"256 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. h«. 



wings hyaline. First|tliree tergites ferruginous, the third somewhat 

 piceous ; other tergites black, margined with white apically. 

 Typelocality. — -Urbana, Illinois. 



Type.— Cat. No. 22852, U.S.N.M. 

 Described from the unique Ashmead type. 



In his key to his family Phygadeuontoidae Foereter ^ includes a 

 group of three genera separated from those that foUow them by 

 having the face clothed with glittering silky pile and with notauli 

 extending at least to the middle of the mesoscutum. These are, in 

 the order of their occurrence, TJiysiotorus, Apsilops, and Panargy- 

 rops. The first is separated from the other two by its unbroken 

 nervellus. On an earlier page (175) of the same work and in the 

 family Hemiteloidae he separated off two other genera by identically 

 the same characters. These are Ischnurgops and Steganops. Earlier 

 in the key to the Hemiteloidae the nervellus character is employed. 

 These two characters, the facial pubescence and the form of the 

 nervellus, were therefore used by Foerster in one order in the Phy- 

 gadeuontoidae and in the opposite order in the Hemiteloidae. Among 

 the genera distinguished from Isdmurgops and Steganops, in which 

 the nerveUus is said not to be broken, is Bathythrix (p. 176) said to 

 have a broken nervellus. The only character given by Foerster 

 for separating the Hemiteloidae and Phygadeuontoidae is the incom- 

 plete- areola of tlie former and the complete one of tlie latter. To 

 none of these genera did Foerster assign species, and the only de- 

 scription of either that he offered is the sum of the characters that 

 lead to it in the keys, including the characters employed to separate 

 his families. To certain of these genera species have been assigned 

 by later authors, as follows, only the first inclusion of species being 

 listed: 



Panargyrops (Foerster) Schmiedekneoht. Zool. Jahrb., vol. 3, 

 1888, p. 435. Two species: Cryptus daviger Taschenberg and Lepto- 

 cryptus Tieteropus Thomson. 



TJiysiotorus (Foerster) Brischke. Schr. naturf. Ges. Danzig, 

 new ser. , vol. 7, 1 891 , pt. 4, p. 71 . Two species : Hemiteles (PTiysiotorus) 

 (sic) hrevlpeimis Brischke and Hemiteles (Physiotorus) (sic) similis 

 Brischke. 



Apsilops (Foerster) Ashmead. Trans. Amer. Ent. Soc, vol. 23, 

 1896, p. 207. One species: Cryptus Mrtifrons Ashmead, 



BatTiythnx (Foerster) Howard. Bull. U. S. Dept. Agr., Bur. 

 Ent., tech. ser. No, 5, 1897, p, 53. Two species: Bathythrix meteori 

 Howard and Bathythrix pimplae Howard, 



The first-mentioned species in each case was designated by Viereck' 

 as the genotype. 



I Verb. nat. hist. Ver. Prov. preuss. Rheinland, vol. 25, 1S68, pp. 181-182. 

 » Bull. 83, U. S. Nat. Mus. ,1914. 



