THE CANADIAN ENTOMOLOGIST. 3:^7 



240. E. maimes Sniiih, = ridingsiaiia Git. — This reference is on the 



strength of a comparison of a Calgary specimen with the male type of 



ridingsiana in the British Museum. Grote described his species in 1875 



from the Sierra Nevada, California, though Sir George Hampson 



erroneously attributes it to Colorado, nor is California given in Prof. 

 Smith's monograph or catalogue. Maimes was described in 1903 from 

 five males and seven females from Calgary, Alta.; Brandon, Man.; and 

 Colo. It is very apt to be confused with Rhizagrotis flavicolUs Smith, 

 which is the most closely resembling species I know. Structurally, of 

 course, the male antennfe oi fiavicollis are ciliate only, and in ridingsiajia^ 

 by which name rna'nnes should in future be known, they are serrate-fasci- 

 culate. In maculation flavicollis may best be distinguished by the 

 contrastingly pale collar and costa. In ridingsia7ia the collar is usually a 

 little paler than the thorax, but is less contrasting, and the costal area is 

 more streaky and less clear. It is usually common here, and apparently 

 less so in Manitoba and Saskatchewan. Dr. Dyar has taken it at Field, 

 B. C, and I have one in my collection from Colorado, and two from 

 Stockton, Utah. Sir George Hampson, who has a number of Calgary 

 specimens, bears me out in the above reference (in litt.). 



241. E. pugioTiis Smith. — It seems extremely probable that this will 

 turn out to be quadridentaia Grote & Rob., though as I have not seen the 

 type of the latter I dare not make the reference. The description and 

 figures agree \\\\.\\ pugio?iis, and Dr. Barnes thinks they are the same. I 

 do not possess the description, and omitted to note the type locality, but 

 believe it to be Colorado. Prof. Smith has a male type of piigionis from 

 Colorado, and others, including Calgary specimens, in the series. These 

 I noted had for the most part small, ovate, closed orbicular, and very dark 

 secondaries. His series under quadridentata included a pair of " Xd 

 types" from Stockton, Utah, and seemed to be characterized by a larger, 

 slightly open orbicular, and slightly dark secondaries. They did not 

 satisfy me as distinct, and I have specimens from Calgary, from Stockton, 

 Utah, New Mexico and Colorado, which certainly seem all one species, 

 and in which these characters are variable. As a matter of fact, pugionis 

 as described, from seven males only from Colorado and Calgary, should, 

 by description, have pure white secondaries in that sex. This is by no 

 means always the case, even in one locality. The females dlTer in having 

 collar and costal and inner margins grayish white instead of yellow, and 

 usually darker secondaries. The quadridentata of the British ]\Iuseum 



