270 CHARLES W. JOHNSON. 



Oflonloiiiyia obsciira Olivier. 



Odontumyin ohscura Oliv., Eucy. Meth. viii, 433, 7; Macquart, Dipt. Exot. i, 

 2, 189 ; Day, Proc. Acad. Nat. Sci. Phila. 1882, 88. 



Odontomyio brevipennis Oliv., Ency. Meth. viii. 434, 13; Day, Proc. Acad. 

 Nat. Sci. Phila. 1882, 86. 



f Strafiomys obscura Walker, List, etc., v, 38. 

 Length % 10 mm. — Face and vertical triangle black with yellow pile : first and 

 second joints of the antennse yellow, extreme tips of each brownish ; third joint 

 black, proboscib black. Thorax black, densely covered with yellow pile ; scutel- 

 lum black, spines small, yellow; halteres greenish. Abdomen Idack, with dense 

 yellow pile; second and third segments with yellow triangles at the posterior 

 angles (smallest on the third), which are greatly attenuated along the posterior 

 mai'gin ; a narrow lateral margin of yellow to all except the first segment ; there 

 is a slight extension of this margin along the posterior edge of the fourth ; venter 

 yellow, slightly marked with black. Femora black, tips of the femora, tibise and 

 tarsi yellow, an ob-solete medial and apical band on the anterior and middle tiVjise 

 and the outer half of the posterior tibite brownish. Wings hyaline, veins yellow, 

 discal cell emits three veins, third longitudinal simple. 



9. — Face, front and vertex black: shining, with whitish pile, facial iirotuber- 

 ance prominent; vertical angle, occiput, a transverse band across the upper por- 

 tion of the front (slightly interrupted), two irregular spots between this and the 

 autenuiB, which are laterally attenuated and narrowly connected with spots on 

 the orbits opposite the base of the antennae ; cheeks and a sj)ot on each side of 

 the upper angle of the epistoma yellow. Thorax black, with yellowish pubes- 

 cence, pilose on the pleurae and jiectus; an irregular spot on the pleurse and scu- 

 tellum greenish yellow; spines yellow and very small. Abdomen black; the 

 yellow triangles are ob-solete, but indicated by the much longer, whitish tomen- 

 tum, two yellow subdorsal spots on the posterior margin of the second segment 

 represent the inner angles of the triangles so prominent in the male ; a narrow, 

 continuous, lateral margin to all except the first segment, and the posterior margin 

 of the fifth yellow ; venter black, posterior margin of the first, and a large quad- 

 rate mark on the second, greenish yellow. 



St. Augustine, Fla., I ; Cliarlotte Harbor, Fla., March, S 9 

 (Mrs. Slosson) ; Carolina (Olivier) ; Boykins and Norfolk, Va., June 

 10, 12. 



Olivier undoubtedly had the male and female of the same species. 

 The specimens before me agree so well with his descriptions that I 

 have no doubt of their identity. 



Odontoniyia viridis Bellardi (PI. iv, fig. 18). 



Odoutomym riridis Bell., Saggio, etc., i, 36, tab. i, fig. 16. 

 9 . — Green, marked with black. Head broad, front very broad, with trans- 

 veree black stripes; first on the vertex ; third at the base of the antennae; second 

 intermediate, arcuate, and interrupted ; eyes small, obsoletely tomentose ; poste- 

 rior margin green. Antennae short, reddish. Face green, prominent, with two 

 black spots, epistoma near the sides black, palpi yellow, proboscis thick, wholly 

 black ; dorsum of the thorax black, golden tomentum ; a broad, gi-een. longitu- 

 dinal stripe from the humeri to the base of the wings; lateral margin black. 



