182 THE CANADIAN ENTOMOLOGIST. 



believe I had two species, and a specimen of each has now been named as 

 above by Prof. Smith. I have examined over seventy specimens from 

 eastern Canada and the States, and find the majority of them like my 

 Calgary diffusa series. I have so far only seen one ^ (from Sherborn, 

 Mass.), with secondaries practically as dark as my palest Calgary albilinea^ 

 but this, in common with the majority of them, has slightly paler 

 primaries. It is from Sherborn, Mass., that I have received the darkest 

 eastern $ ^ . But two or three ? $ from New Brighton, Pa., and one 

 from Ottawa, are exact mates for the four Calgary albilifiea. The range 

 of variation in the eastern specimens is considerable, but I have entirely 

 failed in all attempts to separate them into two species, as they seem to 

 grade right through. The smallest specimens seem as a rule to be the 

 palest, but in the "Revision" diffusa is stated to be larger as well as paler 

 than albilinea. Were it not that my two short Calgary series are so 

 sharply contrasting, I should not try to keep the names separate. What Dr. 

 Holland figures as albilifiea is exactly like what I hold as Calgary diffusa. 



336. Z. heterodoxa, Smith. — Described partly from Laggan 

 material (B. C. in error), 5,000 feet, July 2nd, T. E. Bean. The type is 

 from California, and is at Washington. 



336a. Z. megadia. Smith. — Described partly from Calgary material. 

 The type is a Calgary specimen, and is at Rutger's College. 



The above two forms, which I agree with Dr. Dyar in treating as 

 one species, are generally common at Calgary. Megadia has a black 

 basal streak which is lacking in heterodoxa. True heterodoxa is by far the 

 least common form, but every intergrade can be found. This appears to 

 be the western representative of insueta, from which it differs mainly in 

 lacking a reddish tinge, though Prof. Smith in his " Revision " mentions 

 a specimen as red as any insueta he ever saw. None of my specimens 

 have any reddish tinge, but Mr. F. A. Merrick has kindly lent me a 

 Chicago specimen of insueta which lacks it, and in which the basal streak 

 is hardly traceable. Insueta seems to have somewhat paler secondaries. 

 The figure of heterodoxa given with the description shows the basal 

 streak, and is therefore really a better representative of megadia. I sent 

 two of my (? rt to Sir George Hampson, who says they agree with the 

 type of dia, Grote. Dia was described from California. So also was 

 heterodoxa, in part, and megadia is stated to occur there. 



337. Z. multilinear Walk.?— Not rare. End July and early Aug. 

 Though I query the name, I feel fairly confident that it will ultimately 



