62 THE CANADIAN ENTOMOLOGIST. 



This variety is a unicolorous gray and the bands and red 

 shadings are lacking. It is Hke the unicolorous variety of 

 autumnalis. 



Hydriomena riiberata Var. (c) glaucata Packard (Proc. 

 Bost. Soc. Nat. Hist., XVI, 20, 1874; Catal. of the Phal. of Cali- 

 fornia, No. 2, Boston, Dec, 1873, PI. I, fig. 6; Monograph p. 96, 

 1876). 



The type is not in the Museum of Comp. Zool. at Cam- 

 bridge, Mass., and I suppose therefore that it was returned to 

 Edwards, its sender, as was Packard's custom, and should be in 

 the American Museum of Natural History, New York. There is 

 a specimen in the Edwards collection in the American Museum, 

 New York, that answers closely to the description and figure, but 

 unfortunately the head is missing, the most important part. The 

 piece torn from the wing is as in the figure and the lines correspond, 

 but it is impossible to tell where it belongs without the head. 

 The plate is fairly clear and the figure shows the long beak-like 

 palpi, and Packard speaks of them particularly in the description, 

 so we know from the description at least where the type belonged. 

 Since rnberata is the only closely allied species that has reddish 

 shaded bands, with gray and unicolorous variations, and since 

 we know green varieties always occur with red, it seems reasonable 

 to suppose that this is a green variety of rubsrata or else a closely 

 allied species. This seems hardly possible, as I have specimens 

 which agree line for line with glaucata, only they lack the red 

 shading. I received a specimen from Mr. Broadwell which was 

 green, and agreed with glaucata in every respect. 



This form has broad full-rounded wings with five watery 

 bands crossing them, and has a pale green ground colour with pale 

 ashen hind Vv^ngs. 



Type. — 1 9 (Edwards), Calif., probal)ly in American Museum 

 of Natural History, New York. 



This includes all the species and \arieties so far listed, and, 

 I hope, will help to separate the many tangles. The genus Hydrio- 

 mena, as a whole, seem.s a very compact and natural group, if 

 we exclude the heterogeneous forms. The palpi and 'colour 

 scheme seem to be very constant characters, and I believe eventu- 

 ally the other forms will be transferred to other genera. Surely 



