1S(U.] 33 



24. 0. canadensis, u. sp. 



Male. — Head green, finely and densely punctured, clothed with long 

 white pubescence, which is very dense on the face ; anterior margin of 

 the clypeus smooth, black, with several small indentations and fringed 

 beneath with white pubescence ; antennae rather longer than the head 

 and thorax, black, joints of the flagellum somewhat flattened and con- 

 tracted at base. Thorax green, finely and densely punctured, clothed 

 with long whitish hairs ; tegulae black, shining, slightly tinged with 

 green. Wings subhyaline, apical margins faintly clouded ; nervures 

 blackish. Legs rather long, green, punctured, clothed, especially be- 

 neath, with rather long whitish pubescence ; tarsi beneath with pale 

 fuscous pubescence. Abdomen oval, green, shining, densely and very 

 finely punctured, apical margin of the segments above smooth and 

 shining ; segments above clothed with whitish pubescence, which is 

 long and sparse on the basal and sides of the apical segments and short 

 on the remaining segments ; apical margin of the sixth segment slightly 

 sinuate on each side and rather deeply and obtusely notched in the 

 middle, and that of the apical segment bidentate ; beneath, the ventral 

 segments are flat, densely aud finely punctured, shining and tinged 

 with deep blue. Length 4 lines. 



^a?*.— Canada West. Mr. Wm. Saunders. Coll. Ent. Soc. Philad. 



Differs from 0. proxima, by the shape and greater length of the 

 antennae, by the legs being longer and by the more elongate form of 



the insect. 



25. 0. cognata. n. sp. 



Male. — Head green, very finely and densely punctured ; face thickly 

 clothed with long whitish pubescence, the vertex and cheeks with a 

 thin pubescence of the same color ; anterior margin of the clypeus 

 truncate, minutely denticulated and fringed beneath with white pubes- 

 cence ; antennae as long as the head and thorax, black, joints of the 

 flagellum subdepressed, contracted at base and tinged with rufo-piceous 

 beneath. Thorax dark green, densely and finely punctured, thinly 

 clothed with rather long whitish pubescence ; tegulae black, faintly 

 tinged with green, smooth and shining. Wings subhyaline, nervures 

 blackish. Legs black, tinged with blue and green, sparsely clothed 

 with pale pubescence. Abdomen elongate, subovate, blue slightly 

 tinged with green, shining, densely and minutely punctured, apical 



