SYRPHIDAE. 133 



semicirculus Walker, Dipt. Saund., 249. - - Honduras. 

 *seiiiculus Loew, Centnr. VI, 63. - - Cuba. 



testaceicornis Macquart, Dipt. Exot. 4* Suppl. 138, 62. - - Mexico. 

 tricolor Jaennicke, Neue Exot. Dipt. 92. - Mexico. 



Observation. 



Eristalis Androchts Walker, List, etc. Ill, 612. British Possessions. 



Eristalis frattr Walker, List, etc. Ill, 614. 



Eristalis c/ialepus Walker, Dipt. Saund., 247 ; Canada. 



All three are Hdophili ; see the note ( 23U ). 

 Eristalis intersistens Walker, List, etc. Ill, 615; Trenton Falls, seems to 



he Xj/lota badia. 

 Eristalis decisus Walker, List, etc. Ill, 604; Trenton Falls, is Helophilus 



similis. 

 Eristalis Eceres Walker, Dipt. Saund., 246; North America. I could not 



find it in the British Museum, and have for this reason omitted it as 



unrecognizable, from the above list. 



Two species of Hacquart's are also omitted from the List of described species : 

 Eristalis basilaris Macquart, Hist. Nat. Dipt. I, 502, 4. North America. 

 Eristalis injlntus Macquart, 1. c. 507, 18. North America. 

 I did not find the types of these two species, either in Lille, or in Paris and 



the descriptions do not apply to any of the known species. 



Pteroptila. 



Loew, Centur. VI, 59, 1865; I'/nt/i/jirra Macquart, Dipt. Exot. II, 2, 



59.' C 231 ). 



acuta Fabricius, Sy?tem. Antl. 189, 7 (Milesia); Wiedeniann, Auss. 



Zw. II, 110, 8 (id.). -- Carolina. 



*crucigera Wiedemann, Auss. Zw. II, 105, 2 (Miles ia) ; Macquart, 

 Dipt. Exot. II, 2, 60, 1 (Plagiocera), Tab. X, f. 7 ; also 1* Suppl. 

 134. - Florida; Georgia; Dallas, Texas; Yucatan (Macq.). 

 Mallota milesiformis Macquart, Hist. Nat. Dipt. I, 500 [Synonymy 

 by Macquartj. 



cincta Drury, Ins. I, 109; Tab. XLV, f. 6 (Musca). -- Jamaica, San 



Domingo. 

 Syrplius pinguis Fabricius , System. Ent. 763, 6 ; Ent. System, IV, 



282, 16; System. Antl. 233, 6 (Eristalis) ; Wiedemann, Auss. Zw. 



II, 193, 61 (id.). 

 Milesia Ania Walker, List, etc. Ill, 564; Macquart, Dipt. Exot. 



5 e Suppl. 94, 9 [I found botli of these synonymies in the Berlin 



Museum]. 



* decora Loew, Centur. VI, 59. Cuba. 



* pratorum Fabricius, System. Ent. 7(55, 13; Ent. System. IV, 286, 31 



(Syrphus); System. Antl. 23(3, 18 (Eristalis). - - West Indies. 

 *rnflcms Wiedemann, Auss. Zw. II, 105, 3 (Milesia). - - Cuba. 

 zouata Loew, Centur. VI, 60. Mexico. 



Melopliilns. 



Meigen, in llliger's Magaz. II, 1803. ( 2S2 ). 



* clirysostomus Wiedemann, Auss. Zw. II, 174 (Eristalis). Savannah 



(Wied.); New York; White Mts., N. H. 



