276 LEPIDOPTEEA. 



in the genus Polyommatm, and they usually live on trees. 

 One of our largest kinds is the Falacer butterfly (^Thecla 

 Falacer of Godart). Its wings expand from l^js inch to l^j 

 inch, are dark brown on the upper side, with two slender 

 tails, one of which is very short, on each of the hind 

 wings ; and on the hind margin of the same wings is an 

 orange-colored spot, larger and more conspicuous in the 

 females than in the other sex ; the under side of the wings 

 is lighter brown; and on each wing near the middle is a 

 dark-brown spot margined within and without with white, 

 and beyond the middle there are two rows of spots of the 

 same color, bordered on one side only with white ; besides 

 these spots, there are on the hind wings near the margin three 

 or four orange-colored crescents, the inner one of which is 

 separated from the others by a large blue spot. This insect 

 is found among bushes in July and August. The caterpil- 

 lar is said to live upon various kinds of hawthorns. 



The streaked Thecla ( TTiecla strigosa) has a long and a 

 short tail on each of the hind wings, and is of a dark-brown 

 color without spots on the upper side ; the wings beneath are 

 ornamented with wavy transverse white streaks, and near 

 the hind margin of the posterior wings is a row of deep 

 orange-colored crescents, with a large blue spot near the 

 hindmost angle. It measures one inch and one tenth across 

 the wings. I took it on Blue Hill on the 1st of August. In 

 the markings of the under side of the wings it nearly resem- 

 bles Thecla Liparops. 



The heads of the common hop are frequently eaten by the 

 little green and downy caterpillars of a very pretty butterfly, 

 which has been mistaken for the Thecla Favonius, figured 

 in Mr. Abbot's " Natural History of the Insects of Georgia" ; 

 but it differs from it in so many respects, that I do not 

 hesitate to give it another name, and will therefore call it 

 the hop-vine Thecla, Thecla Humuli''* (Plate IV. Fig. 3). 



[t T. Humuli is the T. melinus of Hiibner. — Mokkis.] 



* M. Boisduval has figured and described this species under the name of Thecla 

 Fnvomuf, in his "Histoire des L^pidoptferes de l'Am(?rique Septentrionale." 



