HARRY SCOTT SMITH. 119 



Face with large, widely separated punctures; olive-green; wings sliglitly 

 dusky toward apex ; cheeks almost impunctate ; size smallei', 4-6 mm. 

 (Mexico, Central America) naiitlana Cockerell. 



16. Wings yellowish, nervures almost colorless; head very large; abdomen olive- 



green ; 9-10 mm. (Mexico) capitosa F. Smith. 



Wings either hyaline or smoky, nervures darker 17. 



17. Size very large, 11-13 mm 18. 



Size smaller, 6-9 mm 19. 



18. Color brilliant peacock-green ; head strongly punctured ; dorsal abdominal 



segments margined with black ; length 11 mm. (Panama). 



Isetii, Spinola. 

 Color dark blue ; head finely and very sparsely punctured ; head one and one- 

 half times as wide as thorax ; wings dark smoky ; length 13 mm. 

 (Southern California) gigantea n. sp. 



19. Color bright metallic-green ; wings in fuscated ; head and mesothorax closely 



punctured ; abdomen bluish-green, tip incurved ; 6 mm. (Cuba). 



cyaiiiTeiitris Cresson. 

 Color bluish or bronze-green, not bright metallic as above 20. 



20. Head and thorax dark steel-blue or bluish-green 21. 



Head and thorax greenish, somewhat lighter 22. 



21. Abdomen coppery; wings strongly infuscatcd; checks s])arsely punctured; 



8 mm. (Central America) abtloiuiiialis n. sp. 



Abdomen tinged with olive-green, sometimes golden at apex; 7-9 mm. 

 (Mexico) igiiara ('resson. 



22. Face, abdomen and pleura more closely punctured; wings darker; 8 mm. 



(Mexico) lowiisendi Cockerell. 



Face, abdomen and pleura more sparsely punctured; wings not so dark; 

 5-6 mm. (Western U. S.J. {submaritima Ckll.), acantha Prov. 



Ceratina lunata n. sp. 



% . Length 3 ram. — Shining black, with ivory-white markings. Face smooth 

 and impunctate, or with only an occasional roughening of surface. Clypeus en- 

 tirely ivory-white. Labrum with a large quadrate whitish mark medially and a 

 dark spot laterally. Mandibles dark, rufous medially. Lateral face marks pres- 

 ent, same color as clypeus and extending upward half way to its upper margin. 

 Antennse brown, inserted in broad, deep depressions, the two separated by a 

 strong median ridge which has a single row of punctures on each side. Vertex 

 smooth, occiput with a few punctures, cheeks entirely impunctate. Mesothorax 

 punctured around the edges, impunctate on the disk. Scutellum and postscutel- 

 lum very finely punctured, metathorax extremely so, the upper surface with a 

 median depression. Pleura finely punctured, tubercles entirely white. Abdo- 

 men strongly narrowed basally. First segment impunctate, usually somewhat 

 testaceous, remaining segments finely rugose-punctate, fringed with light hairs. 

 Venter finely punctured, somewhat testaceous. Apical plate crescent shaped. 

 Legs testaceous, anterior femora with a white stripe extending two-thirds of the 

 length, tibiae with stripe running entire length, tarsi yellowish. Posterior tibiae 

 with stripe running about half the length. Middle femora with an obtuse tooth 

 such as is found on the hind femora of other species. Wings hyaline, strongly 

 iridescent, basal part yellowish. 



TEANS. AM. ENT. SOC. XXXIII. APEIL, 1907. 



