CHRYSOMYIA. 27 



tliiform, broader than the first ; third and following much broader 

 than the second, formiug a globose somewhat compressed flagellum ; 

 seventh extremely minute ; eighth set'iforin, rather hairy at the base, 

 seated near the tip of the flagellum. Thorax obovate, rather long, 

 with a transverse suture. Scutdlum unarmed. Wings long, lanceolate, 

 finely pubescent, incimibent, parallel ; veins indistinct. Alulae small. 

 Halteres large, ovate. Abdomen with 5 segments, large, nearly glo- 

 bular, bare, convex above, flat beneath, broader than the thorax. 

 Legs slender. Male. Eyes contiguous. Tern. Eyes remote. Ocelli 

 more in front of the head than those of the male. 



Tliese flies move slowly, and inhabit flowers, hedges, and 

 thickets, in the summer ; their larvae feed on decayed wood ; one 

 species on that of the elm, 



1. ater, Eb. s. a. 254. 1 (1805); LI.; Pz. ! fu. iv. 5; Mg. ; 



Mq. ; Ztt. — pachygaster. Fin. Niger, aUs albiclis basi nigris, pedibus 

 flavis, femoribus nigris ; Mas. antennis nigris ; Fcem. antennis fulvis. 

 Long. \\ ; alar. 3 hn. 



Black, shining. Proboscis tawny. Wings whitish, tinged with black 

 for half the length from the base ; veins pale yellow. Halteres dark 

 brown. Legs yellow ; femora black. 2Iale. Antenna black. Feni. 

 Antennae tawny. 



Eare. (E.) 



2. Leachii, Ct. ! b. e. 1. 42 {lS2i). —paUipenuis, Mq.; Ztt. Ni- 

 ger, antennis fulvis, alis albis, pedibus flavis, tibiis posticis apice fusco- 

 maculatis. Long. 1^ ; alar. 3 Hu. 



Black, shining. Proboscis and antennae tawny. JFings lohite ; veins 

 and halteres pale yellow. Legs yellow ; a brown spot near the tip of 

 each hind tibia. 



Rare. (E. I.) 



Genus YIIL CHRYSOMYIA. 



CHRYSOMYIA, Mq. d. 1. 262 (1834); Ztt. Musca^., Fb. ; Shr. Ne- 

 motelus p., Deg. Rhagio p., Shr. Sargus p., Fb. ; Mg. ; Fin. ; Ct. 

 Chloromyia, Den. 



Corpus medicB aut minoris magnitudinis, oblongum, parum pubescens. 

 Color metallicus, aureo-viridis. Pictura nulla. Epistoma declive. 

 Ocelli in vertice approximati. Antenna) G-articulatse ; articuli tertius 

 et sequcntes flagellum ellipticura fingentes ; sextus setiformis, termi- 

 nalis. Scutellum inerme. Alarum areola discoidalis veuas 4 obso- 

 letas emittens, vix in summum marginem interiorem extensas. Ab- 

 domen ovale. Mas. Oculi contigui. Foim. OcuU remoti. 



