356 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



Specimens examined. — Two male, four females, Idaho; one female. 

 Blue Lake, Idaho; one female, Flush, Oregon; two females, four males, 

 Eddy, Route County, Colorado. 



This is merely a color variety, and gnides quite imperceptibly into 

 the tj^pical form. 



ANABRUS SIMPLEX var. MACULATUS, new variety. 



Description.. — Averaging- smaller than the typical form. The color 

 varies from yellowish brown to dark brown, the abdomen mottled 

 regularly with gray. The low^er margins of the lateral lobes of the 

 thorax is sometimes yellowish. The subgenital lobes of the female in 

 all specimens examined extend to the apex of the subgenital plate; 

 ovipositor but little or no longer than the posterior femora and usually 

 considerably curved upwards. 



Measurem.ents. — Length, pronotum, male, 10-11 mm., female, 9.5-12; 

 posterior femora, male, 17-17.6, female, 17-20; ovipositor, 17-20. 



Type.—Q2X. No. 10177, U. S. National Museum. 



Specimens examined. — Two males, five females, Fort Walsh, Brit- 

 ish Columbia, September; eight males, six females. Mount Rainier, 

 Washington, August 25; one female, Bismarck, North Dakota, Jul} ; 

 one female, New Mexico; one male, one female, Nebraska, labeled 

 Lincoln, but probabl}^ taken one hundred miles or more northwest of 

 there in the sand hills. 



The maculation of the abdomen of this form gives it somewhat the 

 appearance of being hairy. The female f ronj Bismarck, North Dakota, 

 is labeled h\ Thomas -a.^ jni rpurascens. It is the one figured in How- 

 ard's Insect Book. The unusual color, especially of fresh specimens, 

 gives this form quite a characteristic appearance. Intermediate forms, 

 however, lead from it to tjq^ical simpl.e.t\ The series taken on Mount 

 Rainier b}^ Mr. Burke was examined when quite fresh and the speci- 

 mens were found to be quite uniform in size and coloration. The 

 grayish mottling of the abdomen has a tendenc}' to fade out in dried 

 specimens. These Mount Rainier specimens were found singing- in 

 the sun a])out noon. 



ANABRUS SIMPLEX var. COLORADUS Thomas. 



Description. — A small subalpine or alpine form. The color of liv- 

 ing specimens seems to be usually grass green, but there is variation 

 in color here as in the typical form. The subgenital lobes of the 

 female vary in backward extension, some reaching- the apex of the 

 subg-enital i)late and others falling somewhat short of it. The ovipos- 

 itor is more or less upcurved and varies in length from slightly longer 

 to much longer than the posterior femora. 



Cabinet specimens of this form exhil)it all shades of coloration. 

 The tj^pe-specimens, which were preserved in spirits and probabl}^ 



II 



