NORTH AMERICAN DIPTERA. Z I 6 



0<loiitoiiiyis( Triiquii Relhirdi. 



Odontomyid Truquii Bellardi, Sagsio, etc., i, 37, tab. 1, fig. 11. 

 " Black and green. Head broad, front broadl.v black, above with two green 

 spots, below green ; ocelli brownish ; occiput green, with obsolete, lateral, brown 

 marks; eyes small, bare, minutely and regularly reticulated, posterior mai'gin 

 thick, green ; first and second joints of the antennje brown, third black ; face 

 green, shining, carinate, white tomentose ou the middle, thin, subnaked ; p-ilpi 

 greenish white, proboscis yellow, apex black. Thorax black, with thin, short, 

 golden pubescence; lateral margin from the humeri to the scutellum with a broad 

 green stri]>e; pleurse and pectus green, i)ile white; scutellum totally green, spines 

 yellow, halteres green, base yellowish. Abdomen broad, depressed, black macu- 

 lated with green ; first segment near the margins scarcely marked, second broadl.y 

 marked, lateral margin contiguous, anterior and posterior margins produced, the 

 appendix round towards the elongated median line, third and fourth with a sub- 

 (juadrate macula, lateral and posterior margins contiguous, fifth with a posterior 

 margin ; venter green, with very short, silvery tomentum. Legs green and brown, 

 base of the femora green, near the apex, and especially on the upperside, brown- 

 ish : base of the tibiae and base of the first .joint of the tarsi broadly brownish ; 

 apex of the tibije and tarsi black. Wings hyaline, anterior margin yellowish, 

 base browni.sh. Length 16 mm. ; wings 28 mm." (Bellardi) 



Cuernavaco, Mexico (TriKjiii). Collection of Bellardi. 



"Allied to the preceding [(>. Lefebrrei,'\ but distinguished hy the 

 first antennal joint being brown, large macula on front, and the 

 figure of the marking on the second segment, quadrate markings on 

 the third and fourth segments and the femora, being spotted with 

 brown." (Bellardi) 



This is certainly very close to 0. binotata Loew, and may prove 

 to be that species ; if so, it has priority. 



Odoiitoniyia prasina Jaenuicke. 



Odontomyia prasina Jaennicke, Neue. Exot. Dipt. 16 (in the A})h;indl. d 

 Senckenb. Ges. vol. vi). 

 %, . — Green, thorax black, with yellowish pilose. Abdomen with a black stripe 

 and two lateral black dots. Anteunje black. Length 13 mm. 



Mexico. "This species stands very close to 0. Lefebvrei Macq. 

 (Dipt. Exot. i, l'S9) ; it is, however, distinguished from the same as 

 follows : 



"1. The fir.st two antennal joints are black, and the second is, at 

 the base and at tlie tip, clear brownish red ; the third joint is black 

 above, beneath clear brownish red. 



" 2. The thorax above is covered with fox-red pubescence. 



" 3. The femora are entirely yellow without black markings, other- 

 wise everything as in (). Lefebvrei Macq., Mus. Darmst." (Jaennicke). 



TRANS. AM. KNT. SOC. XXII. (35) JULY, 1895. 



