54 NOTES ON CHALCIDI*:; 



Male. Black, pilose, rather finely punctured. Antennae filiform, 

 red beneath, a little shorter than the thorax. Metathorax scabrous. 

 Petiole longitudinally furrowed, not more than one-sixth of the length 

 of the abdomen. Abdomen red, smooth, fusiform, as long as the 

 thorax. Hind femora with a large fusiform yellow spot on the outer 

 side, and on the inner side with a very broad yellow stripe which is 

 much narrower towards the tip ; a slender red stripe beneath along 

 the minute black teeth. Wings cinereous, brown towards the base ; 

 veins blackish. Fore wings with the ulna about half the length of 

 the humerus ; radius rather shorter than the ulna ; cubitus less than 

 half the length of the radius ; stigma distinct. Length of the body 

 3£ lines ; of the wings 8 lines. 

 Mexico. In the late Dr. Sichel's collection. 



S. decora. Mas. — Flava; caput nigrum ; antenna? nigra?, articulo 

 lo subtus flavo ; mesothorax macula nigra conica truncata ; scutellum 

 bidentatum, vitta brevi lata nigra; metathorax areolatus ; petiolus 

 longus, gracilis ; abdomen ellipticum, disco apiceque nigris ; coxae 

 posticae longissimae, vitta exteriore nigra ; tibiae posticae nigrae, basi 

 flavae ; tarsi postici pallide rufescentes ; alae anticae cinereae, maximse, 

 fuscescente marginatae, striga subcostali obscure fusca. 



Male. Yellow. Head black. Antennae black, stout, filiform ; 

 scape yellow beneath. Mesothorax with a truncate-conical black 

 spot, which occupies the hind part of the scutum and of the parap- 

 sides ; scutellum with a short broad black stripe, armed with two 

 rather lai'ge teeth. Metathorax divided into distinct compartments 

 by a longitudinal ridge and by three arched transverse ridges. Petiole 

 slender, much longer than the metathorax and not much shorter than 

 the abdomen. Abdomen elliptical, much shorter and narrower than 

 the thorax ; disk above and apical part black. Hind coxae very long, 

 with a black stripe on the outer side ; hind femora armed with ten 

 small and with four very small black teeth ; hind tibiae black except 

 towards the base ; hind tarsi pale reddish. Fore wings very ample, 

 cinereous, especially clouded with brown about the borders and along 

 the costa ; a dark brown streak along the ulna ; veins black ; ulna 

 full half the length of the humerus ; radius as long as the ulna ; 

 cubitus long ; spurious veins very distinct. Length of the body 

 5 lines ; of the wings 1 lines. 



This is a very peculiar form of the genus, and is distinguished by 

 the long petiole, the long hind coxae, the very large wings, and the 

 cubitus, which extends much beyond the stigma. 

 Brazil. 



Erratum. — Page 46, line 5, for cubiculata read scrobiculata. 



