46 THE CANADIAN ENTOMOLOGIST. 



Edwards (Butt. Vol. 1), writes : " As to sara. I first met with it two years 

 ago in Santa Clara County, and was at once struck by its larger size, the 

 yellow colour of most of the females, and the absence of the irrorated line 

 along the anterior margin, as well as by the much fainter green markings 

 on the under side of lower wings. Unlike Reakirtii, the species seems to 

 prefer the open fields, flies much more slowly, and alights often upon 

 flowers of Brassica, Nasturtium, etc. I am so accustomed to the two 

 forms, that 1 can now distinguish them by the flight alone." 



Preparatory Stages. — Scarcely anything is known of these. Edward* 5 

 refers to the relationship of sara and Reakirtii, as shown by records of 

 the pupae. Again, in his supplement to the Butterflies of the United 

 States (v., 3, p. 2, 1S97), ' ie refers to this. G. R. Minot, in a note in 

 Entom. News (p. 158, 1902), briefly describes the egg, and records the 

 oviposition on the " common mustard." 



Food-plants. — Lembert' reports the oviposition of sara and Reakirtii 

 in the Yosemite National Park on the stalk of Thysanocarpus pusillus. 

 In this locality sara has the same food-plants as ausonides, viz., Brassica 

 campestriSy L., and nig/ a, 1,. But there must be others also, as sara is 

 found abundantly in the higher hills, where Brassica is very rarely met 

 with. 



Oviposition. — For the past several years we have observed numerous 

 instances of oviposition. As a rule the eggs are tucked between the young 

 sepals, but there is a great irregularity in this. Sometimes the eggs are 

 placed on the peduncles, and quite often on the under side of the leaves, 

 upon which the larviu readily feed. On June 27, '07, a $ was observed 

 ovipositing. Eight eggs were seen to be laid, one on a leaf, two on 

 peduncles, and the others on the buds. She was then captured, and by 

 the next afternoon she had deposited forty-five more eggs in the pill box in 

 which she was confined. 



Egg. — Length almost 1 mm.; fusiform, laterally marked with raised 

 vertical ridges not quite so prominent as in ausonides, between which are 

 finer cross-veinlets ; base flattened. Colour light lemon-yellow when first 

 laid, changing to orange in from twenty to thirty hours, and this colour is 

 quite uniform until just before hatching, when the colour is duller. 



First ///star. — Length, 1.5 at rest ; in motion nearly 2 mm. Colour 

 dirty yellow, sparsely covered with black hairs. Head rather large, black. 

 The duration of the egg stage to the emergence of the young larvae varies 



3. Can. Ent., XXIV, p. 52, 1892. 



4. Entom. News, 6, 137, 1S95. 



