188 CHIRONOMID*:. 



Abdomen black, cinereous beneath. Legs tawny , long, slender ; tarsi and 

 tips of tJte tibia: black. 

 Rare. (E.) 



163. obtexens, n. Fcem. canus, thorace vittis tribus nigris, alia 

 cinereis, venis halteribusque albidis, Hits apud costam nigris, abd< 

 cinereo subtus testaceo, segmentorum marginibus posticis albidis, pedibus 

 nifjro-fuscis. Long. 2; alar. 7 lin. 



Fern. Hoary. Thorax with three black stripes. Wings long, grey ; 

 costal, radial, and cubital veins, and discal transverse veinlet black, 

 the rest whitish. Halteres whitish. Abdomen cinereous, testaceous be- 

 neath ; hind borders of the segments whitish. Legs blackish-brown, long, 

 slender. 



Not common. (E.) 



164. deproperans, n. Foem. cauus, thorace vittis tribus nigris, 

 alis subcinereis, venis pallide fuscis apud costam obscurioribus, halteribus 

 albidis, abdomine nigro subtus fuscescente, segmentisjlavo-fasciatis, pedibus 

 nigris. Long. I!; alar. 3 lin. 



Fern. Black. Thorax hoary, with three black stripes. Wings grey- 

 ish ; costal, radial, and cubital veins, and discal transverse veinlet dark 

 brown, the other veins pale brown. Halteres whitish. Abdomen brownish 

 beneath ; a yellow band on the hind border of each segment. Legs black, 

 stout. 



Not common. (E.) 



165. obsistens, n. Mas, canus, thorace vittis tribus vix con- 

 spicuis nigris, alts subcinereis, venis fuscescentibus apud costam nigris, 

 halteribus albidis, pedibus validis. Long. 1|- ; alar. 3 lin. 



Male. Black. Antenna? with black plumes. Thorax hoary, with 

 three indistinct black stripes. Wings greyish ; costal, radial, and cu- 

 bital veins black, the other veins brownish. Halteres whitish. Legs 

 stout, moderately long. 



Not common. (E.) 



166. pertractus, n. Mas, canus, thorace vittis tribus nigris, alis 

 cinereis, venis albidis, halteribus albis, abdomine nigro-cinereo suturis 

 albidis, pedibus piceis attenuatis. Long. 2^ ; alar. 4 b'n. 



Male. Hoary, slender. Thorax with three black stripes. Jl'inga 

 grey ; veins whitish. Halteres white. Abdomen cinereous-black ; sutures 

 whitish. Legs piceous, rather long and slender. 



Not common. (E.) 



167. moturus, n. Mas et Fcem. ciuereus, thorace vittis tribus 

 nigris, alis sublimpidis, venis albidis apud costam testaceis, halteribus 

 albis, abdomine nigro, segmentorum marginibus posticis cinereis, jn-di- 

 bus nigris, femoribus validiusculis. Long. If ; alar. 3 lin. 



Grey. Thorax with three black stripes. Wings nearly limpid ; cos- 

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



