10} 
108 
12. 
18. 
USy 
20. 
SOUTHERN CALIFORNIA ACADEMY OF SCIENCES 43 
. P. occidentalis Reak. Proc. Ent. Soc. Phila. 1866 
Fairly common at Pasadena. (Grinnell). 
P. protodice Boisd. & LeConte. Lep. Am. Sep. 1833 
This species is quite common in many localities. The 
first brood of the season (P. vernalis of authors) con- 
tinues, in some years, till the typical form appears. 
P. rape Linn. Syst. Nat. 1758 
Too common despoiling cabbage, Nasturtium, Mignon- 
ette and many other garden products. 
Nathalis Boisd. (The Yellows). 
Nathalis iole Boisd. Spee. Gen. 1. 1836 
Rather common in certain years, locally, from 1,000 to 
2,500 ft. Formerly common at the north end of Santa 
Monica, which ranges about 200 ft. above sea level. 
Synchloe Hubner. 
. S. creusa Doubly & Hewit. Gen. Diurn. Lep. 1847. South- 
ern Cal. (Dyar). 
S. ausonides Boisd. Ann. Soc. Ent. Fr. 1852. 
Oceurs in March and April in canyons but not very 
common. 
. 8S. cethusa Feld. Reise Novara. Lep. 1865 
In canyons, but not common. March and April. (Grin- 
nell). 
S. sara Boisd. Ann. Soc. Ent. Fr. 1852 
Common everywhere. Var. reakirtii Edw. appears iater 
with the above species; also sulphur colored females. 
Santa Barbara, Feb. 6 and March 12. 
Callidryas Bois. & LeConte. 
. ©. eubule Linn. Sys. Nat. 1766 
This beautiful butterfly is common in S. Cal. Very com- 
mon in Santa Monica, where the larve defoliate the 
handsome Cassia floribunda of the gardens. It is con- 
tinuously brooded. 
Zerene Hubner. 
Z. eurydice Boisd. Ann. Soe. Ent. Fr. 1855 
Common in the warm canyons in June; Eagle Rock and 
eanyons of San Gabriel Mts. (Grinnell.) Z. amorphe 
var. Hy. Edw. Occasional at Pasadena. (Herr). The 
first brood occurs in Santa Monica canyon as early as 
the 2nd of March, 1905. 
Z. cesonia Stoll, Suppl. Cramer. Pap. Exot. 1790 
Rare. Taken by F. Grinnell in Arroyo Seco Canyon. 
Eurymus Swain. OColias Fab. 
Z. eurytheme Boisd. Ann. Soe. Ent. Fr. 1852 
Common all over S. Cal. nearly all the year; together 
with the seasonal forms of Ariadne Edw. and Keeway- 
