248 mOCEEDINGS OF THE NATIONAL MUSEUM. 



Prof. T. D. A. Cockerell at Mesilla Park, New Mexico, June 24, 189G. 

 Type.— 1^0. 3851, II.S.N.M. 



Genus ECTROMA WestAArood. 



Ectroma Westwood, Philosophical Magazine, 1833, 3d sor., Ill, p. 344, No. 30. 



ECTROMA AMERICANUM, new species. 



Female.— Ijength, 1.6 mm. Ocelli at angles of riglit-angled triaugle; 

 head smooth, shining, very faintly shagreened; mesoscutum shining, 

 with close silvery pubescence; mesoscutellum with golden pubescence; 

 first abdominal segment and sides of metanotum with silvery luibes- 

 cence; general color, dull yellowish brown; mesoscutellum somewhat 

 brighter colored; scape of antennae honey-yellow; pedicel and funicle 

 black; club pure white; dorsum of abdomen dark brown and sides of 

 mesonotum also dark; all legs uniform honey-yellow; rudiments of 

 wings prominent, those of forewings as long as middle tarsi. 



One female, collected by Prof. T. D. A. Cockerell at Mesilla, New 

 Mexico, June 24, 1896. 



Type.— No. 3852, U.S.N.M. 



This is the first representative of this remarkable group to be found 

 in America. Other species are known from Europe, Java, and Madeira. 



Genus PHAENODISCUS Foerster. 



Phaenodiscus Foerster, Hymenopterologische Stiidien, 185G, II, p. 144, No. 6. 



PHAENODISCUS ARIZONENSIS, new species. 



Female. — Length, 1.5 mm.; exjianse, 3.3 mm. Comes closest to P. 

 aeneus Dalman. Frons with large sparse punctures; face with still 

 larger punctures; mesonotum transversely shagreened and with large 

 regular piliferous punctures; wings deeply infuscated, except at tip; 

 costa above submarginal vein much arched; stigmal, postmarginal and 

 marginal veins subequal in length; general color dusky reddish brown, 

 lighter on face and mesopleura, and much darker on abdomen and 

 mesoscutum, the latter being somewhat metallic ; all coxae nearly black, 

 legs yellow-brown; scape of antennae, pedicel, and first three funicle 

 joints light brown; funicle joints 4, 5, and yellowish white. 



Three females, Mr. H. G. Hubbard, Chiracahua Mountains, Arizona, 

 May 31, 1897. 



Type.— No. 3853, U.S.N.M. 



