418 INSECTA SAUNDERSIANA. 
3 Genus MYCETOBIA, Meiy. 
Mycerronia DIvERGENS, Mas. 
Nigra, nitens ; abdomen fasciis indistinctis fulvis ; pedes testacet, tarsis 
Fuscis ; ale subcineree, venis nigris. 
Black, shining. Antenne longer than the thorax. Abdomen with 
dark indistinet tawny bands. Legs testaceous; tarsi black. Wings 
slightly tinged with gray; veins black, tawny at the base. Halteres 
testaceous. Length of the body 2 lines ; of the wings 4 lines. 
This species differs from M. pallipes in the structure of the radial 
vein, which is much curved, and extends to the tip of the wing. 
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a Genus SCIARA, Fabr. 
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3 Div. A, a. Meig. Dipt. vi. 305. 
3 ScIARA PRIMOGENITA, Foam. 
3 Altra ; antenne sat valide, thorace vix breviores ; abdomen latiusculum, 
; thorace duplo longius ; pedes validi, subpubescentes ; ale nigri- 
4 cantes, latiuscule, basi et apud costam nigra. 
3 Deep black. Antenne rather stout, nearly as long as the thorax. 
Abdomen rather broad, about twice the length of the thorax. Legs 
stout, minutely pubescent. Wings blackish, rather broad, black towards 
the base and along the costa; veins black; forks of the subapical vein 
almost as long as the basal part. Length of the body 3 lines; of the 
wings 8 lines. 
Cayenne ? 
Div. A, b. Meig. Dipt. vi. 305. 
Scrara Luria, Fom. 
Nigra; abdomen piceum, subtus fulvum ; pedes fulvi, tibiis tarsisque 
fuscis ; ale fusce; halteres fulvi. 
Sciara lurida, Cat. Dipt. Brit. Mus. i. 106. 
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