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Magnitudine, habitu et nervis transversis approximatis T.
sordida; affinis, sed nigrior, nitidior, antennarum articulo ultimo
paullo minore nervisque distinctioribus, nigris, aliter directis.
Epistoma argenteum. Palpi breves, albi. Thorax ater, nitidus,
lateribus cura scutello cinerescens medioque lineis ejusdem
eoioris obsoletis notatus. Pedes nigri, farsis fuscis; antici coxis
fusco-testaceis, albido-pubescentibus, geniculis testaceis; postici
recti. Nervi alarum transversi, ordinarius et medius, in lineam
satis obliquam, nec fere transversam, approximati. Nervus
longi tudinalis quintus excurrens, sextus obsoletus basi apiceque, nec
apice tantum, abbreviatus, nervo transverso interjacente angulo
recto exeunte, ideoque omnino transverso, nec oblique recurrente.

Paramesia tenella N. Sp. supra fusca, subtus cinerea; ee!a
antennarum tenui; fertioribus inermibus, testaceis; tibiis, tarsis
hulle-rumque clava infuscatis; alis immaculatis, fumatis, costa
breviter spinulosa, nervo secundo longitudinali recto, ramo superiori
nervi tertii basi flexo. Long. H lin.

Haibitat ad Quickjock d. 8 Aug., rarissime.

Ceteris minor, gracilior, pedibus dilutioribus alarumque
colore magis in brunneum vergente <listincta. A. P. Bohemanni
(Brachystoma Boh&manni Zett.) de cetero recedit seta longiori,
tenuiori, costa breviter spinulosa, nervo longitudinali secundo
recto, nec apice curvato, ramo superiori nervi tertii basi flexo, nec
subrecto, et area denique apice mu-lto minus elongata. A. P.
Escheri (Br. Escheri Zett.), cui proxima, distat femoribus
muticis, nec apice spina utrinque armatis et area alarum apice
minus producta. A. P. Zetterstedli (Br. Zetlerstedti Zett.)
femoribus quoque muticis, costa brevius tantum spinulosa, areae forma
et alis dilutioribus diversa.

Vix P. Robertii Macquart.

Brachystoma Zett. Dipt. Seandpraeter veram Br.
longicor-nem ’Me*g., cui nomen servandum, 5 species continet, scilicet
fir. We ster manni j Bohemanni, EscheriZetterstedti et Wesmtvlii>
quae, ut suspicatur CeL Auctor, proprium sine dubio
constituunt genus, jam a Dom. Macquart Paramesia dictum, cum quo
nova nostra P. tenella et Wiedemannia saltem appendiculata,
conjungi debent. Moribus et vivendi ratione cum Htjdrophoris
proxime conveniunt Paramesice Wiedemanniceque, transitum ab
Em-pidiis ad Dolichopodes formantes. Ripas humidas glareosas et
arenosas amant, in superficie aquae ocissime volitant, vel alas
motitantes ^celerrime currunt, et saepe sub marginibus cymbae,
nuper advectae, copiosae congregantur.

Rhamphomyia paradoxa N. Sp. pilosa, opaca, obscure c-inerascens;
haustello capite fere dimidio longiore; thorace nigro-bivittato;
pedibus nigro-fuscis, metatarsis omnibus incrassatis, intermediis

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