NORTH AMERICAN HYMENOPTERA. 245 



at middle, prothorax with a small tubercle on each side, metathorax roundly 

 truncate; wings only rudimentary ; legs ca.staneous, thinly clothed with whitish 

 hairs, calcaria white ; abdomen elongate ovate, sessile, stained with castaneous, 

 closely and finely punctured, thinly clothed with silvery hairs. Length 6.5 mm. 

 Female. — Bright ferruginous; head nearly as large in proportion to the thorax 

 as that of the male ; thorax robust, subquadrate. minutely punctured, sides 

 deeply excavate ; legs castaneous, thinly clothed with glittering iiairs. posterior 

 tibiae armed with spines ; abdomen above stained with castaneous, thinly clothed 

 with silvery i)ubescence. Length 5.5 mm. 



Hab. — ^Texas. Two specimens ( S $ ). 



A very curious little species ; in structure allied to Idtieeps Blake. 



Sphierophthalina xalapa Blake. 



Male. — Black; head rounded, thinly clothed with erect pale hairs; autenme 

 black ; eyes round, prominent ; thorax elongate ovate, pi-othorax rounded in 

 front, finely punctured, posterior margin carinate, bearing a few erect, pale hairs ; 

 mesothorax finely punctured ; metathorax roundly truncate ; coarsely reticulate ; 

 wings pale fuliginous, paler towards the base ; marginal cell ovate, roundly trun- 

 cate at tip, second submarginal receiving the recurrent nervure a little beyond 

 the middle, a faint hyaline streak running through the first and .second submar- 

 ginal cells ; tegulse round, finely punctured ; legs black, clothed with pale glit- 

 tering hairs, calcaria white ; alidomen elongate ovate, .shining, finely punctured, 

 apical margins of all the segments ciliated with silvery pubescence ; under side 

 of entirt, insect sprinkled with pale hairs. Length 9 mm. ; expanse of wings 

 15 mm. 



Hab. — Mexico. Prof. F. Suniichrast. 



Sphteroplithalma zapoteoa Blake. 



Male. — Black ; head subquadrate, posterior angles rounded, closely punctured, 

 thinly clothed with yellowish white hairs; antennae black; eyes moderate, con- 

 vex, rounded ; mesothorax elevated, coarsely punctured ; metathorax rounded 

 and posteriorly truncate, coarsely punctured ; wings subhyaline, with an irides- 

 cent lustre, marginal cell moderately long, rounded at tip, three submarginal 

 cells, first about as large as the marginal, the second subtriangular, receiving the 

 first recurrent nervui-e about the middle, the third obsoletely defined and not 

 extending beyond the marginal; legs black, tibiae clothed with long, pale, glit- 

 tering hairs ; abdomen ovate, basal segment subsessile with the second, both of 

 which are polished, moderately punctured and thinly clothed with erect, pale 

 golden yellow hairs ; apical segments clothed with dense, pale golden pubescence. 

 Length 7 mm. ; expanse of wings 11 mm. 



Hab. — Mexico. Prof. F. Suniichrast. 



iSpha^rophthalina gila Blake. 



Male. — Black ; entire insect closely punctured ; head subquadrate, posterior 

 angles rounded ; mouth clothed with pale pubescence ; eyes round : thorax elon- 

 gate ovate, metathorax roundly truncate, finely reticulate ; wings ample, hyaline, 

 iridescent, marginal cell elongate ovate, pointed to tip, fir.st submarginal nearly 

 as long as the marg'inal, second subtriangular, pointed towards base, receiving 

 the recurrent nervure before the middle; nervu res fuscous; legs black, thinly 



