370 T. D. A. COCKERELL. 



PSEUDOSCOBPIONES. 



977. gen.? sp. ? A dark brown species under rocks, Old Beddoes' Eanch. A 



different species was found at the Cusack Eanch. 



ACARI. 



978. Ixodes sp. Ouly occasionally found. 



MYRIOPODA. 



979. Parajulus venustus (Wood), see Proc. U. S. Nat. Mus. 1888, p. 343. 



980. Geophilus umbraticus McNeill., see Proc. U. S. Nat. Mus. 1888, p. 346. 



981. Lithobius kochi Stuxb. var. coloradensis v. nov., see Proc. U. S. Nat. Mus. 



1888, p. 348. Mr. Bollman gave a description of this form, which he 

 at first thought to be a new species, but it differs little from true 

 koehi, found at Sancelito, Cal. I give it a varietal name to indicate 

 that there is a difference between the two forms, so widely separated 

 geographically. 



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BIBLIOGRAPHY. 



Further information concerning the insects of the mid-alpine of Custer County, 

 Colorado, may be obtained by reference to the following: 



"Entomologist," 1887, p. 237; 1888, pp. 298-305; 1889, pp. 128, 185, 188; 1890, 

 pp. 19, 74-75. 172, 278-282, 388 ; 1891, p. 229. 



"Entomologist's Monthly Magazine," 1888, pp. 213, 232, 272, 67, 92, 93, 164: 

 1889, 186. 213, 255, 308, 324, 363, 382; 1890, p. 109, 191, 331, 324 ; 1891, pp. 245- 

 246. 190-191. 



"Canadian Entomologist," 1888. pp. 156, 176, 178. 200, 201; 1889, pp. 20, 60, 

 140, 220; 1890, pp. 56, 76; 1891, p. 61 ; 1892. p. 101; 1892, p. 297. 



"West American Scientist," 1887, p. 217; 1888, pp. 7, 41, 60; 1889. p. 47, 52, 

 103-106. 



"Insect Life," 1888, p. 58; 1889, pp. 231, 145; 1890, p. 154; 1891, pp. 148, 158; 

 1892, p. 268. 



" Proc. South London Entom. Soc." for 1887 [publ. 1888] p. 72. For 1888-89 

 [1891], pp. 41, 56, 62, 63. 126, 132, 138, 154. 



"Psyche," 1888, p. 120; 1889, p. 283; 1890, p. 348. 



"Colorado Biological Association" Reports 1-3 (1888), 4-13 (1889), published in 

 Custer County Courant, also separately. 



" Entomologica Americana," 1889, pp. 33, .57. 



"Proc. U. S. Nat. Mus.," 1888 [1889], p. 611 ; vol. xii (1890), pp. 394, 395, 418- 

 419; 1888, pp. 343, 346, 348. 



"Science Gossip," 1889, p. 242. 



" Entomological News," 1890, pp. 4, 31, 58, 79-80, 75, 65-68, 161. 



Teansactions Am. Ent. Soc, 1891, p. 31; 1890 (PhycitidjB), pp. 205, 166. 



"Trans. Ent. Soc. Lond.," 1890, pp. xvi-xvii. 



W. H. Ashmead. On the Hymenoptera of Colorado (Bull, i, Colo. Biol. Asso'u) 

 pp. 47, 1890. 



P. S. Dec. 22. — Photopsis east of Colorado. — The statement on p. 343, that no 

 Photopsis is known east of Colorado, must be modified. In the Washburn Col- 

 ledge Bulletin for 1886, p. 211, is a list of Hyraenopteia found in Barber County, 

 Kansas, in which are included Photopsis tapajos Blake, aud P. unicolor Cress. 



