SYRPHIDAE. 133 



semicirculns Walker, Dipt. Saund., 249. — Honduras. 

 *seuiciilus Loew, Centur. VI, 63. — Cuba. 

 testaceiconiis Macquart, Dipt. Exot. 4^ Suppl. 138, 62. — Mexico. 

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



Observation. 



Jin'stalis Androdus 'WalTier, List, etc. Ill, 612. — British Possessions. 



En'stalis frattr Walker, List, etc. IH, 614. 



i'listalis chalepus Wallter, Dipt. Saund., '247 ; Canada. 



All tlireo are HdophiU; see the note('^30). 

 En'stalis intersistens Walker, List, etc. Ill, 615; Trenton Falls, seems to 



he Xi/lota badia. 

 Eristalia decisus Walker, List, etc. UI, 604; Trenton Falls, is Helophilus 



shti ill's. 

 Eristalis Eeeres 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 Macquart's are also omitted from the List of described species; 

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

 En'stalis inflatus 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 knovpn species. 



Ptcroptila. 



Loew, Centur. VI, 59, 1865; Plaqiocera Macquart, Dipt. Exot. II, 2, 



59.\'"i). 



acuta Fabricius, Syptem. Antl. 189, 7 (Milesia); Wiedemann, Auss. 

 Zw. II, 110, 8 (id.). — Carolina. 

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

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

 134. — Florida; Georgia; Dallas, Texas; Yucatan (Macq.l. 

 MalJota miles iformis Macquart, Hist. Nat. Dipt. I, 500 [Synonymy 

 by Macquartj. 



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

 Domingo. 

 Syr^jhus pinyuis Fabricius , System. Ent. 763, 6; Ent. System, IV, 

 2ri2, 16; System. Antl. 233, 6 (Eristalis); Wiedemann, Auss. Zw. 

 II, 193, 61 (id). 

 3Iilesia Ania Walker, List, etc. Ill, 564; Macquart, Dipt. Exot. 

 5« Suppl. 94, 9 [I found both of these synonymies in the Berlin 

 Museum]. 

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

 *l)ratoruin Fabricius, System. Ent. 7()5, 13; Ent. System. IV, 286, 31 



(Syrj)lms); System. Antl. 236, 18 (Eristalis). — West Indies. 

 *rnflcnis Wiedemann, Auss. Zw. II, 105, 3 (Milesia). — Cuba. 

 zonata Loew, Centur. VI, 60. — Mexico. 



llclopliilns. 



Meigen, in lUiger's Magaz. II, 1803. (^ss). 



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

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



