334 Mr. F. Walker's Character of undescrihed Dipfera. 



slender; tarsi extremely long, thread-like; wings greyish, with 

 oblong brown spots along the costa, and with an oblong brown 

 spot in the discal areolet ; veins black, strongly marked ; halteres 

 with brownish knobs. 



Length of the body 7 lines; of the wings 18 lines. 

 Mexico. 



Tipula dispellens. 

 Fcem. — Pallide cinerea, capita raaculis duabus fuscescentibus, 

 palpis basi nigricantibus, antennis setaceis breviusculis non 

 pilosis, thorace cervino vittis fnscis, abdomine supra fiisce- 

 scente, pedibus gracillimis pallide testaceis, femoribus fusce- 

 scentibus, tarsis longissimis, alis sub-cinereis, costa venisque 

 fusco-lineatis, halteribus albidis apice fuscis. 

 Female. — Pale cinereous : head with two brownish spots on the 

 vertex ; fore part dark brown beneath ; palpi blackish towards 

 the base ; antennae setaceous, moniliform not pilose, a little longer 

 than the breadth of the head ; thorax fawn colour, with two parallel 

 brown stripes, on each side of which are two brown streaks ; hind 

 part pale cinereous, with three brown stripes; abdomen brownish 

 above; legs pale testaceous, very slender; femora brownish, 

 tarsi very long; wings slightly greyish, brownish along the costa 

 and along the veins, which are dark brown; halteres whitish, with 

 brown knobs. 



Length of the body 7 lines ; of the wings 16 lines. 

 Mexico. 



Genus Pachyriiina, Macq. 



Pachyrhina n'lgrolutea. 

 Mas. — Laete flava, capite macula trigond nigrd vittdqne antica 

 nigricante, antennis nigris basi flavis, thorace vittis tribus 

 latis nigris, pectore maculis variis nigris, abdomine nigro basi 

 subtusque testaceo, pedibus nigricantibus, femoribus flavis, 

 alis sub-cinereis apud costam sub-luridis, stigmate fusco. 

 Tipula nigroluiea? Bellardi, Ditt. Mess. 1, 11, 7. 

 Male. — Bright yellow : head with a large black triangular spot 

 on the vertex ; mouth with a blackish stripe ; antennae black, yel- 

 low at the base; thorax with three broad black stripes; pectus 

 with various black marks ; abdomen black, testaceous at the base 

 and beneath ; legs blackish, very slender ; coxae and femora pale 

 yellow, the latter with black tips ; wings slightly greyish, with a 

 slight lurid tinge along the costa; veins testaceous, black towards 

 the tips; stigma brown; halteres with wliitish lips. 

 Length of the body o lines; of the wings 10 lines. 

 Mexico. 



