164 CIIIRONOMID^. 



que toils, necnon ilh'ds posterioribus tarsisque apice fuscescentihus. Long. 

 H ; alar. 4 lin. 



Male. Black. Antennaj with black plumes. Wings limpid -white ; 

 costal, radial, and cubital veins testaceous, the rest white. Halteres 

 pale testaceous. Legs testaceous; femora, fore tiblce, and tips of the 

 tibia; and of the tarsi, brownish. 



Not common. In Mr. Saunders' collection. (E.) 



48. opacus? Meig. Zw. vi. 249. 90 (1830). Mas, ater, alis albo- 

 limpidis, venis halteribusque albis, pedibusfuscis. Long. 1 ; alar. 2 lin. 



Male. Deep black. Antennse with black plumes. Wings limpid- 

 white ; veins and halteres white. Legs brown. 

 Not common. (E.) 



49. albipes? Zett. Dipt. Scand. ix. 3588. 124 (1850). Mas et 

 Foem. niger, antennis basi flavis, alis pubescentibus sublimpidis, venis 

 pedibusque albidis. Long. 2-3 ; alar. 3-4 lin. 



3Iale and Fern. Black. Antennae pale yellow towards the base. 

 Wings nearly limpid, pubescent ; veins whitish. Halteres white. Legs 

 tohitish, slender. Male. Antennte with black plumes. 



Generally distributed. (E. S. I.) 



50. mopertus, n. Mas, niger, alis limpidis, venis albidis apud 

 costani testaceis, abdomine pedibusque sordide viridibus. Long. 2 ; alar. 

 3 lin. 



Male. Black. Antennae with black plumes. Wings limpid ; costal, 

 radial, and cubital veins pale testaceous, the rest whitish. Halteres 

 whitish. Abdomen and legs dull green. 



Not common. (E.) 



51. pedellus, D. G. Ins. vi. 146. 17 (1783); Latr.; Meig.; Mcq.; 

 Zett.; Gim.; StaBg. — fuscus, 1j. — littoralis, Qchv.; Geoff. — cantans,!^.; 

 Meig. Kl. Zw. ILas et Foem. niger, nitidus; ahs albo-limpidis, abdomine 

 viridi apicem versus nigro, pedibus viridibus, femoribus tibiis et tarsormn 

 articulis apice nigris. Long. 3-4 ; alar. 4-5 lin. 



Male and Fern. Black, shining. Wings limpid-white ; veins whitish. 

 Halteres grass -green. Abdomen grass -green, black towards the tip, 

 clothed with white pubescence. Legs pale green ; tips of the femora, 

 of the tibifB, and of the joints of the tarsi, black. Male. Plumes of the 

 antennse brown, white towards the tips ; fore tibiai towards the tips, 

 and fore metatarsi towards the base, black. Fern. Thorax green, with 

 three black stripes. 



Generally distributed. (E. S. I.) 



52. fuscipenms? Meig. Zw. i. 36. 31 (1818).— Var.? Fcem. 

 viridi-niger, nitidus, ahs subfuscis basi limpidis, venis halteribusque 

 albidis, his apice nigricautibus, pedibus testaceis, tibiis apice nigris, 

 femoribus anticis nigro-cinctis. Long. 3 ; alar. 6 lin. 



Var.? Fern. Greenish-black, shining. Palpi and antenuic testaceous. 

 Wings indistinctly tinged with brown, limpid towards the base ; costal, 



