CRTALID-ffi — RIVELLIA. 89 



Ortalis Ortoeda Walk. List, IV, p. 992. 

 Ortalis quadrifasciaia Walk. List, IV, p. 993. 

 Herina rufitarsis Macq. Dipt. Exot. Suppl. V, p. 123, 7. 

 Tephritis melliginis Fitch, First Rep. 65. 



Blackish-green, shining ; the upper side of the thorax sometimes 

 less so ; recently excluded specimens acquire a somewhat steel- 

 blue tinge after drying. Front reddish-brown, often very dark, 

 of the usual breadth, with a very narrow border of white pollen 

 on each side. Face and clypeus metallic black; the narrow 

 lateral portions of the face, bordering on the eyes, brownish-red, 

 more seldom dark-brown. Antennae reaching to the edge of the 

 mouth, brick-red or yellowish-red ; the third joint gradually 

 turning black towards the tip. Ovipositor and feet black; the 

 tips of the four anterior tibiae usually brownish brick-red ; the 

 first joint of the two front tarsi and the first two joints of the 

 four posterior tarsi pale brick-red. Crossbands of the wings 

 black, rather narrow ; the first three, which are entirely sepa- 

 rated from each other, reach from the anterior margin to the 

 fifth longitudinal vein ; the fourth band, bordering the end of the 

 anterior margin and the apex, is often connected with the third 

 only by a rather narrow black border of the anterior margin ; the 

 portion of the costal cell between the first and the second cross- 

 bands has a dingy, somewhat yellowish appearance. The small 

 crossvein is far beyond the middle of the discal cell and the 

 second section of the fourth longitudinal vein is very much arcu- 

 ated. Halteres black. 



Hab. New York ; Georgia ; Bistr. Columbia (Osten-Sacken). 



Observation 1. — The attentive reader of Walker's description 

 of Ortalis Ortoeda will easily notice that, before the end of the 

 fourth line, previous to the comma, several words have been 

 accidentally omitted, so that the end of the sentence does not 

 refer, as it should, to the second, but to the third crossband. 

 What Mr. Walker meant to say results sufficiently from the next 

 description, that of 0. quadrifasciata, which reproduces again 

 the present, apparently very common, species. The fact that the 

 measurements of 0. Ortoeda and quadrifasciata are different in 

 Walker does not prevent me from considering them as one and 

 the same species. Under the former name Walker describes a 

 male ; under the latter, a female ; hence, the greater size of the 

 latter has nothing surprising. Instead of the length of the single 



