48 



SPECIMEXS OF XOETH-AMEPJCAN 

 TsOCTUIDJE. 



1, Boinbycia Semicircularis. 



This species has been collected in Washington 

 Territory by Mr. H. K. Morrison. The pale, creamy 

 tegulse and the basal patch, confined to the middle 

 of the primary wing, are distinctive. It differs from 

 B. Improvisa, by its quieter colours, the evenly 

 rounded anterior band, and the more continuous 

 apical streak. It is quite distinct from the species 

 from Japan, described by Mr. Butler, in which the 

 transverse lines are perpendicular. As yet this 

 e-enus in North America seems to be confined to 

 the West Coast, and thus furnishes an example of 

 the greater resemblance of the Western Lepido- 

 pterous fauna with that of the Old World. In the 

 Bulletin of the Buffalo Society of Natural Sciences, 

 i. p. 276, is a paper by Dr. Leon F. Harvey on this 

 group of Moths. 



Bombycia Semicircularis, Grote, ' Papilio,' i. p. 75. 



2. Thyatira Lorata. 

 This beautiful species is about as large as our 

 Eastern T. Fudens. The fore wings are a little 



