62 CYRTIDAE OF NORTH AMERICA 



Osten Sacken in Western Diptera doubtfully refers a specimen 

 to 7nelamyus. "Tibiae brown, not black; borders of tegulae very- 

 pale brownish ; the wing veins are very pale, except those near the 

 costa, which are brownish." 



There are four specimens labelled melampus in the United 

 States National Museum, from Santa Cruz Mountains, California. 

 They are quite varied in size and coloring. None are black and 

 all have brown wing veins. There is a slight brownish tinge to 

 the wings. The legs are brown. Only two specimens have typ- 

 ical abdominal markings. The markings on the venter may vary 

 considerably. One specimen from Rio Piedras Verdes, Sierra 

 Madre, Chihuahua, Mexico, 7,300 feet (coll. Townsend), appar- 

 ently belongs here. There are several specimens in the National 

 Museum from California which are near melampus, but which 

 cannot be determined with certainty. 

 Ogcodes eugonatus 

 Oncodes eugonatus Loew, Centuries, x, p. 236. 



"Black, pile whitish, not sublutescent vestiture. Humeri of same color as 

 rest of thorax. Abdomen with each segment widely bordered white posteri- 

 orly; venter white except black base of first segment, rest of segments with base 

 black, black color, however, suddenly very much dilated toward the abdominal 

 margin. Legs pitchy black; femora toward apex honey-yellow; tibiae above 

 pitchy black, below honey-yellow, apex all yellow; however, apex of first tarsal 

 joint black. Halteres black; tegulae whitish, black margined. Wings 

 pure hyaline, shorter in proportion than in the preceding species, costal and 

 first two longitudinal veins less strong, fuscous bla^k, rest of veins pale." 



Habitat. — ^Texas (Belf rage) . 



I am inclined to believe this to be a color variety of costatus. I 

 have not seen the types of the two species. 



Ogcodes incultus 



Oncodes incultus O. S., Western Diptera, p. 279. 



"Brownish-black; humeral callosities brownish-yellow; antescutellar cal- 

 losities yellowish-brown; posterior margins of abdominal segments white; legs 

 dark brown; knees brownish-yellow; wings strongly tinged with brown. 

 Length, 8 mm. 



"The brownish-black thorax and scutellum are clothed witli a dense, short, 

 yellowish pubescence; abdomen dark brown, segments two and three with nar- 

 rower, four and five with broader, white posterior margins; venter, except the 

 base, white; each segment with a black cross-band on the anterior margin. 

 Tegulae brownish, with narrow dark brown edges. Halteres with a brown knob. 

 Wings comparatively long, strongly and rather uniformly tinged with brown. 



