50 HENRY SKINNER, EDITOR. 



three, four and five united, sixth a little longer than fifth. Antennae longer 

 than the head and thorax, the sutures especially at base of flagellum indistinct, 

 joints of flagellum nodose beneath, first joint of flagellum half the length of the 

 second, terminal joint truncate, the end flat and shining. Dorsulum with well 

 marked punctures, closer in front than behind, punctuation of scutellum similar 

 to that of dorsulum, dorsulum with hair of the same kind and color as that on 

 occiput, a fringe of hair bounding the scutellum similar to that on the front. 

 Pleurae sparsely pitted, shining, covered with sparse pale hair. Metathorax above 

 longitudinally striato-punctate, the sides coriaceous, posterior face more shining 

 with a central area. Metathorax covered with sparse pale hairs, the sides almost 

 bare. Wings faintly clouded, transverse median nervure oblique practically 

 interstitial with the basal nervure. First submarginal cell longer than the 

 second. First recurrent nervure received by the second submarginal cell a little 

 beyond the first transverse cubitus, the second recurrent nervure received the 

 same distance before the second transverse cubitus, as the first is received beyond 

 the first. Abdomen smooth and shining, indistinctly punctured, sparsely ciliate, 

 segments two, three, four and five with a sparse fringe of brownish hairs, apical 

 segments more thickly covered with longer brownish hairs. The borders of the 

 segments somewhat testaceous, almost black, highly polished. Last ventral seg- 

 ment flattened not impressed basal ly, apical longitudinal keel abbreviated, almost 

 obscured by the hairs. 



Black. Head, dorsulum, scutellum and pleurae somewhat steel color. 



Type, Coll. Acad. Nat. Sciences Phila. Type locality, Beulah, 

 N. M., August 17, 1901 (H. Skinner). One male specimen. This 

 may prove to be the % of H. tinsleyi Ckll. The antennae put one 

 in mind of the horns of the Oryx, hence the name. Two % . August 

 10-18 (T. D. A. Cockerell). " 



Halictoicles marginal us Cress. 



One ? , August 28, 1899 (W. P. Cockerell). 



Pan u rgi ii ns porlerac Ckll. 



One 9 , July 24 (T. D. A. Cockerell). Both sexes on Helen inm 

 hoopesii Gray, the % I common. June 29, 30, 1902 tViereck ). 



l'aiiurgimis veriis Ckll. 



% . — Length 6.5 mm. — Very similar to the 9 • Yellow, all con- 

 fined to the clypeus, a dot on apex of anterior pair of femora, a stripe 

 on inner side of anterior pair of tibiae and the basal joints of tarsi 

 on four anteior legs yellowish. This is similar to bakeri in having 

 vellow of face, confined to clypeus, but bakeri is a smaller species 

 with punctures on clypeus closer and those on dorsulum finer. 



Three 9 9 . Two others, one August 18th, another at hill above 

 Beulah, August 15, 1900 (T. D. A. and W. P. Cockerell). One 9 



