THE DECTICINM OF NOR TH A MERICA—CA UDELL. 355 



Fourforinsof this species iirc here recognized and nunied. (JoJoraduH 

 is probabl}" worthy of varietal distinction, .but the others are given 

 namesonl3^asa matter of convenience, not l)eing considered as of more 

 than mere color- variational distinctness. These forms may be sepa- 

 rated by the following key. 



KEY TO THK VARIETIES OF ANAlilU'S SIMPLEX. 



A. Larger pronotuiu generally more than 1 1 nun. in length. 

 B. Color variable but not yhiuing black. 



C. Abdomen uniform in color ^'nnphw, p. 355 



C Abdomen mottled nniformly with gray nKicnldlnx, p. o56 



V/. Color shining black, the lower margin of the pronotuiu, the posterior legs and 

 the middle portion of the ovipositor sometimes lighter in color., viijni, p. 355 

 A^. Smaller pronotum generally no more than 11 nun. in length. 



B. TJsualcolorbrownor green, the abdomen not marked with gray. coloTadim, p. 35() 

 B'. Usual color varying shades of brown, the abdomen mottled with gray. 



iiiacukUiis, p. r>5(> 



The typical form, has for synonymic pa rjyur<(sccn.'^ V\\\qv and siiiuJix 

 Scudder. Specimens taken at one locality. Fort Collins, Colorado, 

 exhibit ovipositors nearh" straight and scarcely longer than the 

 posterior femora to (|uite strongly curved upward 

 and consideral)ly longer than the posterior femora. 

 These specimens also vary in color from yello>vish 

 to dark shiny brown. fig. 47.— anabrcs sm- 



This foi-m, as here considered, seldom has the '''^'''■'^- ''kk^''^ o"" 



MALK. 



pronotum less than 12 mm. long, rarel}' but 11.5. 

 It ranges from the plains of Nebraska to California and occurs from a 

 few hundred feet altitude to several thousands, in the mountainous 

 districts of consideral^le elevation merging into the stimted form 

 known as coloradns. The specimens occurring in Nebraska and other 

 eastern localities are usually lighter in color than ones fro»n the west, 

 and the posterior femora seem to be somewhat less robust and a little 

 shorter. 



ANABRUS SIMPLEX var. NIGRA, new variety. 



Desert i>t ton. — This is a form distinguished ])y its shiny black color. 

 The lower margins of the lateral lobes of the thorax are sometimes 

 yellowish and the posterior legs and the middle portion of the oviposi- 

 tor of the females are often lighter in color. The snbgenital lobes of 

 the females reach the apex of the snbgenital plate and the ovipositor 

 is moderately upcurved and considera])ly longer than the posterior 

 femora. A longer series woidd pro])ably show variation in these 

 respects as there is in the typical form. 



Measurements. — Length, pronotum male 12.5-14 mm., female 11.. 5-11; 

 posterior femora, male 20-21, female 20-24; ovipositor 23-26. 



Ti/j>e.—Q.2it. No. 10176, IT. H. National Museum. 



