4'M Miss G. Ricarclo on (he Pangoniutu 



darker in colour, tlio pubescence black, cliicfly on tbe sides 

 and on the posterior i>cgnu>nts ; there are some Mhitisli liairs 

 on the posterior border of the filth segment and on the sides 

 of the second; third, fourth, lil'th, and sixth segments ; the 

 xnidcrside is yellowish brown, with irregular ])laek hands and 

 black pubescence. On the other female specimen there arc 

 also fringes of ■white hairs on the posterior borders of the 

 segments. Legs reddish brown, the femora darker, the 

 pul)escence black, long on the femora, short and thick elsc- 

 wliere. Wings grey, with brown veins, all the cross-veins 

 shaded, those enclosing the basal cells most intense; no 

 appendix. 



Length 10 millim. 



This small species is easily distinji^uishcd by the grey spots 

 on the thorax, the thick tul'ts of white hairs at the sides, and 

 the shaded wings, which arc considerably longer than the 

 abdomen. 



ScioxE, Walker. 



Scione, Walker, Dipt. Sauud. pt. i. p. 11 (I80O) ; llicardo, Ann. & Mag. 



Nat. Hist. (7) V. pp. 98, 103 (1900). 

 Diclisa, Schiner. Keise der Novara (1866) ; id. Verb. zooI.-Lot. Gesoll. 



Wien, xvii. p.' 310 (1867). 



Por list of the described species of this genus see Ann. & 

 Mag. Nat. Hist. (7) v. p. 104 (1900), to which must be added 

 the two new species described by me in the same publication 

 (vol. vi. p. 291, 1900) and the two described below, bringing 

 the number up to eleven, all of which come from S. America, 

 with the exception of S. swfjvlaris, ]\Iacq., from Australia, 

 and a. Alluaudi, Giglio-Tos, from the Seychelles, neither of 

 which seem typical of the genus, and will probably have to 

 be removed. There is a great similarity in the colouring and 

 pubescence of the abdomen of the different species, which 

 must be chiefly distinguished by the wings. The description 

 of the female oi iacompleta given by IMacquart in his fourth 

 supplement of Dipt. Exot. does not seem applicable to this 

 species, as Schiner remarked. 



1 . Eyes hairy 2. 



Eves naked 12. 



'2. Wings smoky brown, with a clear band. 3. 



Wingy witli some or all the cross-vein.s 



shaded 4. 



Wings hyaline 7. 



3. Abdomen yellowish brown, with black 



marking.s. I^egs yellow fvsca, ?, IJicurJo. 



4. Wings with the vein from the discal 



Cell complete .'"). 



