112 DOLICHOPODIDAE. 



Observation. Taclujtrcclms moechus and sanus belong to the 

 new genus Macellocerus Mik, Schulprogr. d. Acad. Gymn. in 

 Wien, 1878. — 



About Orthochile derempta Walker, List, etc. see the note (***'). 



Mcrcostomus. 



Loew, Neue Beitr. V, 1857 ; Monogr. II, 116. (i^"). 

 *unicolor Loew, Monogr. II, 117. — Fort Resolution, Huds. B, Terr. 



Dlostracns. 



Loew, Neue Beitr. VIII; 1861; Monogr. II, 120. 

 *prasiims Loew, Neue Beitr. VIII, 44, 1; Monogr. II, 121. — New York. 



Argyra. 



Macquart, Hist. Nat. Dipt. I, 456; 1834; Loew, Monogr. II, 123. 



♦albicans Loew, Neue Beitr. VIII, 45, 1; Monogr. II, 125. — Distr. 



Columbia. 

 *albiYentris Loew, Monogr. II. 128 — Sitka. 

 *calceata Loew, Neue Beitr, VIII, 47, 4; Monogr. II, 131. — Middle 



States. • 



*calcitrans Loew, Neue Beitr. VIII, 46, 3; Monogr. II, 130. — 



New York. 

 *cjiiiidrica Loew, Monogr. II, 132. — Sitka. 

 *inimita Loew, Neue Beitr. VIII, 46, 2; Monogr. II, 129. — Distr. 



Columbia. 

 ♦nigripes Loew, Monogr. II, 127. — Sitka. 



Synarthrus. 



Loew, Neue Beitr. V; 1857; Monogr. II, 134. 



barbatiis Loew, Neue Beitr. VIll, 48, 2; Monogr. II, 138. — Middle 



States. 

 *cinereiveiitris Loew, Neue Beitr. VIII, 48, 1; Monogr. II, 137. — 



Middle States; Texas. 

 ♦palmaris Loew, Monogr. II, 135. — Sitka. 



Rhapliiniii. 



Meigen, Illiger's Magaz. II; 1803; 

 Loew, Neue Beitr. V; Monogr. II, 140. 



*Iugul)re Loew, Neue Beitr. VIII, 49, 1; Monogr. II, 141. — Carolina. 



Porplijrops. 



Meigen, System. Beschr. IV, 45; 1824; Monogr. II, 142. 



*fiiini])oiiius Loew, Neue Beitr. VIII, 51, 3; Monogr. II, 146. — 



Middle States. 

 *loii5ri|>os Loew, Centur. V, 92; Monogr. II, 340. — White Mts. , N. 



II., Canada. 



