OF WASHINGTON. 179 



without by a light brown band. Terminal space darker, containing a 

 white, powdery, scarcely dentate, subterminal line. Margin narrowly 

 black; fringe white with two black lines. Hind wings gray without 

 'basal markings, or a trace of a line across the obscure discal dot; three 

 faint parallel dark lines outwardly, the center one brownish, the others 

 dark gray; fringe as on fore wing, the margin slighly scalloped. Beneath 

 uniformly pale gray with trace of discal dot and common mesial line. 

 Expanse 22 to 25 mm. 



Type. No. 6735, U. S. National Museum. 

 Five specimens, Stockton, Utah (O. C. Poling), July i and 30, 

 1902. 



Dr. Dyar presented for publication the following synoptic 

 table and description of a new species : 



NOTE ON THE NORTH AMERICAN WHITE-MARKED SPE 

 CIES OF EUCOSMA. 



By HARRISON G. DYAR. 



The North American species of the Tortricid genus Eucosma 

 {Pcedisca} which -have conspicuous silvery white spots, may be 

 separated as follows : 

 Markings of fore wing transverse, the spottings as broad as long or 



more so. 

 A median transverse white band. 



Basal spot followed by an upright bar robinsonana Grt. ^ 



Without this bar quinquetnaculana Robs. ' 



No median transverse band adamantana Guen. / 



Markings longitudinal or oblique. 



Without a serpentine band on the disk. 



Median bar unbroken from base to margin crambitana Wals. . 



Median bar not unbroken. 



Median bar reaching middle of wing. 

 Wings marked with broad spots. 



Spots distinct, silvered, sharp edged ridingsana Robs.'^ 



fernaldana Grt. 



Spots diffused, white, ill defined morrisoni Wals. 



Wings marked with narrow silver streaks argenteana Wals. ^ 



Median bar absent; markings oblique ragonoti^NzXs. v 



With a serpentine white bar on disk. 



This bar on center of wing, forming a continuation of basal streak. 

 A white spot on internal margin. 



Serpentine bar separated from base, often joining 



internal margin bolanderana Wals. 



