NO. 1376. LEPIDOPTERA OF THE KOOTENAI DISTRICT— DYAR. 897 



^/r/.— Elliptical, flattenod, doprcssion and truncation woli niai-kcd, 

 rounded, normal; reticudations stellato-wavcd, irregular, of various 

 sizes, moderately raised, distinct, hut the cell areas very shallow. 

 Sui-face finely punctate shag-reened all over. Pale yellow, turning 

 reddish; size, O.S l)^' O.O l)y 0.4 mm. 



Stage I. — Plead rounded, ])ilol)ed, pale brown, shining, with two 

 rows of purplish spots on each lobe, seta' rather long. Fxxly modci-atc, 

 rather slowly looping, pale whitish with longitudinal l)rown bands 

 about as wide as the spaces, dorsal, subdorsal and lateral approximate, 

 subventral and ventral. Feet pale; tubercles small, brown; setre 

 short, dark, glandular tipped. 



MESOLEUCA TRUNCATA Hufnagel. 



Thirty-four specimens, June 14, 23, July IT, 29 (Bear Lake), August 

 6, 7, 9 (South Fork Creek), 18, 21 (lievelstoke), 22 (Revelstoke), 

 8 (Glacier), 9 (Field). Sandon (G. C. llob])ins). The series shows the 

 usual amount of variation, but none of the extreme forms are present. 

 The species much resembles Mesoleiica hersiliata Guenee. One speci- 

 men was bred by Mr. Cockle, but I \\?i\Q not his notes on the larva. 



MESOLEUCA HERSILIATA Guenee. 



Fifteen specimens, mostl}' bred from larva> on currant, June 16, 18, 

 21, 29, July 4, 14, 21 (Bear Lake), 29 (Bear Lake Mountain) and one 

 from Mr. Cockle's collection. The variation is marked. Mo.st of the 

 specimens are dark, though a few are ver}- light, as light as any that 

 1 have from Placer County, California (Koebele), Victoria (Hanliam). 

 I suspect that a light specimen of this formed Hulst's type of etliela 

 and Mr. G. W. Taylor has recently sent me a specimen so marked. 

 If so, that name ma}^ be used for the western race of hersiliata which 

 certainly diifers markedly in appearance from eastern specimens. The 

 light red bands (which induced Walker's synonymic name ff a vn/z/fer a) 

 arc never present, being replaced b}^ rust}^ brown or cream color; the 

 transverse anterior band is narrower, usually more dentate and directed 

 obliquely outward from costa to inner margin instead of inward. All 

 my British Columbian and nearl}' all the Californian specimens show 

 these characters, but the Coloradan ones are intermediate, some show- 

 ing the narrow oblique ])ands, others the erect broader ones, but they 

 agree with the Pacific coast specimens in color. 



Larva. — Head rounded, slightly bilobed, roughly shagreened, pale 

 luteous green, the setic small and white: width, 1.5 nun. Bodv 

 moderately slender, the skin densely clothed with mimite secondary 

 spines and roughened by the slightly elevated, small. \\ iiiic (lU)ercles; 

 green, the dorsal vessel darker, a distinct Avhite sulxlor.sul line from 

 joint 2 to 13 and trace of a lateral one; a similar but broken medio- 



