240 lU'LLETIN 31, UNITED STATES NATIONAL MUSEUM. 



Syritta pipiens (Plate XII, figs. 1, la, U, Ic). 



MiiHiU jilpieiiH L.ii)ue, Fauna Siiecica, p. \S2'l, 1761: Selirauk, Emiin. Insect. 



Aiistr., 915. 

 CoHO^'s j>(/)H'Hs Siopoli, Eiitmu. Caruiolica, 969. 

 Syrphus piphiis Fabricius, Spec. Insect., ii, 4154, 65: Entom. Syst., iv, 310, 119; 



Panzer, Fanna Genu., xxxii, 20. 

 Milesia pipienn Fiihricms, Syst. Antl., 194, 27; Fallen, Syrpli., 12, 9. 

 Copriiia pipieii8 Zetterstedt, Ins. Lapp., 584, 45. 

 Xylota pipiens Meigen, Syst. Bescbr., iii, 213, 1. 

 Xi/lola proximn Say. Amer. Ent.. i. ])1. viii : Conipl. Wv., i, 16; Wiedemann, Auss. 



Zw. Ins., ii, 102, 9. 

 SjjrUfa pipieim Maoqnart, Hist. Nat. Dii)t., i, 525, 1 ; Meigen, Syst. Bescbr., vii, 



113, pi. Ixvii, lig. 21; Zctterstedt. Dipt. Scand., ii, 881, 1 ; A'iii, 3193; Scbi- 



ncr. Verb. Zool.-Bot. Gesellseb., vii, 424; Fauna Anstr., i, 357. 



Habitat. — Tbrongiiout the Diiited States!, Europe, Asia, Africa. 



3 9. Lensjtli, 7 to8""". Face and front satiny, yellowish white. Front 

 of female narrow above, shiniiiji- black on upper half with two small 

 polliiiose s{)ots; vertical triangle of male elongate, shiniuj? black, j)olli- 

 nose in front. Antennae reddish yellow. Dorsum of thorax black, 

 bare iu front, with two ai)i)roxima{e poUinose spots; the humeri and 

 behind them, reaching to the suture, yellowish white pollinose. Pleura^ 

 thickly whitish pollinose. Abdomen in the male as follows: Black, 

 tirst three segments opaqne, the fourth and the hypopygium shining: 

 the narrow sides of the ftrst segment, and a broad spot on each side of 

 each of the two following segments, yellow, often whitish pollinose; 

 fourth segment in front with a narrow interrupted yellowish white 

 pollinose cross-band, the hind margin of the segment narrowly j'ellow. 

 In the female the spots smaller, the sides of the third segment in front 

 metallic, scarcely at all yellow, but with a light pollinose spot; other- 

 wise like the male. Four front legs yellowish red, with obscure brown- 

 ish markings; hind femora black, with the base and a usually incom- 

 plete ling near the middle, reddish yellow; hind tibiiie reddish yellow, 

 at the middle and tij) brown or black; hind tarsi reddish yellow, more 

 or less brown on the upper side. Wiugs hyaline. 



The most common species in the family, everywhere and at all times 

 abundant from spring" till autumn. 



ADDITIONAL NORTH AMEPJCAN SPECIES. 

 Xylota Mexicana Bigot, Ann. Soc. Ent. Fr., 1884, 539. — Mexico. 



CHRYSOCHLAMYS.* 



Ferdinnnden ]?ondani, Ann. delle Scienze Nat. di Bologna, 1844. 

 Chrj/sochlamis Rondani in litt. ; \Yalker, Insect Brit.,i, 279, 1851. 



Moderately large species, metallic-golden or bronze-green, with light- 

 colored pollinose stri])es on the dorsum of the thorax. Head hemis- 

 pherical, somewhat broader than the thorax. Antennae short, third 

 Xpvdo?, gold ; ;i;/\«,«t'$, a mantle. 



