214 charlj:s a. blake. 



Splisei'oplithaliiia tlietis n. sp. 



Female. — Ferruginous, clothed entirely above with long, coarse, whitish pubes- 

 cence ; head transverse, rounded behind the eyes, slightly wider than the thorax ; 

 autenuffi fuscous, scape clothed with whitish pubescence ; eyes prominent, round ; 

 thorax short, metathorax abruptly truncate, coarsely punctured, deeply excavate 

 at sides ; legs pale ferruginous, thinly clothed with whitish hairs, spines and cal- 

 caria castaneous; basal segment of abdomen campanulate, second closely punc- 

 tured, beneath castaneous ; apical margins of all the ventral segments fringed 

 with white pubescence. Length 7 mm. 



Hab. — Arizona. 



This species is allied to Sackemi Cresson, but may readily be dis- 

 tinguished by the tegument being ferruginous, whereas the former is 

 black, and also by its smaller size. 



S|)h»pro|>lithalina elio Blake. 



Female. —Black ; head round, not as wide as thorax, clothed on vertex with 

 coarse ochraceous pubescence ; eyes round, prominent ; antennae black ; thorax 

 robust, ovate, narrowed posteriorly, clothed on disc with coarse ochraceous pu- 

 bescence, metathorax abruptly truncate, reticulate, flanks impunctate; legs 

 black, having a few scattered, long black hairs, intermediate and posterior tibiae 

 armed with spines, calcaria long ; abdomen ovate, basal half of second .segment 

 black, with coarse black pubescence, apical half and sides of third, fourth and 

 fifth segments clothed with coarse ochraceous pubescence, third and fourth, at 

 middle, and apex black. Length 9.5 mm. (H. Edwards.) 



Hab. — Vancouver's Island. 



Splia^roplttlialiiia inagiia Cre.sson. 



Female. — Dee]) black, coarsely punctured ; head not wider than the thorax, 

 densely clothed with a long, ochraceous-yellow pubescence, rather thin on the 

 cheeks; eyes small, round, entire, convex ; antennee black, the scape with ochra- 

 ceous-yellow pubescence, the flagellum sericeous ; thorax ovate, abrupt on the 

 sides and behind, the upper surface, except of the metathorax, clothed with long, 

 dense, _ coarse, ochraceous-yellow pubescence, which also fringes the ridge, be- 

 tween the two lateral excavations ; metathorax above clothed with long, dense, 

 black pubescence ; legs black ; the coxae beneath, the femora and base of tibiae 

 and the tarsi with black pubescence ; abdomen large, ovate, clothed with a long, 

 dense, coarse, ochraceous-yellow pubescence ; the node and the exti'eme base of 

 the large basal segment clothed with black pubescence ; on the venter the pubes- 

 cence is not so dense. Length 23. .5 mm. (Cresson.) 



Hab. — Cape St. Lucas, Lower California. 



^liphseroplttlMilina holotricha Sauss. 



Female. — Head transverse, rounded, as wide as thorax, densely clothed with 

 ochraceous pubescence; antennae fuscous; eyes round, prominent; thorax elon- 

 gate ovate, narrowed posteriorly; pro- and mesothorax densely clothed with 

 ochraceous pubescence; metathorax rufous, closely punctured; legs fuscous; 

 abdomen ovate, basal segment campanulate, rufous, coarsely punctured ; second 

 segment densely clothed with ochraceous pubescence, apical margins of segments 

 fuscous, fringed with black hair. Length 14 mm. 



Hab. — Mexico. 



