360 T. D. A. COCKERELL. 



Augochlora ignita Sm. 



Abdomen strongly punctured. 



Augochlora fulgida Sm. 9- 



Vibrissate, but rather indistinctly; hind spur with numerous long 

 teeth; area small, dull, contrasting with the shining region beyond ; 

 vertex shining purple in some lights. 



Augochlora splendida Sm. 9 <T.). 



Conspicuously vibrissate; hind spur with long spines. 



Augochlora viridula Sm. (T.). 



Considered to be the same as lueidula. Hind and middle tarsi 

 with the first joint light yellow, the others brown. 



Augochlora lueidula Sm. (T.). 



Vibrissate, but the cilia pale and delicate. 



Augochlora lervida Sm. (T.). 



Conspicuously vibrissate, the cilia pale; first r. n. enters base of 

 third s. m. 



The following seven vibrissate species were kindly sent by Mr. 

 Vachal for examination and comparison : 



(a) Abdomen red or reddish. 

 Augochlora seritalis (Halictus seritalis Vachal) 9- 



From this species (1) A. vesta differs by the duller abdomen, all 

 crimson, including first segment, and area quite different; (2) 

 A. ignita differs by its duller, more strongly punctured abdomen, 

 the purple-blue tints on thorax, etc.; (3) A. acidalia differs by being 

 larger, with a strong blue shade on mesothorax. 



Augochlora multiplex (Halictus multiplex Vacbal) 9- 



No blue or purple tints on thorax; first abd. segment largely 

 golden-green. This combination of characters separates it at once 

 from vesta, ignita and acidalia. 



Augochlora radians (Halictus radians Vachal) % . 



The thorax has rather bluish tints. It is like a Mexican vesta, 

 but the middle of mesothorax is more closely punctured (in vesta 

 the punctures are sparser in middle). In vesta the first r. n. meets 

 second t. c, or even enters third s. m. ; in radians the first r. n. 

 enters second s. m. or meets second t. c. (the two sides different in 



