81 



the vittiv indistinct; wings hyaline, calypteres white; length, 



3 mm. Las Crnces, X. Mex, Two male specimens collected /^'^T'-*-^ 



September 17, by Mr. T. D. A. Cockerell. Type No. 3580, U. S. ^C- 



National Museum u;,c,u.^t;«.u:^ "f""* n. sp. 



3. Second segment of abdomen /J^eamig- a distinct marginal pair of 

 macrocha'tas abdomen gray pollinose, usually marked with two 

 or three rows of blackish spots; length, 3 to mm, Toronto, 

 Canada; Wliite .Alountains, New Hampsliire; Springfield, Mass.; < 



New York City, N. Y.; Maryland; Virginia; North CaroUna; 

 Tifton, Ga.; Texas; Colorado; Washington, and southern Cali- ^/ujUj»^ 

 fornia. (Biol. Cent.-Amer., Diptera, Vol. II, p.si); March, 1890: ^ U/Cr^ 

 Milto(jn(mina. Arrenopm amerieana Brauer and Bergenstamm, '^^^J-ir-"^/-**- - 

 Zweif. Kais. Mus. Wien, V, p. 301; 1891. Miltoyramma «'Y/ew- jjVi^^^^&lv^ 

 tifroiiH Towrsend, Trans. Amer. Ent. Soc, Vol. XVIII, ]>. 357; ^j^hT^ 

 November, 1891. MUtogramnia cinerancois Townsend, loc. cit., 

 p. 358. Arrenoptis s^.j and Spliixapata sp., Brauer and Bergen- 



stamm hi litt.) 7 trilineafa v. d. W. 



Second segment destitute of a marginal pair of macrocha'ttc, abdo- 

 men sliining, bases of last three segments white pollinose; black, 

 the frontal vitta, lirsfc two joints of antenme and the palpi, yel- 

 low; sides of front and face white pollinose, thorax whitish 

 pollinose, the vitta not distinct, wings hyaline, calypteres white; 

 length, 3 nun. Las Cruees, N. Mox. A single male specimen 

 collected September 17 by Mr. T. \). A. Cockerell. Type No. 

 3581, U. S. National Museum fasciata n. sp. 4^ 



Genus PSEUDOTRACTOCERA Town.^ 



Pseiidotraclocira Townsend, Trans. Amer. Ent. Soc, Vol. XIX, y. 107; May, 1892. 



Our species has three postsutural and three st<u'nopleural macro- 

 cha4a', is black, the lirst two joints of the anteunriTand the palpi yellow; 

 apex of antenna' distant Jrojii-ttie oral margin the length of the third 

 anteniial joint|_liingth7minm. From a co-type specimen. Las Cruees, 

 N. Mexr-'X^jOC. cit., p. 108.) neomexicana Town. 



Si, 



Genus BIOMYIA Rond. 



FabrhUi Mei.ueu, System. Hesch. Eur. Zweif. lusekteu, Vol. VII, p. 250; 1838. 



{Xon lilainville; 1828. Xon Desvoidy; 1830.) 

 liiomjia Kondani, Diptc iolo;;i;i' Italicir Prodromna, Vol. I, p. 72; 1856, 

 I'iridiiia Kondani, loc. cit., \'ol. IV, p. 53; 18(51. 

 Masiphim Braner and Hergenstamm, Zweif. Kais. Mus. Wien, V, p. 313; 1801. 



Viviania was proposed for tlie genus Fabricia of Meigen, the name 

 Fabricia iiaving l)een previously used by at least two ditt'erent authors. 

 On the same page llondani acknowledges that his genus Biomyia is 

 synonynu)us with Viviania, Specimens identified by Brauer and Ber- 

 genstamm as Masiplujii hrasili(in<i, the type species of this genus, do 

 not possess any character of snflicient importance to warrant its sep- 





