Ill NKW NOnTII AMERICAN ANTHOMYIIDAE (dIPTEKa) 



Tlic Donsola and Dubois specimens were taken liy Mr. C. A. 

 Hart and the wi-iter, mostly from the leaves and stems of trees. 



Helina consimilata sp. ii. 



\falc. — Similar in color to nigribasis. Second antennal joint brown. 

 Differs from the precedins species in having the arista rather shorter haired, 

 fore ti})ia with two slender bristles on posterior surface beyond middle, hind 

 femur with long hairs on entire length of postero-ventral and ventral sur- 

 faces, hind tibia with about eight long slender bristles on antero-ventral 

 surfa(!e, one or two antero-dorsal, and two or three postero-dorsal bristles, 

 and the postero-ventral and ventral surfaces with moderately long erect 

 hairs, excei)t basally. Length, 5.5 mm. 



Tijpe. — d"; New Bedford, Massachusetts, (Housh), [Illinois]. 



Helina spuria sj). n. 



Male and female. — Very similar to nigribasis in color and structure. Dif- 

 fers in both sexes in having the second antennal joint reddish, the cross- 

 veins more distin('tly infuscated, the abdominal spots larger, and in the male 

 the abdomen with a rather indistinct dorso-ccntral vitta. 



Structurally as nigribasis, but the arista with slightly shorter hairs, the 

 lower anterior sternopleural bristle absent, the hind femur has shorter and 

 fewer bristles on the j)ostero-ventral surface, these consisting of two or three 

 short bristles near middle. 



The female has the mid and hind femora entirely i)ale, with a few setulose 

 hairs on the postero-ventral surface of the hind pair. 



Length, 6 mm. 



Type.—d'; Sim Luis Obispo, California, April 24, 1919, (E. P. 

 Van Duzee), [California Academy of Sciences]. Allotype. — 9; 

 topotypical. 



XENOMYDAEA gen. n. 



This genus differs from Aricia in havinji; the thirtl vein with a 

 few sctulae at base, and from Myduea in having the head buccate, 

 very distinctly produced at base of antennae and at vibrissal 

 angle as in figure 29, and the last ventral abdominal segment 

 without sti'ong spines. 



dcnotypc. — Xenomydaea buccala sp. n. 

 Xenomydaea buccata sp. n. 



Male and female.— Bldck, slightly shining, densely brownish gi-ay pruines- 

 cent. Head black, frons, face, parafacials and cheeks with silvery i)ruines- 

 cence; antennae and palju black. Thora.x with four fuscous vittae. Abdo- 

 men witli a very indistinct pair of elongate fuscous spots on each tergite in 

 m:ilc, innuaculate in fenuUe. Legs reddish yellow, femora more or less in- 

 fu.scaled, the fore i)air usually largely so in both sexes. Wings clear. C'alyp- 

 trae and halteres yellow. 



