CHIRONOMUS. 183 



Fern. Pale testaceous, slender. Thorax slightly produced in front. 

 Wings limpid; veins testaceous, distinct. Legs slender. 

 Rare. (E.) 



137. obscurus, F. S. A. 40. 11 (1805); Meig.; Sta3g.; Zett. 

 barbicornis, F. ; Meig. Ater, alls sublacteis, venis albis, halteribus pedi- 

 busque nigris, femoribus pubescentibus validiusculis. Long. 1^-2 ; alar. 

 3-3 lin. 



Deep black. Wings somewhat milky -white ; veins white. Halteres 

 black. Abdomen pubescent. Legs black; femora pubescent, rather 

 stout. Male. AntennaB with black plumes. 



Common. (E.) 



138. permacer, n. Mas et Fcem. niger, gracilis, pectore ventre- 

 que cinereis, alis subcinereis, venis albidis apud costam nigris, metatarso 

 postico tibice posticte bis triente longiore. Long. 2 ; alar. 3-^-4 lin. 



Male and Jem. Black, slender. Pectus and abdomen beneath grey. 

 Wings very slightly greyish ; costal, radial, and cubital veins, and dis- 

 cal transverse veinlet black ; the other veins whitish. Abdomen rather 

 long. Legs long and slender : hind metatarsus more than two-thirds of 

 the length of the hind tibia. 



Not common. (E.) 



139. incallidus, n. Mas, niger, alis subcinereis, venis albidis 

 apud costam nigris, halteribus albis, metatarso postico tibiae postica bis 

 triente breviore. Long. 2i ; alar. 4 lin. 



Male. Black. Antenna with black plumes. Wings very slightly 

 greyish ; costal, radial, and cubital veins, and discal transverse veinlet 

 black, the other veins whitish. Halteres white. Abdomen long, slen- 

 der. Legs long, slender. Nearly allied to C. permacer, but with stouter 

 legs, and the hind metatarsus is less than two-thirds of the length of the 

 hind tibia. 



Not common. (E.) 



140. obsepiens, n. Mas et Fcem. niger, alis sublimpidis, venis 

 albidis, halteribus albis, abdomine nigro-viridi, pedibus sordide albidis. 

 Long. 1 ; alar. 2|- lin. 



Male and Fern. Black. Wings nearly limpid ; veins whitish. Hal- 

 teres white. Abdomen greenish-black. Legs dingy whitish, slender. Male. 

 Abdomen with black plumes. 



Not rare. (E.) 



141. paganicus, n. Fcem. nigro-cinereis, alis subcinereis, venis 

 fuscis, halteribns albidis, pedibus piceis. Long. 1^; alar. 3 lin. 



Fern, greyish-black. Wings greyish ; veins brown. Halteres whitish. 

 Legs piceous, slender. 

 Not common. (E.) 



142. oppertus, n. Mas, niger, validus, alis sublimpidis, venis halte- 



