120 SYRPHIDAE. 



Chrysotoxnm. 



Illiger's Magaz. II, 1SU3. (»"). 



♦deriTatnm Walker, List, etc. Ill, M2. — IIiuls. B. Terr.; Yukon 

 Eiver, Alaska; Colorado Mts. 

 flayifronsMacquart, Dipt. Exot. II, 2, 17, 2; Tab. Ill, f. 2. — New- 

 foundland. 



*laterale Loew, Ctntur. V, 42. — Nebraska. 



*l)ubesceiis Loew, Wiener Ent. Monatscbr. IV, 83, 10; Centur. V, 43. — 

 Distr. Columbia. 



*Tentricosuiu Loew, Centur. V, 44. — Distr. Columbia. 



nigrita Fabricius, Ent. System. IV, 292, 49 (Syrphus); System. Antl. 

 183, 1 (3Iulio); Wiedemann, Auss. Zw. II, 88, 2. — Jamaica. 



Paragus. 



Latreille, Hist. Nat. Crust, et Ins. XIV, 358; 1804. 



*aiigHstifrons Loew, Centur. IV, 64. — Virginia. 



*bicolor Fabricius, Meigen, etc. — Europe and North America. 



^dimidiatus Loew, Centur. IV, 63. — Distr. Columbia. 



Observation. Paragus transaflanticiis Walker, List, etc. Ill, 

 544, Trenton Falls , is represented in the Brit. Mus. by two spe- 

 cimens, both types; only one of them is a Paragus. 



For Paragus aencus Walker, see Orthoncuva. (*^^). 



Pipiza. 



Fallen, Dipt Suec. Syrphi, 58; 1816. 



buccata Macquart, Dipt. Exot. II, 2, 107; Tab. XVIII, f. 2. — Carolina. 

 *calcarata Loew, Centur. VI, 42. — New York. 

 *fomoralis Loew, Centur. VI, 38. — Illinois. 

 *fcstiva Meigen (or a species closely allied to it~). — Canada. 

 *fraudulenta Loew, Centur. VI, 41. — Illinois. 

 *iiij,'ril)url)a Loew, Centur. VI, 40. — New York. 



radicum Riley, l^t Rep. p. 121, f. 66; Amer. Ent. I, p. 83. — Illinois 

 (apparently the same as flmoralis Loew). 

 *salax Loew, Centur. VI, 39. — Pennsylvania. 



divisa Walker, Trans. Ent. Soc. N. Ser. IV, 156. — Vera Cruz. 



Psilota. 



Meigen, System. Beschr. Ill, 256; 1822. 



flavidlpennis Macquart, Dipt. Exot. 5e Supi)l. 97; Tab. V, f. 5 (com- 

 pare the remark in Loew, Mouogr. I, 27 j. — Philadelphia. 



TrigrlypliMS. 



Loew, Oken's Lis. 1840, 512. 



*modostiis Loew, Centur. IV, 62. — New York. 

 *pabe.rceiis Loew, Centur. lY, 61. — Wisconsin. 



