166 chironomidjE. 



thorax black. Wings limpid ; costal, radial, and cubital veins pale green, 

 the rest white. Halteres white. Abdomen pubescent. Legs pale green, 

 pubescent ; tips of the femora, of the tibiae and of the tarsi, brown. 

 Not common. (E.) 



58. tentans, P. S. A. 38. 3 (1805) ; Meig. ; Mcq. ; Gim. ; Stteg. ; 

 Zett. — vernalls, Meig. Kl. Z\v. Mas et Fcem, viridis, thorace vittis 

 tribus nigris, alis albo-limpidis, venis albis apud costam testaceis, venula 

 transversa nigra, abdominis segmeniis nigro-fasciatis, tibiis et tarsorum 

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



3Iale and Fern. Oreen. Thorax with three blacTc stripes, the middle one 

 subdivided. Wings limpid-tohtte ; costal, radial, and cubital veins testa- 

 ceous, the rest white ; discal transverse veinlet black. Abdominal seg- 

 ments loith black bands, which vary in breadth, and occasionally in the 

 middle extend to the hind border, leaving a green spot on each side. 

 Legs pale green ; tips of the tibiae and of the joints of the tarsi black. 

 Male. Antennse with brown plumes. Fem. AutenuEe testaceous, black 

 towards the tips. 



Generally distributed. (E. S. I.) 



59. pallens, Meig. Zw. i. 22. 5 (1818); Meg.; Gim. ; Sta;g. ; 

 Zett. Mas et Foem. niger, thorace vittis tribus nigricantibus, alis sub- 

 limpidis, venis albidis apud costam testaceis, venula transversa riigricante, 

 segmentorum abdominalium marginibus posticis cano-viridibus, pedibus 

 testaceis, tibiis et tarsorum articulis apice nigris; Mas, thorace cano ; 

 Foem. thorace viridi. Long. 3-3i ; alar. 4|- lin. 



Male and Fem. Black. Thorax with three blackish stripes. Wings 

 nearly limpid; costal, radial, and cubital veins testaceous, the rest whitish ; 

 discal transverse veinlet blackish. Halteres green. Abdomen with a 

 hoary-green band on the hind border of each segment. Legs testaceous ; 

 tips of the tibia3 and of the joints of the tarsi black. Male. Antenufe 

 with blackish plumes. Thorax hoary. Fern. Thorax green. 



Generally distributed. (E. S. I.) 



60. riparius, Meig. Zw. i. 23. 6 (1818); Mcq.; Gim.; Stteg. ; 

 Zett. Mas et Foem. nigricans, thorace viridi vittis tribus nigricantibus, 

 alis albo-limpidis, venis albidis apud costam testaceis, venula transversa 

 nigra, segme)dorum abdominalium marginibus posticis viridibus, pedibus 

 viridibus, tibiis et tarsorum articulis apice nigris. Long. 3-3-}; alar. 

 4i lin. 



Male and Fem. Blackish. Thorax green above, with three blackish 

 stripes, the middle one subdivided. Wings limpid-white ; costal, radial, 

 and cubital veins testaceous, the rest whitish; discal transverse veinlet 

 black. Halteres green. Abdomen ivilh a green band on the hind border 

 of each segment. Legs green ; tips of the tibia;, of the joints of the 

 tarsi, and of the fore femora, black. 



This may be a variety of the preceding species. Generally dis- 

 tributed. (E. S. I.) 



