1873.] , 26 9 [Hagen. 
Scotia. Other localities known are Maine, New Hampshire and Ft. 
Resolution, Hudson’s Bay. This species imitates closely Ep. arctica 
Zett. from Europe, and perhaps LE. semicircularis De Selys, |. ¢., p. 
61, 37 (described from a single male from the Gulf of Georgia, in the 
Cambridge Museum), is only a rave of the same species. 
24. Kpitheca ? obsoleta Say. Hag. Syn., 136, 2. 
No.1. Lib. obsoleta Say Mss., 38 (Say’s determ.), Milton (mead- 
ows), 1820. : 
Say’s type was “a female specimen, sent for examination by Dr. 
Harris.” As the only specimen in the collection is a female, and la- 
belled u, it is doubtless the type seen by Say. I may add that the 
same specimen is the type of Baron De Selys Longchamps, as the 
Society, with the liberal wish to aid the work of this well known nat- 
uralist, allowed this treasure and some similar rare ones to be sent to 
Belgium. All have been returned uninjured, or, rather, in the same 
poor state as they were when sent. 
This is one of the rarest and most interesting North American spe- 
cies. Besides the specimen from Indiana described by Mr. Say, only 
three other specimens are known, all seen and studied by me. The 
female in Harris’ collection; the type of Lib. polysticta Burm. (Didy- 
mops obsoleta Hage. Syn.) now in my collectien, which is a male from 
New Orleans, and thirdly the female from Rock Island, Ill., de- 
scribed by Mr. Walsh as Cordulia molesta. 'The latter was destroyed 
by the Chicago fire, and was studied by me in 1868 at the author’s 
home. I should state that Mr. Walsh was induced by an omission in 
my Synopsis to overlook the identity ef his species with Didymops 
obsoleta Say and Hagen, as I said in the short diagnosis of the genus, 
p- 135, — ‘tarsal nails bifid, the branches equal.” Iwas aware that 
this character applied only to the first species, but I forgot to mention 
its absence in the second species. At that time only having be- 
fore me the specimen of Burmeister, an immature male in very bad 
condition, I did not like to found on such insufficient material a new 
_ genus, and put them therefore in the genus I believed to be the most 
suitable. ‘The species is really an aberrant one, and even Baron De 
Selys Longchamps in his excellent work (Synopsis de Cordulines, p. 
47) having before him both sexes (Harris’ and Burmeister’s types) 
preferred to refer them provisionally to Epitheca, as even in this pair 
the reticulation is not identical. 
25. Cordulia Uhleri De Selys, 1. ¢., p. 40. 
No. 77. 6, Cordulia, Randal, Stow, Mass. 
