6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



arcuate, strongly expanded and flattened toAvard apex, and without 

 any dilatation on the inner margin; middle and posterior pairs sub- 

 cylindrical, the middle pair feebly arcuate, and the posterior pair 

 straight. 



Male . — Unkno wn. 



Length, 9-14 mm. ; width, 4—6 mm. 



Type locality. — Cavinas (Beni River), Bolivia. 



Type and paratypes.—Ci\L No. 26965, U.S.N.M. 



Described from nine specimens, probably all females, collected at 

 the type locality during January and February, 1922. 



CHRYSOBOTHRIS SEXPUNCTATA (Fabricius) 



Buprestis sexpunctata Fabricius, Syst. Eleuth., vol. 2, 1801, p. 206. 



Eighteen specimens collected at Cavinas (Beni River) during 

 January and February, 1922. 



CHRYSOBOTHRIS DECOLORATA (Castelnau and Gory) 



Colobogaster decolorata Castelnau and Gory, Mou. Bupr., vol. 2, 1836, p. 11, 

 pi. 2, fig. 10. 



A single example collected at Cavinas (Beni River) during Janu- 

 ary, 1922. 



CHRYSOBOTHRIS CUPRIFRONS, new species 



Female. — Form narrowly oblong and feebly convex, and with the 

 surface shining ; head reddish-cupreous, w^ith the lateral margins, an- 

 terior margin of epistoma and margins around antennal cavities 

 bright green ; antennae bright green on basal joints, becoming darker 

 green toward the apex; pronotum olive-green, becoming rubinous 

 along the anterior margin; elytra blackish-green, with a strong 

 purplish or reddish-cupreous reflection wdien viewed in different 

 lights, and each elytron ornated with three bright green spots, a 

 narrow oblong one at basal depression, a very narrow oblique one 

 behind humerus, extending forward along the lateral margin, and 

 becoming more or less obsolete around the humeral angle, and a 

 rounded one (emarginated anteriorly and posteriorly) on disk just in 

 front of the middle; beneath olive-green, with strong purplish tinge 

 at the sides, the median parts of a brighter green, with a strong 

 bluish or purplish tinge; tarsi cyaneous. 



Head broadly depressed on the front, which is triangular, the sides 

 strongly obliquely narrowed toward the top, and with two broadly 

 arcuate transverse carinae on the vertex, the anterior one broad and 

 strongly elevated, the posterior one nearly obsolete ; occiput with an 

 obsolete longitudinal carina; surface coarsely and densely punctate, 

 the punctures round, fine, and distinctly separated on the occiput, 



