236 CHARLES AV. JOHNSON. 



!§itratioui.yia norma Wiedemann (Tl. iii. figs. 17, 18). 



Stratiomys norma Wied., Auss. Zw. ii, 62, 3. 



Length % 9 12-13 min. J . — Face, lower part of the front, frontal and vei'- 

 tical orbit.s, ocelli and upper part of the occiput black, with yellowish pile : facial 

 orbits, a large spot on the front and vertex extending on each side of the ocelli 

 over the vertical angle and the lower part of the occiput yellow. Antennne 

 black. Thorax black, with yellow and brownish tomentum ; scutellum yellow, 

 base black ; spines red. Abdomen black, with yellowish and blackish pile, and 

 the following yellow, or greenish yellow markings ; a pi'ominent triangle at the 

 posterior angle of the second segment, third with a small triangle at the anterior 

 angle, a transverse marking at the lateral posterior margin, and a small dorsal 

 triangle at the posterior margin: fourth with a lateral margin widest anteriorly, 

 a transverse marking on the lateral jjosterior margin, and a prominent dorsal 

 triangle at the ])osterior margin ; fifth with a narrow lateral margin, and a dorsal 

 vitta widest anteriorly ; venter black ; second segment yellow, with two elongate 

 spots along the anterior margin; third, fourth and fifth with a narrow lateral 

 and posterior margin of yellow. Femora red, with a wide preapical band of 

 brownish black ; tips of femora and the basal half of the tibisB yellow, outer half 

 of the tibiae and tarsi red. Wings brownish, hyaline; veins red. 



■J, . — Face wholly black ; the small dorsal triangle on the third segment and 

 the greater amount of yellow on the scutellum distinguishes it from S'. nonnnla. 

 Femora brownish black ; in some specimens showing a preapical band of black on 

 the middle and posterior femora, tibiae and tarsi reddish yellow. 



Philadelphia, Pa. ; Agricultural College, Mich., June 20 (Duvi.s) ; 

 Elkhart, liid. (J. R. Weith) ; Algoncpiin, 111., June 1 (Dr. Nason) ; 

 Burlington, Iowa (Dr. H. G. Griffith); Sand Hills, Neb., July 

 (Univ. Neb.) ; Allegheny, Pa. (Aldrich). 



Stratioiiiyia iiiiiliiubata Loew (PI iii, figs. 19, 20). 

 Stnttiomyia uniUnihata Loew, Centnr. vi, 6. 



Length 'J, 9 13 mm. % . — Face, frontal and vertical triangle black ; face with 

 long white pile. Autennte black, under side of the third joint brownish. Thorax 

 black, with a whitish pile, which is longest on the pleurge ; scutellum and spines 

 yellow, base black. Abdomen black, with the following yellow markings on the 

 segments: second with a large lateral triangle; third with a small subtriangular 

 spot at the anterior angles, a transverse marking at the lateral posterior margin, 

 and a very small dorsal triangle at the posterior margin ; fourth With lateral and 

 posterior margins, the latter with a small dorsal projection ; fifth with a slight 

 lateral margin towards the anterior angles, and a subtriangular dorsal mark not 

 reaching anterior margin : venter black, segments with yellow posterior margins, 

 widest on the second segment, where the black is widely interrupted. Femora 

 black, tips of the femora, basal half of the tibiae and the tarsi, yellow ; outer 

 half of the tiV)iiB, the last two and tips of the other tarsal joints blackish ; the 

 outer half of the posterior tibiie is normally brownish, with a medial ring of 

 black. Wings brownish hyaline ; veins reddish, 



9 . -Face, front, vertex and occiput black ; pile on the face whitish, thickest 

 along the orbits; front with a small, yellow, subcordate spot below the ocelli ; 

 lower part of the occiput, an obscure greenish yellow. Thorax black, with sh(»rt 



