NORTH AMERICAN I,EPIDOPTKRA. 39 



l>ESt'RII>'riOXS <»F \KW C^KKI-:!!.! AND MPI^XIKK 

 OF XOCTIJID.K. 



BY JOHN B. SMITH, SO. D. 



One of the least attractive parts of entomological work is, to me, 

 the description of new species, and wherever possible I put it off 

 until I can monograph the groups to which the species belong; first, 

 because there is less danger of making bad synonyms ; second, be- 

 cause the species can be compared by means of tabular synopses, and 

 recognition rendered more easy. There is a difficulty in practically 

 adhering to this rule, from the fact that new species are constantly 

 turning up, and that a monograph scarcely off the press, becomes 

 incomplete as soon as a batch of material is received from a new 

 locality. While it is unusual to receive new material now-a-days 

 from the f^astern, jNIiddle or Central States, the Southern States still 

 contain much that will have to be described, and the supply of new 

 species from the Rocky Mountain chains seems inexhaustible. 



By far the greater number of species described in this paper are 

 of this Rocky INIountain fauna, and the bulk of them come from a 

 few collectors. 



Mr. Bruce, as usual, contributes a large share of the species, some 

 of them collected in 1892, but others taken years back, and which 

 have been awaiting further material. Not all the species determined 

 as undeseribed in his collections of 1892 are hei'e characterized ; a 

 number of them were represented in the material sent me by single 

 specimens only, and most of these were returned to Mr. Bruce with a 

 request for additional examples if they were to be had. As I have 

 had no response, I take it that there are no further specimens avail- 

 able. 



Dr. William Barnes, Decatur, 111., sent me for determination a 

 very large and most interesting lot of specimens, mostly taken at 

 Glen wood Springs, Colo. This lot is especially valuable, because the 

 collections covered a large part of the season, because the specimens 

 are dated, and because the locality is exact, and not merely " Colo." 



Mr. Thomas E. Bean, Field P. O., British Columbia, sent me a 

 very interesting lot of specimens taken there and at Laggan, Al- 

 berta Province, and containing some quite remarkable species. 



TRANS. AM. ENT. SOC. XXI. FEBRUARY, 1894. 



