290 Miss G. Ricardo on the Pangonine 
pp. 15, 26 (1860); Schiner, Reise Novara, p. 97 (1866). [ Erodio- 
rhynchus eristaloides, Macq., Dipt. Exot. i. p. 111, pl. vi. fig. 1 
(1888); Walker, List Dipt. vy. Suppl. 1, p. 146 (1854).]—Cape of 
Good Hope. 
*R. denticornis, § 2, Wiedem., Auss. zweifl. Ins. i. p. 111 (1828); 
Walker, List Dipt. pt.i. p. 192 (1848), pt. v. Suppl. 1, p. 275 (1854) 
(Silvius); Loew, Dipt. Siidafrik. pp. 21, 26 (1860); Ricardo, Ann. 
& Mag. Nat. Hist. (7) vi. p. 163 (1900). [Dichelacera binotata, 
3 2, Macq., Dipt. Exot. i. p. 113 (1838); Schiner, Reise Novara, 
p. 97 (1866). |—Cape of Good Hope. 
R. esas ¢, Loew, Dipt. Stidafrik. p. 26 (1860).—Cape of Good 
ope. 
R. pusilla, 3 2, Schiner, Reise Novara, p. 97 (1860) ( Erodiorhynchus).— 
Cape of Good Hope. 
Ruinomyza, Wiedem. 
The third joint of antennz with a long 
tooth-like projection ...........-.... IE 
The third joint of antennz with no tooth- 
likemprojection Memneriere orm: raat aries 
1. Black, shining. Tyes hairy............ costata, $, Loew. 
2. Brown. Legs blackish brown.......... fusca, 9, Wiedem. 
3. Yellow. Legs yellow. Eyes bare...... denticornis, $ 2, Wiedem. 
4, Black, shining. Legs black and brown .. edentula, ¢, Wiedem. 
5. Blackish brown. Legs reddish yellow. 
Abdomen with white bands on posterior 
borders of segments. Eyes hairy...... pusilla, 3 2, Schiner. 
The antenne in the type of costata were defective, so that 
it is only placed under those species with a tooth-lke pro- 
jection of the third joint of antennz on supposition. The 
species pusilla is placed under Rhinomyza, but may prove to 
belong more correctly to the genus Silvius. 
Rhinomyza denticornis, Wiedem. 
Three males and six females from Natal. 
Siivius, Meigen. 
Silvius, Meigen, Syst. Beschr. iii. p. 27 (1820) ; Loew, Dipt. Stidafrik. 
pp. 15, 21 (1860) ; Schiner, Reise Novara, p. 97 (1866). 
Mesomyia, Macq., Dipt. Exot. Suppl. 4, p. 88 (1850). 
Ectenopsis, Macq., Dipt. Exot. i. p. 111 (1838). 
Veprius, Rond., Archiy. Canestr. iii. p. 18 (1863). 
Loew, in his Dipt. Siidafrik., should be consulted for the 
characters of this genus, the species of which are not very 
numerous. 
Owing to want of material, the tables of the species have 
been drawn up in great part from the descriptions and are 
only published in the hope that they may be of some use in 
the identification of species, and may soon be replaced by 
others based on the examination of the species themselves. 
