154 Journal New York Entomological Society. [Vol. xvi. 



which has been called "the child of the desert." Our record, how- 

 ever, shows that its habitat is not confined to strictly desert regions. 

 The sequence of the following list is in accordance with that of 

 Bull. 52, U. S. N. M. The numbers in parentheses refer to the 

 numbers of that list. W. G. Wright's " West Coast Butterflies " has 

 been our principal guide in identification. Some doubtful species have 

 been referred to Dr. Skinner and others. 



1. Papilio eurymedon Boisduval (9). 



This beautiful swallow-tail may often be seen in the early morning 

 floating leisurely along over the flowers and shrubs in the canons. It 

 is not very common in any one place but is found all the way from 

 the coast to the mountains. 



2. Papilio rutulus Boisduval (10). 



In the summer of 1906 this butterfly was particularly plentiful. I 

 took a few specimens in the vicinity of San Diego early in the spring 

 and later, in July, I captured them in large numbers at Barret's Dam, 

 back in the mountains. It is common wherever the willow grows. 

 Mission Valley, in the immediate vicinity of San Diego, is a good col- 

 lecting ground for this butterfly during its season. 



3. Papilio zolicaon Boisduval (18). 



From early spring to late summer this beauty sports about on the 

 hillsides in its favorite haunts. In September its larva? may be found 

 feeding on a species of wild carrot that grows plentifully in waste places. 

 It is said to be very abundant in April on the Coronado Islands about 

 twelve miles off the coast, though I have never collected it there. 



4. Laertias philenor Linnaeus (23). 



Very rare. One specimen was taken by one of my school boys 

 in the City Park near Date Street during 1906. So far as I know this 

 is the only record of one taken in San Diego. I am told that the 

 larva? were imported some years ago from San Francisco by Mrs. 

 Katherine Brandegee. Its food plant — Aristolochia calif or nica — is 

 not known here except in cultivation. 



5. Pontia protodice Boisduval & LeConte (37). 



I have seen this little " white " in great numbers in this city dur- 

 ing the early summer and have taken it sparingly in the back country 

 in July. 



6. Pontia rapa? Linnseus (40). 



This pest is common here as it is everywhere in the United States. 



