158.— Brown, 1923, p. 262.— Denis, 1924a, p. 259; 

 1924d, p. 210.— Handschin, 1924a, p. 109; 1924b, p. 85; 1928c, p. 126; 

 1929, p. 55.— Womerslet, 1924a, p. 31; 1925, p. 219; 1927, p. 376. 



Adicranus corticinus Bourlet, 1841-42, p. 127. 



Lipura laricis Gervais, 1844, p. 442. 



Lipura corticina Gervais, 1844, p. 442. — Lubbock, 1873, p. 191. — Parona, 

 1879, p. 608.— ToMosvARY, 1882, p. 125.— Parfitt, 1891, p. 349. 



Bourletia laricis MacGillivray, 1893, p. 313. 



Description. — Dark blue with irregular whitish spots (pi. 2, fig. 10). 

 Antennae blue; legs pale blue. Eyes (pi. 2, fig. 11) eight on each 

 side, unequal. Postantennal organ (pi. 2, fig. 12) elliptical, from 

 two to three times as long as the diameter of an adjacent eye, situ- 

 ated in a narrow groove (pi. 2, fig. 11) between the eyes and the base 



