OP PHILADELPHIA. 397 



9 The spot of the middle of the wing is extended into a 

 semifascia, and the subterminal band is more distinct ; at the 

 base of the posterior wings is a black, securiform line, one-fourth 

 the length of the [22] wing, behind which is a large, pale ferru- 

 ginous spot, reticulated with whitish nervures. 



Length one inch and seven-tenths. 



At first sight resembles L. hifasciata Fabr., but is quite dif- 

 ferent • the ultimate wing band is not terminal, the anal pro- 

 cesses algo are dissimilar. 



I have not seen any other specimens than the sexes sent me 

 by Dr. Harris for examination. 



In some of its characters it resembles the L. quadrimaculata 

 Linn., of Europe, but that has not the terminal wing bands. 



[Subsequently described as L. semifasciata Burm. Handb. 2, 

 862 : and L. maculata Rambur, Neuropt. 55. — Uhler.] 



8. L. Leda. — Wings at tip, point on the costal margin, and 

 line at base, brown. 



Inhabits the United States. 



L. Lydia, Drury, Ins. Vol. 2, pi. 47, fig. 1, and Oliv. Ency. 

 Meth. p. 570, No. 8. 



Thorax brown, with a pale vitta ; pleura greenish ; wings with 

 a blackish point on the middle of the costal margin, and oblong 

 blackish carpus ; terminal half of the anterior margins and tip 

 fuscous ; a slender black line, at base, equal in length to the 

 breadth of the body ; abdomen with a broad, yellowish-rufous 

 lateral vitta ; anal segment remarkably short ; on each posterior 

 orbit of the eyes are two yellow spots. 



Length about two inches. 



Var. a. Fuscous tint on the anterior margin of the wings ob- 

 solete, being only a very slight tinge of ferruginous. 



Drury's figure represents this species very well, but the fuscous 

 tips of the wings are generally broader, though sometimes alto- 

 gether wanting. [23] 



Olivier has two difierent species of the name of Lydia, both of 

 which he quotes from Drury. We have therefore changed the 

 name of the present species. 



[The name L. Lydia Drury, 2, pi. 47, fig. 1, must be restored 

 to this species, as the other L. Lydia of the same author had been 

 1839.] 



