THE CANADIAN ENTOMOLOGIST. 315 



BUTTERFLY NOTES. 



BV KARL R. COOLIDGE, HEREFORD, ARIZONA. 



Euchloe lanceolata australis Grinnell. — Egg : Colour, when first laid, 

 light whitish-green, but changing to orange and pale vermilion in several 

 days' time ; just before the larva makes its exit the colour is dirty 

 brownish-yellow, particularly about the micropylar area ; fusiform marked 

 laterally with about sixteen raised vertical ridges, and finer cross veinlets 

 between these ; height about i mm. Einergence takes place in from four 

 to seven days, the duration governed by weather conditions. On April 

 2nd, while collecting in Millard Canon, near Pasadena, I observed a 

 dilapidated $ austraiis ovipositing on a cruciferous plant, not yet deter- 

 mined, and carefully searching a number of these, I succeeded in collect- 

 ing 31 eggs and 13 larvae, the latter apparently all in the first instar. The 

 eggs are variously placed as follows : 



1. Eleven on under surface of leaves. In this case the eggs are 

 seldom laid more than half way down the height of the plant, and are 

 placed usually on the basal outer edge of the leaf, although in two cases I 

 found them situated on the extreme edge. 



2. On stem. Seven laid erect, at right angles with the stem. 



3. Five on sepals of young inner buds. 



4. Eight on various parts of the pedicel, but especially on the rachis. 



I observed the 9 oviposit three eggs on a single plant, but in differ- 

 ent situations. 



Young larva : Not distinguishable from the new-born caterpillar of 

 E. sara or ausonides, Colour light orange-yellow, this becoming rapidly 

 lighter ; head small, almost black ; dark coloured hairs scattered sparsely 

 over the body. Length in motion, i.i mm. 



Euchloe australis I would consider a good subspecies of lanceolata, 

 differing at once therefrom in having the apical shading far intenser, and 

 in the different coloration of the secondaries beneath. The size and shape 

 of the apical bar, which Mr. Grinnell (Can. Ent., p. 73, 1908) states in 

 lanceolata is crescent-shaped, and in australis straight, has no taxonomic 

 value, as in all our Euchloids this character is exceedingly erratic. The 

 type locality of australis is Anoyo Seco Canon and Millard Canon, Pacific 

 slope of the San Gabriel Mountains, Los x\ngeles County, California, and 

 it ranges southward to Mexico. 



E. lanceolata lanceolata flies as far north as Alaska. Its distribution 

 through Oregon and Washington has not been apparently traced. Mr. 



September, 1910 



