NO. 2334. NORTH AMERICAN ICHNEUMON-FLIES— CUSHMAN. 257 



In 1873 Thomson^ first proposed his genus Leptocryptus in a key 

 to the genera of Phygadeuonini. In a note following the key he says : 



"Of Leptocryptus, which in some ways is related to the Ophioninae, I know of no 

 described species unless Taschenberg's Panargyrops claviger should possibly be referred 

 here" (translation from the Swedish by Dr. Adam Boving). 



The genus was not further characterized until 1884, when Thomson ^ 

 published a formal description and tabulated and described nine 

 species— cZavi^er Taschenberg, strigosus Thomson, lamina Thomson, 

 aereus Gravenhorst, hreds Thomson, pellucidator Gravenhorst, geni- 

 culosus Thomson, rugulosus Thomson, and ruficandatus Bridgman. 



In 1905 and 1908 Schmiedeknecht^ placed Apsilops, Thysiotorus, 

 and Panargyrops in synonymy with Leptocryptus with the statement: 



The three Foeraterian genera constitute the genus Leptocryptus, so neither name 

 can be used for the united genus; they can not even be used to designate subgenera, 

 since they are not sharply separable. 



Roman* unites all of the genera thus far mentioned, except Bathy- 

 thrix, together with Ocymorus Foerster under Leptocryptus, desig- 

 nating Panargyrops as a subgenus. The only species mentioned is 

 claviger Taschenberg, which is definitely placed under the heading 

 "Untergatt. Panargyrops Forst." On the strength of this Viereck' 

 designated claviger as the type of Ischnurgops and Steganops. This is 

 obviously not in accord with the intention of Roman. The fact that 

 Leptocryptus and Panargyrops are isogenotypic does not alter the 

 case, for Roman says that the genus is divisible into two subgenera, 

 one of which is Panargyrops and the other composed of the other 

 Foersterian genera. 



It seems to the writer that Ischnurgops and Steganops, together 

 with Ocynorus which Viereck overlooked in his wholesale attempt at 

 suppression of generic names, must be considered as still without 

 properly included species. Furthermore, claviger differs from the de- 

 scriptions of Ischnurgops and Steganops in having the areolet closed, 

 and from the former further in not having the face strongly narrowed 

 below. In the Phygadeuontoidae it can run only to Panargyrops, 

 and this is the only Foersterian genus for which it can function as 

 type. Although its first inclusion in Leptocryptus was somewhat 

 doubtful, no such doubt was expressed by Thomson in his second 

 mention of it; and Viereck 's fixation of it as the type of that genus 

 can not be questioned. Leptocryptus is therefore a strict synonym 

 of Panargyrops. 



1 Opusc. Ent., fasc. 5, 1873, p. 521. 



» Idem., fasc. 10, 1884, pp. 963-966. 



3 Idem., fasc. 10, 1905, p. 727; Gen. Ins., fasc. 75, 1908, p. 9 



* Naturw. Unters. Sarekg., vol. 4, 1909, p. 236. 



5 Bull. 83, U. S. Nat. Mus., 1914. 



18140i— 21— Proc.N.M.vol.58 17 



