HARRY SCOTT SMITH. 117 



5. Apical plate obtusely bilobed ; lateral face marks present; mandibles yellow- 



ish-white basally 6. 



Apical plate of various shapes, but not obtusely bilobed 7. 



6. Interval between lobes with a small acute spine; legs dull red, shining. 



rufipes F. Smith. 



Interval between lobes without a spine ; legs not dull red; color a brilliant 



blue-green ; 8 mm. (Cuba) cobsilti iia Ciesson. 



7. Apical plate broad basally, but abruptly narrowed and then prolonged gradu- 



ally into a narrow subacute projection medially 8. 



Apical plate not gradually prolonged into a narrow subacute projection ; some- 

 times there is a small median projection, but the corners of the plate 

 are then sharp, or else the posterior margin forms a double sinus. .10. 



8. Tubercles dark ; median projection of apical plate relatively narrow; central 



arm of clypeal mark much shorter than the lateral ones; hind femora 

 produced beneath to an angle less than a right angle; 4.5-6 mm. (sub- 



maritima Cockerell) acantha Provancher. 



Tubercles light; median projection of apical plate relatively somewhat 

 broader 9. 



9. Occiput closely punctured ; color bluish-green ; hind femora produced into an 



angle greater than a right angle; 4.5 mm. (Southwestern States). 



iianiila Cockerell. 



Occiput more sparsely punctured; color brassy-green; arms of clypeal mark 



about equal ; anterior tibise with a white line extending the entire 



length ; 5-6 mm. (Pennsylvania) metallica n. sp. 



10. Apical plate broad at apex, rounded or subtruucate, never pointed ; mandi- 



bles dark at base 11. 



Apical plate variously shaped, but not rounded or subtruncate at the apex as 

 above ; base of mandibles with a light spot 15. 



11. Tubercles dark 12. 



Tubercles white or cream colored 13. 



12. Abdomen of a coppery hue; head and thoiax bluish-green ; small lateral face 



marks present; wings dark smoky; 7 mm, (Central America). 



abdomiiiaIi!« n. sp. 



Abdomen bluish-green ; lateral face marks absent ; wings subbyaline ; 9 mm. 



(California) tejonensiiii Cresson. 



13. Anterior tibiffi reddish iu front, with a very well-defined light stripe on the 



outer side; 5 mm. (Texas) . . -streiiua F. Smith. 



Anterior tibiae blue-green in front, light stripe on outer side poorly defined, 

 or absent 14. 



14. Face and disk of dorsal abdominal segments closely punctured ; color dark 



bluish-green (United States) dupla Say. 



Face and middle of dorsal abdominal segments more sparsely punctured ; 

 cheeks sparsely punctured ; color light, more yellowish-green (West- 

 ern United States) neomexicaiia Cockerell. 



15. Wing nervures pale brown ; mesothorax finely punctured ; spots on face con- 



flueut with the clypeal marks; 9-10 mm. (Mexico). 



niexicaiia Cresson. 



Wing nervures black ; mesothorax more coarsely punctured ; spots on face not 



confluent with the clypeal marks; 10 mm. (Mex.).. .azteca Cresson 



TRANS. AM. ENT. SOC. X.XXIII. APBIL, 1907. 



