BUTTERFLIES OP THE DISTRICT OF COLUMBIA 75 



Although usually to be seen about the higher branches of the 

 trees, and especially perched on the upper surface of the outermost 

 leaves, these butterflies are occasionally noticed on the leaves of low 

 herbaceous plants growing in the clearings, and even on the ground. 

 They delight in resting, head down, on the trunks of trees, like the 

 angle wings, and if disturbed will frequently alight upon one's 

 clothing, or on the rim of the net. I once watched an entomologist 

 searching for this species with a fine example perched upon his cap. 



The hackberry butterfly is fond of sucking up water from muddy 

 spots in roads, is very fond of the juices of decaying fruit, and is 

 inordinately fond of decaying flesh or filth. Any animal carcass has 

 an irresistible attraction for it, and it is most readily captured by 

 baiting with a dead snake or other creature placed in a clearing in 

 the woods. 



Seasons. — The hackberry butterfly is two brooded, the first brood, 

 which consists of few individuals, appearing in the first half of June, 

 and the second, which is far more numerous, appearing after the 

 middle of August and becoming most abundant early in September. 



1 have specimens taken on June 16 and on September 2, 6, 8, 11, 

 and 29, and Mr. Shoemaker has specimens taken on August 20 and 

 on September 2 and 3. 



CHLORIPPE CLYTON CLYTON (Boisduval and Le Conte) 



Tawny Hackberry Butte2ifly 



Plate 4, Figures 1 to 3 



Occurrence. — Very local and apparently uncommon. I have three 

 specimens, a dark male (pi. 4, fig. 3) and a dark female (j)!. 4, fig. 2) 

 taken in an open grassy area in a patch of woodland along the canal 



2 miles west of Cabin John, where they were flying in company with 

 numbers of the preceding species, and a light female (pi. 4, fig. 1) 

 caught on a willow in a field about half a mile away. 



Habits. — This species is less active and less wary than the preced- 

 ing and correspondingly more easy to catch. 



Seasons. — My specimens were taken on September 8 and 11, 1926. 

 It is presumably two brooded in this region, occurring with the 

 preceding species in June and again in the latter part of August and 

 in September. 



Note. — Since the preceding account was w^ritten, two additional 

 males have been taken. A freshly emerged dark individual was 

 picked off the trunk of one of the pin oaks in the 1800 block of 

 Wyoming Avenue, Washington, on August 16, 1931 (Hugh U. 

 Clark), and when in company with Foster H. Benjamin on Sep- 

 tember 14, 1931, I took a very worn light specimen at Cabin John 

 very near the locality where the light female was caught. 



