276 S. W. WILLISTON, M. D. 



9 . — Front of equal width, shining green with yellowish pile ; below the some- 

 what swollen vertical portion, the front is excavated, leaving a large, obtuse, 

 median tubercle. 



Five specimens, Chapada. There is a more or less ill defined yel- 

 low spot or stripe on the anterior part of the cheeks. 



58. Voliicella fuscipeiinis Macq., Dipt. Exot. ii, 2, 24. 



Two male specimens, CJhaj^ada. The species, as Macquart observes, 

 is nearly related to V- vesiculosa. The wings have a minute stigmatic 

 spot, and in both specimens the marginal cell is narrowly open. 



APOPIIYSOPIIORA gen. nov. 



Allied to Volucella. First two joints of the antennte short, third 

 elongate ; arista plumose. Face descending downward as in Volu- 

 cella, with a well-marked tubercle ; sparsely pilose. Front in female 

 narrowed above, on each side with a crescent-shaped groove ; tuber- 

 culate, one tubercle at the vertex, bearing the ocelli, the other about 

 midway between it and the base of the antennae ; eyes of male con- 

 tiguous. Sides of thorax and margin of scutellum with bristles. 

 Scutellum strongly gibbose and tuberculate above. Abdomen short, 

 broad, flattened. All the femora and tibite are ciliate. Eyes pilose, 

 leaving numerous separated or subcontiguous round lighter colored 

 spots bare. Marginal cell closed or open. 



59. Apopliysopliora liirtipe!>i Macquart {Volucelln). 



% J. — Lengths — 9 mm. ; width of abdomen 5 mm. Black, abdomen partly 

 luteous ; feet pitchy reddish black ; wings grayish hyaline with a large brownish 

 yellow spot; hind tibije crescentic. Face shining black, the prominent rounded 

 tubercle somewhat pitchy; pile moderately abundant, white; cheeks behind 

 with a yellowish spot or stripe. Third joint of anteinije reddish brown, cine- 

 reous, not excised on either border; arista with dense short pile on its whole 

 length and less abundant, longer plumosity of the ordinary Volucella. Median 

 frontal tubercle of the female less projecting than the vertical one; vertex with 

 black pile. Mesonotum shining black, with bronze or metallic reflections; not 

 thickly pilose, in front and behind light colored, cross the middle, black. Scu- 

 tellum pitchy red. black and yellow pilose ; strongly gibbose above, forming two 

 stout, obtuse, tubercles, separated by a shallow, broad notch, the superior poste- 

 rior part shallowly concave ; viewed from in front the tubercles appear to be on 

 the margin of the scutellum, but from the side there is seen a flattened declivity 

 to the rounded margin upon which the bristles are implanted. Abdomen shin- 

 ing, black, or ])itchy black, the base luteous on the sides. Legs reddish, or 

 pitchy brown or black, the pile black ; all the tarsi, except the hind metatarsi, 

 reddish yellow; hind tibia; very much dilated, crescentic; hind metatarsi 

 swollen. Wings nearly hyaline at base, lightly iufuscated without and behind ; 

 near the middle in front with a large difl'use brownish sjiot ; veins mostly yellow ; 

 marginal cell closed or narrowly open. 



