64 SPECIMEN'S OE 



35. Exyra Rolandiana. 



This, the most beautiful species of the genus, has 

 been bred by Mr. Koland Thaxter from the larva 

 feeding on the pitcher-plant, in Massachusetts. The 

 genus is parasitic on the species of Sarracenia. It 

 differs structurally from Xanthoptera, of which the 

 type is X. Nigrofimhria, Guen., by the thicker and 

 longer vestiture. In the type, E. Semicrocea, Guen., 

 the 12-veined primaries have the accessory ceU. 

 greatly elongated, veins 8 and 7 united at base, 9 a 

 very short furcation. Hind wings with vein 5 

 nearly as strong as the rest. Pront not elevated, 

 with a slight inferior tiibercle. The primaries have 

 the apices blunted. Eour species of Exyra are 

 known, viz., Semicrocea^ Midlngsii, Fax, and Ro- 

 landiana. 



Exyra Rolandiana, Grote, 'Psyche,' ii. p. 38. 



36. Fala Ptycophora. 



This singular genus has a number of strong cha- 

 racters. By the conformation of the clypeus it is 

 allied to Stlria and Stihadium. The front is entirely 

 cup-shaped, excavate, raised around the edges like 

 a rim ; from the centre a broad wedge-shaped pro- 

 tuberance arises. Tibiae unarmed ; fore tibiae with 

 a terminal claw. Eyes naked, unlashed. Thorax 

 without tufts. Male antennae simple. Pore wings 

 grey, shaded with ochreous, the stigmata distinct 

 on the wide median iield. Eringes checkered. 

 Aspect of an Agrotis. My type is from California. 



Fala Pttjcophora, Grote, Proc. Ac. Is^. Sci. PhH. p. 426 (1875). 



