1901.] KATURAL SCIENCES OF PHILADELPHIA. 217 



the base, etc., are as described by Smith, and I have little doul)t 

 that the identification is correct. Smith's description reads as if 

 the thorax were yellow, but of course this was not intended. A 

 different Ceratma, also taken at Chapada (in December), is appar- 

 ently the uudescribed 9 of C. vlridula Sm, It is a brilliant 

 insect, and the face is without light markings. 



Temnosoma metallicum Smith, var. chapadae, n. var. 



9. — Differs from Smith's description of metallicum by the larger 

 size (about 8 J mm.); mandibles green at base; scape green; 

 mesothorax closely and more or less confluently punctured ; wings 

 little iridescent, not noticeably clouded at apex; tarsi practically 

 black, basal joint of hind tarsi green; abdomen with purple reflec- 

 tions, basal margin of second and third segments brilliant purple. 

 Enclosure of metathorax sculptured as Smith describes for 

 metallicuDi. 



<S'. — 1^ mm. long, similar to the ?, abdomen with scarcely any 

 purple. 



Hah. — Chapada, March, d^ and $; also in November. Prob- 

 ably a valid species, but I leave it as a variety until I can com- 

 pare it with authentic material of T. metallicum. 



The following table will facilitate the determination of Tem- 

 nosoma : 



Abdomen impunctate, T. Icevigatwn Sm. 



Abdomen punctate, 1 . 



1. Margin of metathoracic enclosure smooth, T. ceruginosumSm. 

 Margin of metathoracic enclosure transversely striate, , . 2. 



2. Wings smoky (Mexico), T. smaragdinum Sm. 



Wings almost clear (Brazil), 



T. vietallicwn Sm. and var. chapadce Ckll. 



T. smaragdinum occurs as far north as San Rafael, Vera Cruz, 

 Mexico, where Townseud took it at flowers of Cordia, at the end 

 of June. 

 Corynura atromarginata n. sp. 



?. — Length Sh mm., dull from the excessively close punctures; 

 black; lateral projections of prothorax, hind margin of mesothorax 

 very narrowly, postscutellum and metathorax, greenish; sides of 

 basal segment of abdomen and extreme base of second segment 

 also green; clypeus prominent, with rather sparse large punctures 

 on a tessellated surface; mandibles long and dark; antennae dark, 



