238 THE CANADIAN ENTOMOLOGIST. 



yellow, with a thin ventral line ; another such line, subventral, on the 

 last three or four segments ; the ventral li7ie forks as it Jiears the thorax, 

 leaving a yellow space between the forks. 



The female has the base of fore wing as thickly dusted, perhaps 

 more so; the submarginal band more dusted. Beneath, like the male; 

 the cell nearly solid yellow, there being two black bars, one about 

 middle, the other half way between this and the arc. The ventral side of 

 abdomen is either marked by two fine black lines, or these are wholly 

 wanting ; on the side a narrow stripe. 



1. A male, so-called Oregonia, bred from eggs laid by a female 

 Bairdii, is very black above, a thin dusting of yellow scales at base of 

 fore wing scarcely detracting from the general blackness ; and the sub- 

 marginal band is free from yellow scales. On the under side the cell 



from arc to base is black, except for a narrow transverse bar just inside 

 the arc, and another at two fifths the distance from arc to base. The 

 nervures on both wings heavily edged tu it h black; the blue not azure, but 

 dark {as in Bairdii). The lines of black on abdomen are stripes rather, 

 and next the thorax are diffused, making a broad black area. 



2. A male, so-called Oregofiia, bred from egg laid by a female 

 of same type. This is blacker than No. i, the yellow dusting more 

 scanty. On under side the cell solid black, excepting the two yellow cross- 

 bars at and near the arc ; the nerves and branches heavily edged with 

 black ; the blue dark; the black stripes of abdomen confluent next thorax. 



In a female corresponding to No. 2, the ventral side of the abdomen 

 is nearly solid black ; in one corresponding to No. 1 , the four stripes are 

 heavy, but not quite confluent. 



The above description answers for all the examples of so-called 

 Oregonia which I have bred from either same type of female or from 

 Bairdii. But I have a female nearer the true type Oregonia that Mr. 

 Bruce bred from egg laid by Bairdii, 1892, and which came out of pupa 

 in March, 1893 ; spoken of in Can. Ent., XXV., 254. This has the base 

 of fore wing and the submarginal band much dusted yellow ; the base of 

 cell beneath, gray-yellow, ending near middle of the cell in rays, and 

 altogether as in typical Oregonia; the nerves and branches lightly edged 

 black ; the submarginal band on fore wings densely dusted, making it a 

 yellow band rather ; and the blue is azure. This is the nearest example 

 to true Oregonia of all the bred hybrids which I have seen. 



