12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



OnW the type material is known ; a study of this shows conckisively, 

 I think, that graylioUthae and aspidiscae are the same species. 



5. MIRAX ECTOEDEMIAE (Rohwer). 



Centistidea ectoedemiae Rohwer, Psyche, vol. 21, 1914, p. SI. 



Type. — In the United States National Museum. 



At once distinguished from minuta by the characters giN en in the 

 table to species. Mr. Gahan had previously detected the synonymy 

 of Centistidea with Mirax^ and called my attention to this point. 

 There can be no doubt whatever that Centistidea Rohwer is Mirax 

 Haliday. 



Ballston, Virginia. 



Host. — Ectoedemia castaneae Busck. 



Known only from the type specimens, 



6. MIRAX MINUTA Ashmead. 



Mirax minuta Ashmead, Psyche, vol. 6, 1893, p. 378. 

 Type.— In the United States National Museum. 

 Apparently the smallest of our described species. 

 Jacksonville, Florida. 

 The unique type is the only specimen known to me. 



Genus ADELIUS Haliday. 



Adeliiis Haliday, Entom. Mag., vol. 1, 1S33, p. 262. acnotyi>e.—AdeUus 



subfasciatus Haliday (Monobasic). 

 Acaelius Haliday, Eutom. Mag., vol. 2, 1834, p. 231. (Emendatiou.) 

 Pleiomcrus (Wesmael) Ratzeburg, Ichn v. Forstins., vol. 3, 1852, p. G5. 

 Genotype.— Adeliiis subfascinatus Haliday (Monobasic). Isogetiotypic 

 with Adeliiis Haliday. 

 AcoeUus Haliday Foerster, Yerh. naturli. Ver. preuss. Rheinl., vol. 19, 1962, 

 p. 244.— Marshall, Trans. Eut. Soc. Loudon, 1885, p. 153. (Emendation.) 

 Anomopterns Rohwer, Psyche, vol. 21. 1914, p. 80. Genotype.— Anontoptenis 

 fasciipennis Rohwer (Monobasic). 

 Haliday, in 1834, specifically said that the name Adelim, published 

 the preceding year, was due to an oversight, and published tlie correc- 

 tion, Acaelius. This name contained a typographical error, not re- 

 peated in the index of the volume, which was subsequently corrected 

 by Foerster. However, it seems inadvisable to accept such emenda- 

 tions of generic names, though long in use ; and in the present paper 

 Adelius is held to be the valid name for the genus. That AiW7nop- 

 terus Rohwer is Adelius Haliday was brought to my attention by 

 Mr. A. B. Gahan, who had earlier noted the identity of this genus. 



Head ahnost subquadrate, the vertex quite long and flat; eyes 

 siiortly pilose; antennae 20-segmented ; occiput margined; parapsidal 

 grooves wanting; stigma elongate-oval, not angulated; radius aris- 

 ing far out on stigma, greatly abbreviated; first intercubitus attain- 



