WILLIS'I'ON: EXOTIC TABANID^. I93 



the lateral margins). Antennie ferriginous, the third joint black at 

 the extremity. Palpi dark pitchy black. Thorax shining black, the 

 mesonotum more brown and but little shining, and clothed with 

 yellowish irridescent tomentum. Wings brown and hyaline; the 

 brown extends as far as the tip of the first longitudinal vein, does not 

 quite reach the hind border, and has an angular sinus extending to 

 the fifth vein at the middle of the discal cell; a hyaline spot extends 

 across the fourth vein a little in front of the discal cell. Legs deep 

 brown; the four hind tarsi light yellow, the front metatarsi yellow or 

 yellowish; all the tibiae dialated. Length 5, 6, mm. 



Two specimens, Rio Paraguay, H. H. Smith. This species is at 

 once distinguishable from ^. lepidotus by the smaller size and wider 

 front. From S. (yHicmatopota) crassipes Wied. it will be distinguished 

 by the single hyaline spot of the wings and the yellow tarsi. 



Diachlorus curvipes Wiedemann, Auss. Zw. Ins. i, 170 (2\ibani(s); Macquart 

 Hist. Nat. Dipt, i, 208 {Diabasis). — South America. 



Female. Front a little broader below, light opaque yellow, the 

 prominent vertical tubercle clothed with short black hair, the black 

 or deep brown, shining callosity broader than long. Antennae red, 

 the third joint blackish distally; second joint not more than one- 

 third the length of the first, the third wholly without tooth. Face 

 broadly swollen in the middle, shining yellowish brown, the orbits 

 and the cheeks opaque yellow. Mesonotum on the sides and in front, 

 and narrowly behind, as also a slender median stripe, covered with 

 golden yellow pile; elsewhere the mesonotum is shining black. Scu- 

 tellum covered with the same yellow pile. Pleuree for the most part 

 black, lightly pruinose; in front and below the wings yellow. Abdo- 

 men shining reddish or brownish yellow, with a slender median stripe 

 of golden yellow pile. x\ll the femora reddish or brownish yellow; 

 the dilated front tibiae and the front tarsi dark brown; hind tibiae for 

 the most part brown; middle tibiae and their tarsi, except the termi- 

 nal joints, light yellow. Wings yellowish hyaline, brownish in front, 

 the apex brown. Length 9, 10 mm. 



This description does not fully agree with the original, nevertheless 

 there can be little doubt of the identity. Four specimens, Rio Para- 

 guay, Dec, H. H. Smith. 

 Diciielaoera (Diachlorus?) scutellata, n. sp. 



Female. Front not more than twice as long as its greatest breadth, 

 opaque light gray, with a large triangular callosity whose sides are 

 convex, and which extends to the ocelli. Antennae yellow, the annu- 

 late portion of the third joint black and hairy; first joint four or five 

 times the length of the short, globose second joint, the third joint 

 longer than the first two together; third joint with a minute tooth 



