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



Legs pale yellow ; coxae black. Wings limpid ; veins black, pale 

 yellow towards the base ; ulna a little shorter than the humerus ; 

 radius obsolete. 



Length of the body 2 lines ; of the wings 4 lines. 



Santarem. Discovered by Mr. Bates. In the British Museum. 



Thoracantha rejlexa. 



Fcem. — ^neo-iiigra ; antennae piceae, clavatae, apice rufes- 



centes ; thorax gibbus ; parapsidum suturse distinctse ; 



scutellum sulcatum, quadristriatum, spinis duabus striatis 



arcuatis abdomen paullo superantibus ; petiolus robustus, 



breviusculus ; abdomen breve, altum ; pedes nigri, tibiis 



tarsisque fulvis; alae cinerese. 



Fe?nale. — ^neous-black. Head very short, almost smooth, 



as broad as the thorax. Antennae piceous, clavate, reddish at the 



tips, not more than half the length of the thorax. Thorax 



gibbous. Prothorax extremely short. Scutum with a few 



transverse striae ; parapsides almost smooth, their sutures 



distinct ; scutellum with a furrow in the middle, and with two 



striae on each side, ending in two curved finely striated spines 



which extend a little beyond the tip of the abdomen. Petiole 



stout, rather short. Abdomen smooth, compressed, much higher 



than long, with only one distinct segment, keeled beneath, much 



shorter and narrower than the thorax. Legs black ; tibiae and 



tarsi tawny. Wings cinereous ; veins black ; ulna very much 



shorter than the humerus ; radius less than one-fourth of the 



length of the ulna ; cubitus not so very short as in most species. 



Length of the body 1 ^ line ; of the wings 3 lines. 



Santarem. Discovered by Mr, Bates. In the British Museum. 



Thoracantha Jlavtcornis. 

 Fcem. — Nigra ; antennae flavescentes, sub-clavalae, capitis latitu- 

 dine non longiores ; scutum transverse striatum ; parapsidum 

 suturse indistinctae ; scutellum unisulcatum, spinis duabus 

 latissimis sulcatis sub-arcuatis abdominis apicem fere attin- 

 gentibus ; petiolus robustus, striatus, longiusculus ; abdomen 

 valde compressum, thorace paullo longius ; pedes pallide 

 flavi; alae limpidae. 



Female. — Black. Head very short, very minutely punctured, 

 much narrower than the breadth of the thorax. Antennae yel- 

 lowish, sub-clavate, not longer than the breadth of the head. 

 Thorax gibbous, pubescent. Prothorax extremely short. Scutum 



