118 AMERICAN HYMENOPTEKA. 



SYNOPSIS OF FEMALES. 



1. Black bees with white markings and whitish pubescence ; very small species; 



3-4 mm 2. 



Greenish or blue bees, both large and small species 3. 



2. Scutellum sparsely punctured (Belize, British Honduras). .. .alrala n. sp. 

 Scutellum more closely punctured (Southwestern United States). 



liinata n. sp. 



3. Lateral face marks present -4. 



Lateral face marks absent 9. 



4. Abdomen bright crimson or carmine ; head and thorax brilliant green 5. 



Abdomen bluish or greenish 6. 



5. Legs pale ferruginous; wings subhyaline; size smaller, 8-9 mm. (Panama). 



eximia F. Smith. 

 Legs green ; wings smoky ; size larger, 10.5-11.5 mm. (Mexico). 



aniabilijii Cockerell. 



6. Color extremely brilliant golden-green ; face with a few broad, deep punc- 



tures; clypeus with a slender inverted T-shaped mark, not usually 



found in females; anterior tibite with white stripe extending entire 



length ; 4.5-6 mm. (Belize, British Honduraz). . .auriviridis n. sp. 



Color not as above ; clypeal marks of usual form 7. 



7. Color olive-green ; lateral face marks elongated, i-eaching level of antennae 



(Panama) puuctulata Spinola. 



Dark bronze-green 8. 



8. Size large, 10-11 mm. (Mexico) mexicaiia Cresson. 



Size smaller, 7-8 mm. (Panama) placida F. Smith. 



9. Tubercles white or cream colored 10. 



Tubercles concolorous with rest of thorax 16. 



10. Wings hyaline or smoky, nervnres darker; head very large; abdomen olive- 



green ; 9-10 mm. (Mexico) capifO!sa F. Smith. 



Wings hyaline or smoky, nervures darker; head not unusually large. . . -11. 



11. Wings clear hyaline, strongly iridescent; small species, 3. 5-5. 5 mm. (Texas). 13. 

 Wings more or less smoky ; both large and small species 12. 



12. Size large, 10 mm. ; face and mesothorax anteriorly very sjiarsely punctuied ; 



wings very dark, especially on anterior margin ; pleura with a large 



impunctate area above (Southern California) pacifica n. sp. 



Size smaller, 8 mm. or less; pleura with no impunctate area, or with a very 

 small one 14. 



13. Smaller, color more brass-green; wings very strongly iridescent; punctures 



of face broad .' diodonta n. sp. 



Usually larger, color more bluish-green ; iridescence of wings not so strong; 

 punctures of face smaller iianula Cockerell. 



14. Mesothorax in front sparsely punctured ; wings strongly suffused with brown ; 



abdomen sparsely punctured medially; 7-9 mm. (New Mexico). 



neomexicana Cockerell. 



Mesothorax in front closely punctured ; wings not so dark as above ; abdomen 



more closely punctured medially 15. 



15. Face closely punctured; bluish-green; wings only faintly smoky; cheeks 



more closely punctured ; size larger, 7-8 mm. (U. S.). . . -dupla Say. 



