54 SYNOPSIS OF THE DIPTEROUS 
Obs.—The veins of the wings are arranged in the same manner 
as in the last species. 
Species XX XIIT.— WM. lusitanicus, Wied. (in Meig. Syst. Beschr. 2, 130, and 6, pl. 66, fig. 
1, 2 ;and in Mon. Mid. pl. 54, fig. 18 ¢ 9.) Niger, thorace albo-vittato, abdomine albo 
annulato, in ¢ nigro, in Q luteo ; alis flavidis, pedibus nigris. Long. lin. 8, 9. 
Habitat in Lusitania. 
Specirs XXXIV.—WM. cinctus, Macq. (Hist. Nat. Dipt. 2, p. 655, pl. 24, fig. 19). Obscure 
niger, facie et fronte albido-pilosis. Antennis nigris, thorace vittis 4 griseo—villosis, 
lateralibus subtus fulvis, parapteris fulvis, lateribus testaceis, sterno nigricanti, scutello 
minuto testaceo, abdomine cylindrico, segmentis fulvo-marginatis lateribus fulvis, singuli 
disco fascia nigra angusta abbreviata, pedibus fulvis, femoribus posticis subclavatis, apice 
brunneis, subtus duplici serie spinarum brevium armatis, tibiis etiam breviter spinosis. 
Long. corp. lin. 84. 
Habitat Algeria, Oran. 
Srecrss XXXV.—M. rufipes, Westw. n. sp. Fusco-niger, segmento basali abdominis 
nigro, ceteris fulvis, apice subfusco, alis fuscis; pedibus fusco-rufis, antennis vix capite 
longioribus. Magnitudo Rhagionis scolopacei. 
Habitat Sicilia ? 
Species XXXVI.—M. notospilus, Wied. (Mon. Mid. pl. 54, fig. 20; Walk. in Linn. 
Trans. 17, 339.) Niger, thorace maculis 6 albis, abdominis fasciis pedibusque flavis. 
Long. lin. 7 @. 
Habitat Monte-Video, Brasilia. 
Species XXXVII.— WM. vittatus, Wied. (Mon. Mid. pl. 54, fig. 23.) Canus, thorace vittis 
nigellis, abdomine brunneo, albo-fasciato, antennis. nigris, pedibus brunneis, femoribus pos- 
ticis haud spinosis, alis limpidissimis. Long. corp. lin. 63 ¢. 
Habitat in Nubia. 
Obs. The veining of the wings in this species is similar to that 
of M. brevicornis ; the long closed central cell which runs parallel 
with the hind margin of the wing, not emitting the small transverse 
vem from near its apex to the hind margin. ‘The small closed dis- 
coidal cell near the extremity of the wing, is also represented (Wied. 
fig. 23 d) as destitute of the short oblique spur which exists in all 
the other species, and which is in fact figured in fig. 23,'and 23 a. 
Species XXXVIII.—WM. lineatus, Olivier (Enc. Méth. tom. 8, p. 33). Niger, thorace cinereo 
4-lineato, pedibus abdomineque nigricantibus, hujus segmentis albis, antennis nigris, 
femoribus posticis leviter spinosis vix incrassatis; alis pellucidis; venis nigris obscurius 
nonnihil marginatis. 
Habitat in Aigypto, Sakhara ; Olivier. 
Obs.—I do not think Olivier’s description accords sufficiently 
with that of M.vittatus to induce us to regard them as deseriptive of 
the same insect. If however identical, we must employ the name of 
lineatus for the species, instead of Wiedemann’s name vittatus. 
Specrrs XXXIX.—WM. Olivieri, Macq. (Dipt. Exot. Nouv. t. 1, part 2, p. 12, Rhopalia O.) 
Niger, pedibus rufis, facie capiteque subtus albo-pilosis, antennis nigris, sericie subgrisea 
indutis, clava maxima, thoracis lateribus supra originem alarum testaceis. Alis sub- 
fuscis. Long. corp. lin. 43. 
Habitat in AZgypto. In Mus. Reg. Paris. Olivier. An idem cum precedente ? 
Obs.—The hind tibie in this species terminate in two very minute 
spurs, scarcely visible. The wings agree with those of M. vittatus, 
in wanting the short appendiculated vein in the second submarginal 
cell, and in the absence of the short transverse vein in the middle 
of the hind margin. 
