1908 ENTOMOLOGICAL SOCIETY. 145 



Our own people should seize every suitable opportunity for tree-planting. 

 They should put in trees for wind-breaks to their homesteads and orchards, 

 shade trees for their roadsides, ornamental trees for their lawns and parks, 

 young fruit trees to supply gaps in their orchards, young maples to keep up 

 their sugar woods, useful trees in every waste spot. 



In conclusion I would impress upon your minds the advice of an old 

 North Countryman : 



" Be aye Btickin' in a tree. 



'Twill be upwards creepin' 

 While ye are a-sleepin'. 



LIFE HISTOIiY OF EUCH^TIAS OREGONENSIS (Stretch). 

 By Henry H. Lyman, M.A., Montreal. 



On 10th July, 1898, I had a day's collecting in High Park on the 

 western outskirts of Toronto. 



Neonympha Canthus was abundant in the moist hollows and Satyrus 

 Nephele was also flying. ThecJa Edwardsii and Lycaena Scudderi were 

 common, the former on Ceanothus A^nericanus a low spreading shrub with 

 white flowers, and the latter coquetting with the blue flowers of the harebell. 

 Thecla Acadica was also flying with Edwardsii and L. Neglecta, P. Troilus, 

 much worn, P. Nycteis, Plusia Simplex, brown form, were also taken while 

 L. Arthemis, P. Oleracea, presumably of second brood, were seen, as well 

 as D. Archippus from the south leisurely ovipositing. 



While collecting the Theclas a white moth came flying around the same 

 plant and was taken. I saw it was a species of Euchgetias new to me and as 

 it was a female I kept it alive to secure eggs if possible. I subsequently 

 learned that it was Oregonensis, but it had lost all the pale drab tone of 

 the primaries and was practically white. 



Eggs, round, gum-drop shape, about as high as the diameter, which 

 is .83 mm., shiny, but showing minute facets under a 2-inch power. Colour, 

 honey-yellow when laid, turning dark lead colour just before hatching. 



Began hatching 18th July, and all but one were out on 19th. Egg 

 period about 8 days. 



Young larva, length including forked tail 2.33 mm., the forked tail 

 being .17 mm. This forked tail seemed marked under the microscope, but 

 when larva was examined with ordinary pocket magnifier on 21st, after 

 it had fed the forking seemed less conspicuous. 



Head, rounded above, brown, darker on upper lobes, the lower part and 

 median suture pale, with a few short hairs. Body after feeding green, 

 yellowish-brown about warts which are dark brown or black. Sette mostly 

 long, black; cervical shield brown. Wart III. on abdominal segments has 

 two setae. The setae on 4th segment are larger than on middle segments and 

 project forward. On 5th segment the upper setse are nearly twice as long 

 as on middle segments. On 11th to 13th segments they are also longer than 

 on the middle ones, those on 12th and 13th being longer than on the IHh. 

 Feet, dark brown, claspers greenish. 



For a wonder the specimen described kept quite still while its descrip- 

 tion was being taken. The larvae on hatching were placed on Asclepias, but 

 did not fancy it. Mr. Winn suggested Dogbane {Apocynum, AndroscBmi- 

 folium) which was then supplied and accepted by the larvae as satisfactory. 



