276 LEPIDOPTEKA. 



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

 One of our largest kinds is the Falacer butterfly (Thecla 

 Falacer of Godart). Its wings expand from 1 T V inch to lxb- 

 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 ( Thecla 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 Xdparops. 



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 JPavonius, 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 1 * (Plate IV. Fig. 3). 



[ ' T. Eumuli is the T. melinus of Hubner. — Morris.] 



* M. Boisduval lia9 figured and described this species under the name of Thecla 

 Favonius in his "Histoire des Lepidoptfcres de l'Amenque Septentrionale." 



