Entomolofiicitl Socicfi/ of Brifi.sJi Cohimhia 25 



Conozoa wallula Sciidder, 1880. 



Seudder, Samuel H. 2nd. Rep. U. S. Ent. Comm. p. 27. (1880). 



This species is found in the southern part of the Interior Dry Belt 

 of Britisli Columbia. It frequents dry, sandy spots, congregating to- 

 gether in small colonies. It is particularly partial to dry wagon roads 

 crossing the sandy flats in the Southern Okanagan Valley, especially in 

 the neighbourhood of Pairview. 



Locality records. Vernon, 1897 (E. M. Walker). Kamloops, 1906 

 (W. J. Alexander). Pairview, Westbank, Okanagan Landing, 1919 (E. 

 K. I'.uckell). 



Aerochoreutes carlinianus Thomas, 1870. 



Thomas, Cyrus. Proc. Acad. Nat. Sci. Phila. p. 81. (1870). 



This species has, until recently, been included in the genus Circo- 

 tettix but has now been found to constitute a new genus (Aerochoreutes). 

 This new genus consists of the above species which is divisible into two 

 subspecies ; descriptions of genus and subspecies are given in a recent 

 publication by Mr. J. A. G. Rehn; (Descriptions of new and critical 

 notes upon previously known forms of North American Oedipodinae; 

 second paper; from the Trans. Amer. Ent. Soc. 47, p. 171, No. 811. Issued 

 December 22nd, 1921). 



The following extracts are taken from the above paper. 



"A critical examination of the species which have been referred 

 liy authors to the genus Circotettix, shows most conclusively that we 

 have a' number of aggregations represented in that assemblage, and of 

 these but a few show sufficient affinity to be retained in restricted Circo- 

 tettix, the genotype of which, is, as originally stated by Seudder, Oedi- 

 poda undulata Thomas." 



"The first section which it is necessary to segregate is that containing 

 tlie forms of the carlinianus type. This we find to represent a valid 

 genus, showing slightly more affinity- with the Old World genus Bryo- 

 dema Pieber, than with true Circotettix." "The genus is composed of 

 one species, which is divisible into two well-marked geographic races, 

 each occupying a considerable territory and their intergradation demon- 

 strated in the material before us. Of these races, one (carlinianus car- 

 linianus) is eastern and northern, occuring in the northern Great Plains, 

 northern Rocky Mountains and central British Columbia, while the 

 other, which is new (carlinianus strepitus), is a form of the Great Basin 

 and Green River regions." 



"Actual intermediates between tlie two races are before us from 

 Chilcotin, British Columbia ; La Chappies, Yakima River, Washington ; 

 and Salt Lake Valley, Utah. When the distribution of typical carlinianus 

 is compared with that of the subspecies strepitus, it will be seen tliat tlie 

 former is a more northern and eastern type, and that it is not stable 



