145 



In conclusion, I would simply state that in my humble opinion there 

 is more to be learned about these forms than either Dr. Hagen or Mr. 

 Edwards can at present tell us. 



Yours respectfully, 



H. H. LYMAN. 

 Montreal, Sept. 17, 1883. 



SOME SPECIES OF EUCHCETES. 



By Henry Edwards. 



Considerable confusion has hitherto existed among entomologists in 

 the determination of the species of this genus hereafter referred to, 

 many lepidopterists having fallen into the error of believing them to 

 be forms of one and the same thing, and regarding E. collaris as 

 merely an albino state of E. egle. In many cabinets it is still so 

 named, but it has remained for Mr. S. Lowell Elliot, of New York, to 

 clear away all the existing difificulties, and to place the several forms 

 in their proper rank as species. And here I would wish publicly to 

 pay my respect to Mr. Elliot for the vast services he has rendered 

 and will hereafter render to entomology, by the persevering and 

 earnest manner in which he has reared a great number of lepidoptera 

 through all their stages from the tgg upwards, and the unparalleled 

 care he has taken to prevent any mixing together of species, thus 

 avoiding any possibility of mistake. Thousands of examples have 

 passed through his hands during the past two years, the larvce being 

 described in all their moults, and watched with unremitting attention. 

 To Mr. Elliot American lepidopterists will, when the results of his ob- 

 servations are fully known, owe a debt of gratitude it will be difficult 

 to pay. In the genus Datana alone upwards of 10,000 specimens of 

 the various forms have been under his care, and the differences be- 

 tween them carefully and studiously noted. In the present genus 

 enormous numbers of specimens have been raised, and the results here 

 stated are beyond the chances of error. It will be seen that the fall 

 brood of E. eglenensis is white, and superficially resembles E. collaris, 

 while the spring brood is lead color, and closely approaches E. egle. 

 This will help to account for the erroneous impressions I have referred 

 to as to the association of the several species under one. I have 

 thought it wise to include in this paper redescriptions of all the spe- 

 cies, under the new light given to them by the efforts of Mr. Elliot, 

 and have also ^iven names to one variety of E. egle. and to a probable 

 species allied to E. collaris. The first of these was noted by Mr. Grote, 

 and I append his description, applying to the insect the name given to 

 it by him. The other has, I believe, so far been taken only by myself 

 in the Yosemite Valley, California. Its early stages are unfortunately 

 unknown to me, but the present reference to it may, I trust, attract the 

 attention of observers, and finally bring us some information as to its 

 larval condition. 



