CHIRONOMU3. 189 



white. Abdomen black; hind borders of the segments grey. Legs 

 Hack ; femora rather thick. 3Iale. Anteunaj with black plumes. 

 Not common. (E.) 



168. tremulus, L. F. S. 1762 (1761) ; F. ; Gmel. ; Meig. ; Mcq. ; 

 Zett. ; Sta^g. Mas et Fcem. flaviis, niteiis, thorace vittis tribus nigris, 

 alls lirapidis, venis albidis apud costam nigricantibus, halteribus albis, 

 abdomine nigro fascia lasali Jlava, pedilnis albis, lemoribus tibiisque 

 apice, tibiis basi tarsisque nigris. Long. 1-1 i; alar. 3-4 lin. 



Male and Fern. Yellow, shining. Thorax with three black stripes. 

 Wings limpid; costal, radial, and cubital veins blackish, the rest whitish. 

 Halteres white. Ahdomen hlacJi, with a ydlow band at the base. Legs 

 white; tarsi, femora, and tibite at the tips and at the base black. Male. 

 Antennas with black plumes. Sutures of the abdominal segments 

 whitish. 



Generally distributed. (E. S. I.) 



169. motitator, L. Fu. Sc. 1760 (1761); F. ; Geoff.; Schr. ; 

 Gmel.; Latr. ; Lam.; Meig.; Mcq.; Gim. ; Zett.; Staeg. ; Eos. — 

 .bicinctm? Meg.; Meig. Zw. i. 41. 48 (1818); Mcq.; Zett.; Gim.— 

 — dizouias, Meig. ; Sta?g. Mas et Fcem. flavus, nitens, thorace vittis 

 tribus nigris, alls limpidis, venis albidis apud costam nigricantibus, 

 halteribus albis, abdomine nigro fasciis duabus Jtavis, pedibus albis, fe- 

 moribus tibiisque apice, tibiis basi tarsisque nigris. Long. 1-li ; alar. 

 3-3i lin. 



3Iale and Fern. Yellow, shining. Thorax with three black stripes. 

 Wings limpid ; costal, radial, and cubital veins blackish, the rest 

 whitish. Halteres white. Abdomen black, with two yellow bands, the 

 first at the base, the second in the middle, occasionally subdivided. Legs 

 white ; tarsi, femora, and til)ine at the tips, and tibia) at the base, black. 

 Male. Antennae with black plumes. 



Generally distributed. (E. S. 1.) 



170. sylvestris, F. E. S. iv. 252. 89 (1792); Meig.; Gim.; 

 Stseg. ; Kos. ; Zett. — vibratorius, Meig. Kl. Zw. — trifascialus ? Panz. ; 

 ]\Ieig. ; Sta^g. ; Gim. ; Zett. — ornatus ?, Meig. ; Stacg. — tricinctus ? 

 Meig.; Mcc|.; Gim.; Stsog. ; Zett. Mas et jFb?;«. flavus, nitens, tho- 

 race vittis tribus latis nigris, alls limpidis, venis albidis apud costam 

 nigricantibus, halteribus pedibusque albis, femoribus tibiisque apice, 

 tibiis basi tarsisque nigris; Mas, abdomine nigro fasciis f lav is ; Fcem. 

 abdomine flavo fasciis nigris. Long. 1-11; «ibi'"- 3-4 lin. 



Male and Fern. Yellow, shining. Thorax with three broad black 

 stripes. Wings limpid ; costal, radial, and cubital veins blackish, the 

 rest whitish. Halteres white. Legs white ; tarsi, femora, and tibioe 

 at the tips, and tibiae at the base, black. Male. Antennae with black 

 plumes. Abdomen with three or more yelloio bands. Fem. Abdomen 

 yelloto, with short black bands. 



Generally distributed. (E. S. I.) 



