N0.1376. LEPIDOPTERA OF THE KOOTENAI DISTRICT— J} YAK. 887 

 PSEUDOTHYATIRA EXPULTRIX Grote. 



Six spooiinons; June !♦), July 2, 14, 19, 25. They agree with .speci- 

 mens from the Atlantic States and Pacific coast. Eg-jrs were obtained 

 from a captive female, laid in long strings on the tips of the leaves. 1 

 provisionally regard this form as a distinct species from ci/mafophor- 

 oUles Guenee. There arc no intergrades in the moths. The larvie 

 of ex}ndtrlx showed no white lateral spots, while those of cyiiidfojilior- 

 oides did in most cases. In a group where the larva? are so much 

 alike as they are here, this diti'erence ma}^ be of some value. Some 

 ditferences were observed between the eggs, but they may l)e of an 

 individual character rather than specific. Both sets of larvie had five 

 stages and were indistinguishable except as noted above. I need not, 

 therefore, transcribe my notes. 



EUTHYATIRA PUDENS Guenee. 



No specimens; Mr. Cockle has one so named. The food i)lant, 

 Corvuf<^ occurs at Kaslo, but none of the characteristic larva> were 

 seen on it. 



Family LIPARID.E. 



NOTOLOPHUS ANTIQUA Linnaeus. 



No specimens; Mr. Cockle has the species, but whether of the coast 

 form hadla Hy. Edwards or not, 1 can not say, not having seen the 

 larva. 



OLENE PLAGIATA Walker. 



No specimens; one from Mr. Cockle's collection, Julv 1<S, 1902. 

 Family LASIOCAMPID.F. 



MALACOSOMA PLUVIALIS Dyai. 



Fifty-eight specimens, July 13, 14, 15, 10, 17, IS, 25, 30, August 3 

 (Sandon, Mr. Currie). The moths and larva^ agree with specimens 

 from the Pacific coast. The larvie are a little less orange colored, 

 some specimens having the orange marks consideral)ly reduced, the 

 blue marks distinct, suggesting //y/y///,v Stretch of Coloi'ado. but they 

 do not diverge sufficiently from pluvlalis for even racial distinction. 

 The species has recently been called synonymous with atlifomica 

 Packard; but there is, of course, no warrant for that. Califorulrn is 

 a very near relative oi j[)luvUdl>< and single specimens of the adult are 

 not distinguishable, but the larva difi'ers in the great reduction of all 

 its markings, both blue and orange, so that it looks black. FurthcM-- 

 more it is an oak feeder, while jdin'/(d/.^ is addicted to other plants. 

 This precludes considering the forms otherwise than as distinct species. 



