CHALCIDIDiE. 53 



S. conjungens. Mas. — Flava ; caput fascia abbreviata, maculi9 

 duabus margineque postico nigris ; antennae fuscse, subtus luteae ; 

 prothorax fascia abbreviata strigisque duabus posterioribus transversis 

 nigris : mesothoracis scutum vittis tribus nigris postice connexis, 

 scutellum strigis duabus obliquis vittaque fusifornii nigris ; meta- 

 thorax fascia antica abbreviata, macula furcata, lateribus margineque 

 postico nigris ; pectus fasciis duabus arcuatis nigris ; petiolus longus, 

 apicem versus niger ; abdomen fusiforme, strigis duabus latis 

 basalibus fasciisque quatuor nigris ; coxae posticae nigro univittatae ; 

 femora postica striga exteriore brevi obliqua vittisque duabus 

 interioribus nigris; tibiae vitta abbreviata nigra; alee cinereae, apud 

 costam lutescentes. 



Male. Yellow, pilose, roughly punctured. Head with the hind 

 part, two dots including the two hind ocelli, and an abbreviated band 

 including the fore oeellus, black. Antennae brown, filiform, luteous 

 beneath, not longer than the thorax. Prothorax with a transverse 

 black streak on each side and with an anterior abbreviated black band, 

 which is attenuated on each side. Scutum of the mesothorax with 

 three black stripes which are connected on the hind border, the 

 middle one dilated in front ; scutellum with an oblique black streak 

 on each side, and with a fusiform black stripe which is much dilated 

 at the hind end. Metathorax with a short black band in front, with 

 a forked black spot in the disk, and with a black border on each side 

 and behind. Pectus with two curved black bands, the anterior one 

 much dilated in the disk. Petiole cylindrical, black towards the tip, 

 nearly one-third of the length of the abdomen. Abdomen fusiform, 

 smooth, shorter than the thorax, with a broad black streak on each 

 side at the base, and with four black bands. Hind coxae with a black 

 stripe. Hind femora on the inner side with two black stripes, the 

 upper stripe emitting two recurrent black streaks ; outer side with a 

 short oblique black streak ; teeth black, minute. Hind tibiae with a 

 black stripe, which does not extend to the tip. Wings cinereous, 

 with a luteous tinge along the costa ; veins brown. Fore wings with 

 the ulna less than half the length of the humerus ; radius nearly as 

 long as the ulna ; cubitus clavate, much less than half the length of 

 the radius. Length of the body 4£ lines ; of the wings 10 lines. 



Most allied to S. sordida, from which the bands of the abdomen 

 and the marks on the hind femora sufficiently distinguish it. 



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



S. pompiloides. Mas. — Nigra; antennae subtus rufae; petiolus 

 sulcatus, brevis ; abdomen rufum, fusiforme ; femora postica macula 

 exteriore magna fusiformi vittaque latissima iuteriore flavis, vitta 

 inferiore tenui rufa ; alae cinereae, basi fuscae. 



