82 AMERICAN DIPTERA. 



One male specimen. Johnson : St. Johnsbnry, Vt., June 26th. 

 This species was described from European material ; it has since 

 been reported from Sitka, and White Mountains, New Hampshire. 



Lieria iiiers Meigen. 



Lenjith of body 7 mm. ; of winp: 7 mm. 



G-eneral color black; legs yellow, infiiscated ; hypopygiiim yellow; wings 

 brown veined. 



Front brown, pubescent; the occiput and a narrow area running forward, 

 including the vertical triangle, black; cheeks yellowish-brown, about three- 

 fourths the width of the eye ; antennse. brown, third joint oval, the arista missing 

 in the described specimen ; vibrissse one on each side, long. 



Dorsum of the thorax grayish-black, covered with a yellowish pollen, densely 

 pubescent all over, the small hairs arising from small black dots; scutellum same 

 color as the thorax, entirely bare; pleurae grayish-black; spiracle on the pro- 

 pleural suture conspicuous; a bunch of small black hairs on the niesopleura just 

 above the front coxa, mesopleura otherwise bare. 



Abdomen black, rather densely covered with long black haiis; hypopygium 

 yellow. 



Wings slightly brownish ; wing veins distinctly brown ; spines of the costa ex- 

 ceptionally long and sharp. 



The outside of all the femora black except the ends, which are yellow ; all the 

 tibiee and tarsi yellow; front tarsi flattened and widened from about the end of 

 the second joint ; spurs of the middle tibiae curved. 



One male. Aldrich : Moscow, Idaho. 



A European species hitherto reported from Nortii America but 

 ouce, without locality. 



Iberia pectinata Loew. 



Length of body 4.7 mm. ; of wing 4.4 mm. 



Head yellow; front somewhat saffron-yellow, pubescent; orbits of the eyes 

 whitish ; the occiput, a portion of the vertex surrounding the fronto-orbital bris- 

 tles and the vertical triangle black; antennae reddish-yellow, third joint brown- 

 ish or brownish-black ; ai-ista long and slender, bare ; cheeks about three-fourths 

 the width of the eyes, somewhat clay-yellow ; vibrissfe rather strong. 



Dorsum of the thorax cinereous, rather densely covered with black pubescence ; 

 pleurae entirely gray; propleura with three or four hairs besides the one strong 

 bristle over the fore coxa; mesopleura elitirely bare; pteropleura with a distinct 

 bristle and several hairs (this seems to be one of the best marks of distinction) ; 

 sternopleura covered with dense pubescence, and with one bristle; scutellum 

 bare, yellowish. 



Abdomen cinereous, the posterior n)argins of the segments usually yellowish, 

 sometimes entirely cinereous; hypopygium of the male also yellowisli. 



Wings somewhat brownish, veins entirely brown. 



Legs testaceous; front femora somewhat infuscated ; tarsi brownish ; the front 

 metatarsus in the male with an enlarged lower apical margin, quite distinct 

 when seen from the proper angle. 



