NORTH AMERICAN HYMENOPTERA. 221 



Spliiproplithaliiia belloiia Cressou. 



i^emaZe. —Eufo-piceous ; closely and deeply punctured ; head not wider than 

 the thorax, clothed above the autennse with a long, dense, rufo-ferruginous pu- 

 bescence, beneath the antenna? and on the cheeks the pubescence is black and 

 scattered: eyes small, rounded, entire, convex and polished; mandibles black, 

 smooth and polished ; aatennte deep black, the flagellum subsericeous : thorax 

 ovate, slightly narrowed behind, clothed above with a long, dense, rufo-ferrugi- 

 nous pubescence, longer on the summit of the metathorax, which is abruptly 

 truncate behind ; sides of the thorax sparsely clothed with long black pubescence ; 

 beneath, it is more or less mixed with pale yellowish ; legs l)lack, clothed with 

 black pubescence, slightly mixed with pale yellowish, especially on the femora 

 beneath : base of the coxae rufo-piceous ; abdomen ovate, closely punctured, the 

 large basal segment above clothed with a dense rufo-ferruginous pubescence ; the 

 node, the extreme base of the large basal segment and the apical segments above 

 more or less clothed with black pubescence, except the apical margins of all the 

 segments above and beneath, where the pubescence is pale yellowish ; sometimes 

 the pubescence of the third segment above is tinged with reddish ; the node be- 

 neath and the large ventral segment has a scattered, pale yellowish pubescence; 

 the node above is blackish or piceous-black, circular and rugose at tip, and smooth, 

 shining and depressed at base. Length 1.3-15 mm. (Cresson.) 



Hab. — Colorado. 



Allied to ^S'. ca/ifoniica Radosz., but is distinguished by the color 

 of the body being rufo-piceous instead of black, and by the abdomen 

 having only the large basal segment reddish above. 



Spliseroplithalma vertically Smith. 



Female. — Black ; the head broader than the thorax ; the vertex red and clothed 

 with ferruginous pubescence; thorax narrowed jiosteriorly, the sides slightly 

 contracted a little beyond the middle, the lateral margins crenulated ; the meso- 

 thorax has a broad red stipe on each side ; the legs and the thorax beneath thinly 

 covered with pale glittering pubescence; the intermediate and posterior tibife 

 armed exteriorly with a row of sharp spines ; abdomen : the second segment has 

 two small ovate spots at its basal margin and beyond them two large ovate ones 

 almost touching in the centre of the segment ; the four apical segments fringed 

 with long, pale, yellow, glittering pubescence. Length 12 mm. (Smith.) 

 Hab. — Mexico. 



Spha^roplitlialina segina Cresson. 



Female. — Very closely allied to 8. bellona, from which it ditfers only by having 

 the pubescence of the legs and of the abdomen, except on the large basal seg- 

 ment above, entirely deep black, and the segments not fringed with yellowish; 

 the pubescence of the head, thorax and large basal segment of the abdomen 

 above varies to yellowish ferruginous. Length 1.3 mm. (Cresson.) 



Hab. — Colorado. 



SpIiHTophtlialnia eocciiioohirta Blake. 



3Iale. — Black ; head round, not as wide as the thorax, coarsely reticulated, 

 clothed with long, coarse, scarlet pubescence ; antennae black ; eyes round ; tho- 

 rax short, narrowed behind, pro- and mesothorax clothed similar to the head. 



