FAMILY M1DASIDA2. 
51 
Species IV.— AT. rubidapez , IVied. (Mon. Mid.pl. 52, f. 2.) Niger antennis apicerubris 
alis rubido-flavis extrema basi nigris. Long. lin. 17—19. Mexico. 
Species Y.— AT. mystaceus, Wied. (Mon. Mid. pi. 52, f. 3.) Ater antennis rubidis, 
epistomate utrinque albo-piloso £. Long. lin. 16. Surinam. 
Species VI.— AT. annulicornis y Westw. n. sp. PI. 13, fig. 2. Niger barba epistomatis 
nigra, antennis (nisi articulis 2bus basalibus)fulvo-rubris, annulo nigro ad apicem articuli 
3tii; thorace vix cinereo vittato, abdominis segmento 2do nigro-viridescenti, 3bus 
ultiinis nigro-caerulescentibus. Alis fusco-nigricantibus, basi venis obscurioribus, margine 
postico pallidius infumato $>. Long. corp. lin. 16. Exp. alar. 2 unc. 8 lin. 
Habitat in Brasilia. Mus. D. Miers. 
Species VII.— AT. Bonariensis, Serville, Guer. Icon. R. An. Ins. pi. 97, f. 5. (Buenos 
Ayres.) 
The description of this species has not yet been published. 
Species VIII.— AT. nitidulus , Oliv. (Enc. Me'th. 8, p. 83. Wied. Mon. Mid. pi. 52, f. 4.) 
Thorace nigro albido-vittato; abdomine subcupreo, utrinque viridi-aureis maculis, alis 
translucidis fusco nonnihil ad costam tinctis. Long. lin. 16. 
(Syn. AT. nitida. Lichtcnst. Mus. Holtbuys. p. 213). 
Species IX.— AT. crassipes , Westw. n. sp. PI. 13, f. 3. Totus niger, thorace abdomineque 
nitidis, antennis breviotibus, pedibus brevibus femoribus posticis incrassatis dentatis,alis sub- 
pellucidis, vena 3tia longitudinali apieeque fusco tinctis. Long. corp. lin. 16. Exp. 
alar. 2^ unc. 
Habitat in America septentr. ? Mus. Hope, e Mus. Children. 
Species X.—AT. tricolor , Wied. (Mon. Mid. pi. 53, f. 5.) Thorace femoribusque posticis 
rubidis ; epistomate aurato : abdomine chalybaio. Long. corp. lin. 13 £. 
Habitat in insula Cuba. 
Species XI.— AT. tibialis, Wied. (Mon. Mid. pi. 53, fig. 6.) Niger tibiis tarsisque fiavis 
alis fuscanis. Long. lin. 13. £. Ex Baltimore. 
Species XII AT.politus , Wied. (Mon. Mid. pi. 53, f. 7.) Thorace nigro glabro, abdomine 
cupreo ; alis nigris, pedibus ferruginosis. Long. lin. 13. $. 
Habitat—? 
Species XIII.— AT. auripennis , Westw. (in Lond. and Edinb. Phil. Mag. April, 1835), 
PI. 14, fig. 1. Niger, capite, antennis, collo, angulis anticis thoracis, abdomine (segmento 
basali marginibusque 3tii segmenti supra et segmentis tribus intermediis subtus) pedibus- 
que (nisi femoribus ad basin) Imte fulvis ; alis auricoloribus macula versus apicem costae 
nigra margineque interno pellucido; mesosterni lateribus unispinosis. Long. corp. lin. 11. 
Expans. alar. lin. 19. 
Habitat in Nova Hollandia. Mus. Hope et nostr. 
05.9.—The veins of the wings in this species differ from those of 
all the others, the anterior branch of the fourth longitudinal vein 
dividing and forming a small closed oval cell (appendiculated at its 
extremity, but wanting the small oblique appendiculated vein at its 
base above) near the apex of the wing, whilst the long closed cell 
near the middle of the hind margin is not pedunculated at the 
extremity most distant from the body, as in almost every other 
species. 
Species XIV.— At. clavatus. Niger, abdominis segmento 2do aurantiaco; alis nigris. 
Long. lin. 10—12. 
Habit in Amer. Boreali. 
Syn. ATiisca clavata,T)mry. Ill. vol. 1, pi. 44, f. 1. App. vol. 2 (1773). 
Nemotelus asiloidcs, De Geer, Mem. v. 6, t. 29, f. 6. 
Bibio jilata, Fabr. Mantissa, Ins. ii. p. 328. 1. (1787.) 
AlifdasJ'., Fabr. Syst. Anti. Midas f. Wied. Mon. Mid. pi. 53, f. 8. 
Bibio illucens , Fabricius. Syst. Ent. 756.1. 
Species XV.— AT. atralus, Macq. (Dipt. Exot. t. I, r pars2, p. 11.) Niger, abdomine 
depresso £ , segmento ultimo supra macula rufescenti, alis fuscis venis obscurius margi- 
natis. Long. corp. 11 lin. £ $. 
Habitat—1 An var. pnecedentis? 
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