and Characters of undescribed Species. 351 



not oblique. Antennse stout, nearly filiform, shorter than the 

 thorax. Thorax with the usual structure, unarmed except a 

 protuberance behind the scutellum. Metathorax largely scabrous. 

 Petiole extremely short. Abdomen oval, acute, narrower but 

 not longer than the thorax. Legs with the usual structure; knees 

 and tips of the tibiae white ; fore-tibiae white above ; hind-femora 

 much incrassated, armed beneath with several minvite teeth. 

 Wings cinereous ; veins black. Fore-wings with a brownish 

 tinge towards the base ; ulna hardly half the length of the 

 humerus ; radius nearly half the length of the ulna ; cubitus 

 extremely short. 



Length of the body 3| lines; of the wings 5 lines. 



Mexico. Discovered by M. Salle. In the British Museum. 



Chalets pendator. 

 Mas. — Nigra, robusta ; caput et thorax sub-punctata ; antennae 

 filiformes, thorace breviores ; thorax callis pallide flavis, 

 scutello inerrai, metathorace scabro ; abdomen ellipticum, 

 breve; pedes feraoribus apice, coxis posticis subtus tarsisque 

 flavis, tibiis flavis nigro fasciatis ; alee cinerese. 



Male. — Black, robust. Head and thorax minutely punctured. 

 Antennae thick, linear, shorter than the thorax. Thorax with the 

 usual structure ; scutellum unarmed ; callus at the base of the 

 fore-wings pale yellow ; metathorax largely scabrous. Petiole 

 extremely short. Abdomen elliptical, a little narrower and much 

 shorter than the thorax. Femora with yellow tips ; hind-coxse 

 yellow beneath ; hind-femora incrassated, armed beneath with 

 several minute teeth ; tibise yellow, with a broad black band ; 

 tarsi yellow ; fore-tarsi tawny. Wings cinereous ; veins black ; 

 ulna hardly half the length of the humerus ; radius shorter than 

 the ulna ; cubitus extremely short. 



Length of the body 3 lines ; of the wings 5 lines. 



St. Domingo. Discovered by Mr. Tweedie. In the British 

 Museum. 



Chalets rest'ituta, 



Foem. — Nigra, crassa; caput et thorax sub-punctata; antennae 

 filiformes, thorace breviores ; thorax callis albis, scutello 

 bidentato, metathorace scabro ; abdomen ellipticum, postice 

 sub-attenuatum, thorace brevius ; pedes rufi, femoribus apice 

 tibiisque basi apiceque flavis ; alae cinereae. 



Female. — Black, thick. Head and thorax minutely punctured. 

 Antennae robust, linear, shorter than the thorax. Thorax with 



