138 THE CANADIAN ENTOMOLOGIST. 



Twenty-eight specimens, twenty-six collected and bred by Dr. Dyar, 

 Kaslo, B. C. LarvBe June 17, on willow, issued and flown specimens July 

 25 ; and two specimens taken by Dr. Barnes, Aug. 9, Banff, Alberta. U. 

 S. Nat. Mus. Type No. 7787. 



Named in honour of Mr. J. W. Cockle, the enterprising and inde- 

 fatigable collector who is making Kaslo famous. 



Acleris Brita?i?tia, sp. nov. — Head light brownish fuscous, tips of 

 scales shaded with deeper brown. Palpi fuscous, beneath and inside, 

 brown outside. Antennae fuscous beneath, reddish brown above. Thorax 

 ochreous brown, with scales arranged in a tuft. Fore wing ochreish-brown. 

 Costa at base dark brown. A faint brown outwardly-curved oblique line 

 begins at costa at about one-fifth, touching dorsal margin at one-quarter. 

 Parallel to this line is a second brown line, beginning on costa at two-fifths 

 and touching dorsum just beyond middle. The space between these two 

 lines is paler than the balance of wing, forming a well-defined oblique 

 fascia. The usual triangular costal patch begins at this second line, and 

 is unusually large and dark. It extends along costa to but not touching 

 apex, more than half length of costa, and the lower point nearly to centre 

 line of wing ; colour of patch rich dark coppery brown, roughly arranged 

 in parallel oblique rows, between the rows brownish fuscous ; heavily 

 overlaying the patch are clusters of dark gray scales. These are particu- 

 larly grouped at the lower point, just beyond inner point, and before outer 

 point, and a row of dots below but not on costa. The costa along the 

 patch is paler. Tips of scales,, on outer margin, overlapping, cilia are 

 darker brown, forming a fine marginal line. 



There are a number of dots of black raised scales ; the largest and 

 highest is just above dorsum, on the inner of the above parallel lines, on 

 the outer of these lines five or six small clusters, the cluster in centre the 

 largest, the lowest one is on the dorsal margin, another small dot is just 

 beyond this and just above the dorsal margin. Seven small clusters 

 form an acutely outwardly curved line, its upper end beginning in the dark 

 costal patch about half way between the lower and outer points of the 

 patch, and curving outward towards outer mftrgin, thence evenly and 

 regularly curving to the anal angle. Another dot is below outer end of 

 costal patch and before apex. The ground colour of the fore wing is more 

 of a tawny yellow than ochreous brown ; under a low-power lens the 

 ground colour is seen to be a series of wavy lines, alternately tawny yellow 

 and a lighter cinereous yellow. These lines are generally parallel and 



