THE CANADIAN ENTOMOLOGIST. 149 



only taken this species in one specimen in Venango County, this State, 

 and is not aware whence Mr. Scudder derives his information. 



Thecla acadica.— This species is also referred to this locality by Mr. 

 Scudder, and Messrs. Blake and Edwards are quoted as authorities. We 

 fail to find anyone who has taken it or knows of its capture in this 

 vicinity. 



Chrysophanus thoe. — This species is attributed to this region by Mr. 

 Scudder as " 'rare,' (Blake)." As in the case of J-albiiin, Mr. Blake is 

 sure that he has never seen the species in this locality. 



Chrysophanus epixaiithe. — In this case Mr. Blake is quoted by Mr. 

 Scudder as stating that this species is "neither common or rare." Mr, 

 Blake is not aware that it has ever been taken hereabouts, but he has 

 taken it at DaCosta, N. J., thirty miles from Philadelphia, on the Camden 

 & Atlantic R. R. 



Hesperia unna. — This species, not yet incorporated in any of our 

 catalogues, is described as a new species from " Philadelphia," by Carl 

 Plotz, in his "Die Hesperiinen-Gattung Hesperia Aut. und ihre Arten." 

 — Stettin Entomologische Zeitung,Vol. XLIV., p. 204, 1883. This species 

 is not compared with any of its congeners, and the description is vague 

 and meagre. It is placed between bretUis and phylceiis in Herr Plotz's 

 arrangement of this genus. We are in doubt as to which of our known 

 species it can be, but do not think it possible that it can be new. 



While we feel, certainly with justice, that this list of eighty-seven species 

 is a remarkable one for so restricted a locality, we do not suppose that it 

 is entirely complete. If any of our entomologists can add to it or throw 

 further light on the localities or numbers captured, we shall be glad to 

 receive such information. 



In closing, we desire to bear testimony to the great value of the work 

 on our Eastern Butterflies, now being published by Mr. Scudder, a work 

 that should be in the library of every student of the Lepidoptera. Our 

 few critical allusions to this work above are made necessary, simply 

 because the extreme care taken by Mr. Scudder to avoid error make 

 those that have crept in the more observable, and, consequently, the 

 more deserving of the pointing out. 



Philadelphia, May 16, 1889. 



