S. W. WILLISTON, M. D, '61 



a'roinachus Fitchii. 



Trupanea apivora Fitch (not "Walker), Country Gentleman, vol. xxiv, p. 63, 

 1864; Reports, iii, 251-256 j tab. 4, fig. 7. 



Promachus apivorus Osten Saeken, Cat. Dipt. 78. 



Promachus Fitchii Osten Saeken, Cat. Dipt., Note 121, p. 234. 



% , 9 ■ — Length 22-26 mm. Head rather thickly clothed with light yellowish 

 whitish liair and pollen, the occipito-orbital bristle and the hair of the palpi some- 

 times black. Antennae rather distant at their base, brownish red, the third joint 

 black, not broad. Thorax densely gray poUinose and with nearly white pile; 

 markings of the dorsum indistinct, clothed nearly wholly with very short black 

 hair; bristles black. Abdomen rather broad, especially in the female, wholly 

 clothed with moderately abundant and recumbent yellowish gray pile, narrowly 

 bare at the incisures ; hypopygium elongated, mostly reddish, clothed above with 

 recumbent silvery white pile. Wings rather small, only lightly tinged ; veins 

 luteous. Legs red, with light colored pile and black bristles, the femora often in 

 large part black on the under side. (The eyes of this species are of a brilliant 

 green in life, traces of which often remain in the dried insect.) 



Bab. — Neb. (Fitch), Kaas., Conn. 



A single specimen from Minnesota (Mr. E. Keen), too much rubbed 

 for description, may be confounded with this. The antennse are, how- 

 ever, situated close together at their base, the face is much more promi- 

 nent below, the femora are black, and the tibiae more yellow. 



Promachus rufipe.s. 



Asilus rufipes Fabricius, Syst. Ent. 794, 16; Ent. Syst. 383, 32; Wiedemann, 

 Dipt. Exot. i, 203, 38, Auss. Zw. Ins. i. 487, 93. 



Dasypogon rtifipes Fabricius, Syst. Antl. 169, 23. 



Promachus rufipes Schiner, Verb. Z. B. Ges. xvi, 688; Osten Saeken, Cat. Dipt. 

 78; V. d. Wulp, Tijdschr. voor Ent. xxv, 107. 



%, , 9 . — Length 26-30 mm. Antennse black, with more or less short black hair 

 on the first two joints, third joint small, not broader than the first. Front and 

 face densely covered with light grayish yellow pollen, face bare ou the sides and 

 with only a little hair of the color of the pollen; the bristles in the middle and 

 in the oral margin are rather strong and sparse, of a little lighter color than the 

 face, though sometimes a little intermixed with black ones. Front with some 

 short black hairs. Occipito-orbital bristles (in part or wholly) and the beard yel- 

 lowish white. Thorax dark reddish brown, the dorsum above with two broad^ 

 darker stripes, narrowly separated and obsolete behind, in front with short black 

 hairs, behind with sparse black pile and black bristles; pleurae with sparse black- 

 ish pile in the middle and straw-yellow pile in front, and behind in the row in 

 front of the halteres. Abdomen elongate, not at all convex on the sides, densely 

 light grayish yellow pollinose on the posterior half of each segment, and on the 

 sides and venter, on the front portion of each segment (nearly a half of the width 

 in the anterior segments, but less behind) not extending to the sides, and rounded 

 on the posterior angles, opaque black ; the line between the black and yellow is 

 sharply marked; the pile is recumbent not abundant, except on the sides in front 

 and on the venter, where it is quite long; on the black it is more or less black, 

 elsewhere like the pollen (the light pile may encroach more or less on the bl&ck 



