356 Mr. F. Walker's Notes on Chalcidites, 



Mr. Bowring. Aru Island. Discovered by Mr. Wallace. In 

 the British Museum. 



Chalets soc'iator, 



Fcem. — '^vyya, crassa ; caput et thorax punctata, subnitentia ; 



antennae sub-clavatae, thorace breviores ; thorax callis flavis, 



scutello inermi, raetathorace scabro ; abdomen ellipticum, 



thorace paullo brevius ; pedes flavi, coxis femoribusque 



nigris, his apice flavis, tibiis nigro strigatis ; alas cinereae. 



Female. — Black, robust. Head and thorax punctured, slightly 



shining. Antennae stout, sub-clavate, shorter than the thorax. 



Thorax with the usual structure ; scutellum unarmed ; calli at the 



base of the fore-wings pale yellow; metathorax scabrous. Petiole 



extremely short. Abdomen elliptical, a little shorter but hardly 



narrower than the thorax. Legs yellow ; coxae and femora black, 



the latter with yellow tips ; tibiae streaked above with black : 



hind-femora much incrassated, armed beneath with many minute 



teeth. Wings cinereous ; veins black ; ulna about half the length 



of the humerus; radius much less than half the length of the ulna; 



cubitus very short. 



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

 Sarawak, Borneo. Discovered by Mr. Wallace. In the 

 British Museum. 



Chalc'is nitaior. 

 Mas. — Nigra, crassa ; caput et thorax subtilissim^ punctata ; 

 thorax callis flavis, scutello bidentato, metathorace scabro ; 

 abdomen brevissimum, apicem versus rufescens ; pedes flavi, 

 femoribus anterioribus basi femoribusque posticis nigris, his 

 apice flavis ; alae limpidae. 



Male. — Black, thick. Head and thorax very minutely punc- 

 tured. Antennae wanting. Thorax with the usual structure ; 

 scutellum bidentate ; calli at the base of the fore-wings pale 

 yellow; metathorax scabrous. Petiole extremely short. Abdo- 

 men very short, elliptical, very highly arched, dark red towards 

 the tip, much shorter but hardly narrower than the thorax. Legs 

 pale yellow ; anterior femora at the base and coxae black ; hind- 

 femora black, much incrassated, yellow at the tips, armed beneath 

 with minute teeth. Wings limpid ; veins black ; ulna about half 

 the length of the humerus ; radius much shorter than the ulna ; 

 cubitus very short. 



Length of the body 2g lines; of the wings 5 lines. 



North Australia. Discovered by Mr. Elsey. In the British 

 Museum. 



