NORTH AMERICAN DIPTERA. 275 



scutellum short, yellowish; haltcres yellow. Abdomen broad, sliort, suborbicular, 

 depressed, black; third aud fourth segments near the angle of the lateral and 

 posterior margins marked with reddish yellow, margins of the fifth segment red- 

 dish ; venter reddish yellow; base and inferior vitta of femora black; apex of 

 the femora, the tibite and tarsi reddish yellow ; apex of the tarsi brown. Wings 

 hyaline, anterior margin yellowish (Bellardi). 

 Length 7 mm. ; wing 14 mm. 



Mexico (Craveri). Collection of Bellardi. 



0<Ioiitoiiiyia feinoratift Bellardi. 



Odontomi/in femornta Bell., Saggio, etc., i, 37. 

 9 . — Black, marked with yellow ; tomentum yellow ; front broad, black, with 

 a transverse stripe and two dots near the base of the antennse yellow ; first and 

 second joints of the antennte black, third wanting; face yellowish, with obsolete 

 yellow hairs, strongly produced, middle tuberculate, tubercle marked with brown, 

 margins of the epistoma marked with black : proboscis black. Thoi'ax black, 

 tomentose yellow ; lateral margins and posterior macula yellowish ; pleurte yellow, 

 pectus black ; scutellum black, with a broad yellow border, s]nnes yellow ; halteres 

 yellow. Abdomen depressed, black, tomentose yellow; second, third and fourth 

 segments near the lateral margin yellowish ; venter yellow, immaculate. Legs 

 yellow, underside of the anterior and posterior with a short black vitta. apex of 

 the tarsi brown. Wings hyaline. Length 8 mm. ; wing 16 mm. (Bellardi). 



Toluca, Mexico (de Saussure). Collection de Saussure. 



This may possibly be the 9 of the ])receding ( 0. quadrlmaculata). 



Odoiitoinyia einargiiiata Macquart. 



O(hinfomi/i(i emarginata Macquart, Dipt. Exot. i, 1, 190. 



Sfratiomi/s emarciinuta Walker, List, etc., v, 40. 

 Length 4.1 1. % . — Black. Abdomen yellow, with a broad, biemarginate, black 

 stripe. Face a little prominent, black, with short, white pile. "Front aiiferieu- 

 rement blanc." Antennae black. Thorax entirely black, with short yellow pile ; 

 posterior border of the scutellum and spines yellow. Abdomen yellow (perhaps 

 green when living), a large dorsal strip of black, profoundly indentated at the 

 posterior margin of the second and third segments; venter greenish yellow. Legs 

 tawny or brownish, femora more or less black above ; tarsi brown ; halteres white. 

 Wings hyaline, outer margin slightly yellow, five posterior cells. 



Mexico (Macquart). 



Odoutoniyia flavifasciata Macquart. 



Odontomijia fl<ivifasciata Macquart, Dipt. Exot. 4e, Suppl. 53. 

 Length 6 1. 9 .—Black. Abdomen maculated on the sides with yellow ; second 

 segment with a yellow band. Face greenish yellow, carinate ; front black and 

 prominently separated by grooves in four parts ; base yellow. Autennse, first 

 and second joints testa,ceous, third black ; back of the head margined with yel- 

 low. Thorax black, a yellow stripe extends from the anterior to the posterior 

 margin on each side above the insertion of the wings ; pleurte and pectus green, 

 with a long yellow spot ; pile yellow ; scutellum yellow. Abdomen black ; second 

 segment with a large band of greenish yellow interrupted in the middle ; third 

 and fourth with an almost square yellow spot on each side ; fifth margined with 



TRANS. AM. ENT. SOC. XXII. JULY, 1895. 



