73 



2. Abdomen black, sides of first two segments and nsnally tlie front 



coiners of tlie tliird, yellowisli, front femora almost wholly JVvvV 

 black, three sternopleural macrochiBtu' ; length, mm. Colorado 

 and sonthern California. (Jour. Acad. Nat. iSci. Philadelphia, 'v-^i-t-.-'T-^ 

 Vol, VI, p. 173 J 1820: Ocyptcra. iSfcrenia 2)ictipes JMgot, Ann. 



^^^Soc^Ent. France, p.,2;H; 1888. L ^^- v?^ arciiaia S;w. 



Abdoifien^vh^iRy yellow, "Iroiir-Ix^ii yellow*^cft ttVe base; 'a/- n 

 two sternopleural macrocha'ta'; length, nim. Northern Vir- l^ 

 ginia. (Jour. Acad. Nat. Sci. Philadelphia,* Vol. VI, p. 172; 

 1820: Fliasia. Tachina coryihns Walker, List of Dipterous 

 Insects, Part IV, p. 707; 1840. Waldbergla atripomis Towu- 

 send, Proc. Ent. Soc. Washington, Vol. II, p. 145; April 2, 

 1891.) atripennis !Say. 



Genus HEMYDA Desv. 



Hemydn Desvoidy, Essai snr les jMyodaires, p. 22G; 1830. 



Our single species is black, the palpi, humeri, a large spot on each 

 side of the second abdominal segment at the middle, the front corners 

 of the third segment, the coxa^., tibise and a large portion of the femora, 

 yellow; three postsutural and one sternoi)leural maciocha'ta^, scufellnm 

 bearing three jnarginal i)airs; frontal vitta highly polished; length, 

 11 mm. Northern Illiuois.K}.(Loc. cit.) anrata Desv. 



Genus BESKIA Br. and Berg. " ^ J 



Beskia Rraner and Eergenstanim, Zweif. Kais. Mnsenm Wien, IV, p. 139; 1889. 

 Ocypfcrosiplia Tnwnsend, .loiirnal N. Y. I^ut. Soc, \'ol. II, p. 79; .June, 1894. 



This synonymy has already been published by Dr. Williston.^ The 

 type species is black, tlie abdomen yellow, calyjiteres white, wings 

 smoky, three postsutural and three sternopleural macrochmtip; length, 

 G mm. P.oykins, Va. ; Tifton, Ga. ; and Texas. (List of Di])terous 

 Insects, Part IV, p. 70(); 1840: Tachina. Beskia cornnta P>rauer and 

 Bergenstamm, Zweif. Kais. Mus. Wien, IV, p. 170; 1880. Ocypiero- j,'^/~^ ^ 

 sipha wilUstoni Townsend, Journal N. Y. Ent. Boc, Vol, II, p, 70; ^' ■ J// '^^ 

 June, 1804.) a-lops Walk, 



Genus ISOGLOSSA Coq. 



Isoglossa Coqnillctt, Canadian Entoiiiolonist. Vol. XXVII, p. 12;"); May, 189.5. J^L'-f' '^^^--^.e,^ JTH 



The type species is black, the palpi, sides of last three abdominal t/ 



segments excei)t the hind margins of the second and third, and the 

 apex of the abdomen, yellow; three ])ostsntural and three sterno[)leural 

 macrocha'tu'; length, G mm. From the type specimen. Los Angeles 

 County, Cal. (Loc. cit., p. 12G.) hastata Coq. 



I Manual X. AnuT. Diptera, i>. 119; 1896. 



