Scudder.] 272 [March 23, 



acaroides F., Spec. Ins., i, 552, n. 8; Mant., Ins. i, 34S, n. 8; 



Syst. Ent., n, 437, n. 11. = Ckelifer americanus De Geer. 

 araneus L., Iter Oeland, 84. = (?) 



eaneroides L., F., Syst. Ent., 400, n. 7; Spec. Ins., i, 551, n. 7; 

 Mant., Ins. I, 348, n. 8; Ent. Syst., n, 436, n. 10. Panzer, Fn. 

 Germ., fasc. 50, f. 14. = Chelifer eaneroides L. 



cimicoides F., Ent. Syst., n, 436. 



= Cherries cimicoides F. (teste 

 Menge.) 

 Scorpionidea Leach, 1817. (Familia.) 

 Leach, Zool. Miscell., in, 48. 



Scorpionides Latreille, 1806. (Familia.) 

 Leach, Trans. Linn. Soc. Lond., xi, 390. Latr., Gen. Crust., i, 132. 



Dr. Hagen stated that Dr. A. S. Packard, Jr., had recently 

 discovered in Brunswick, Me., and in Salem, a species of 

 Amphientomum, a genus of Xeuroptera, whose body is cov- 

 ered with scales, and heretofore known only from Ceylon. 



The following paper was read : — 



On the Synonymy of Thecla calanus. By Samuel H. 

 Scudder. 



In Eastern North America there are two species of Thecla, closely 

 allied, occupying, so far as we know, the same geographical area 

 (from Canada to Virginia or Georgia, and from Massachusetts to 

 Iowa), and, until recently, almost invariably confounded by American 

 entomologists. Messrs. Grote and Robinson first called public atten- 

 tion to the fact of their specific distinctness, although Mr. W. Saun- 

 ders, both in his correspondence and mss., had previously urged the 

 same point. As my material was insufficient, and because certain sj)ec- 

 imens, to which I had constant access, seemed to combine many of 

 the features which generally separated the specimens into two groups, 

 I have hitherto been unwilling to accept the determination of these 

 entomologists. But recently, through the kindness of many friends, 

 I have had the opportunity of examining more than one hundred 

 specimens of each species, and have become entirely convinced of 

 their specific value. 



