NORTH AMERICAN HYMENOPTERA. 251 



Splia^rophtlialiiia izncar Blake. 



Female. — Head and thorax ferruginous, the former quadrate, posterior angles 

 acute, wider than the thorax, finely reticulate ; scape of antennae and mandibles 

 rufous, tips of the latter black ; eyes round ; thorax short, subquadrate, rounded 

 in front, slightly constricted at the sides, which are finely dentate, metathorax 

 abruiitly truncate, coarsely reticulate ; legs rufo-testaceous, with a few glittering 

 hairs, intermediate and posterior tibiae armed with spines, calcaria white ; ab- 

 domen ovate, second segment with a broad band of pale golden pile on the apical 

 margin, having a semicircular notch on its anterior edge, apical segments fringed 

 with pale golden pubescence ; under side dark rufous, inclining to black at the 

 base. Length (3.5 mm. 



Hab. — Mexico. Prof. F. Sumichrast. 



Spliserophtlialina cliiapa Blake. 



Female. — Head and thorax ferruginous, closely and finely punctured, the former 

 quadrate, posterior angles acute, wider than the thorax ; antennae : 

 scape and first joint of fiagellum rufous, mandibles black at tips ; eyes 

 round, polished ; thorax short, subquadrate, rounded in front, slightly 

 constricted at sides, metathorax abruptly truncate ; legs pale rufous, 

 thinly clothed with whitish hairs, intermediate and posterior tibiae 

 armed with long spines, calcaria pale ; abdomen ovate, black ; apical 

 margin of basal segment fringed with pale golden pubescence, second 

 segment having a l»nate band of pale golden pubescence, connected 

 with the anterior margin by two longitudinal lines of the same ; apical 



segments fringed with pale golden pubescence ; ventral segments same as above. 



Length 7 mm. 



Hab. — Mexico. Prof. F. Sumichrast. 



Sphseroptithalina criieiata Smith. 



Female. — Head and thorax ferruginous, the former quadrate, the posterior 



angles acute ; the cheeks produced into an obtuse spine ; the posterior 



1^ ^ margin of the vertex and the sides of the head fuscous; the vertex 



?=^ more or less adorned with silvery pile; the antennae rufo-fuscous ; 



\^/ thorax fiddle-shaped, the lateral margins denticulate ; legs rufo-testa- 



/^ ceous, differing in depth of coloring ; abdomen : the base more or less 

 fl ■ rufo-testaceous, a central narrow line of silvery pubescence runs from 

 W-ly base to apex, a transverse fascia crosses the second segment a little 



\-^' within the apical margin. Length 6.5 mm. 



Hab. — Brazil (Para), Mexico. 

 The specimens from Mexico have the central and transverse lines 

 of pale golden pubescence. 



Splijerophtlialina salutatrix: Smith. 



Female. — Black, with the thorax and legs ferruginous, the antennae and man- 

 dibles obscurely so ; head much wider than the thorax, subquadrate, the posterior 

 angles acute, with golden yellow pubescence above and a black, semicircular spot 

 on the vertex anteriorly ; thorax narrowed behind, constricted about the middle, 

 the margins with a series of compressed teeth, closely and strongly punctured 

 above; abdomen, with the margin of the first segment, a triangular spot at the 



