62 PROCEEDINGS OF THE NATIONAL MUSEUM vol.65 



insertion of the antennae; epistoma rather elongate and broadly 

 emarginate in front; antennal cavities small, rounded, and situated 

 a short distance from the inner margin of the eyes. Antennae short 

 and robust; first joint rather short and enlarged at apex; second very 

 short and obconical ; third triangular and as long as the first ; fourth 

 to tenth triangular (outer joints wider than long), strongly dentate 

 on the inner side, and armed with poriferous pores (which are more 

 or less pubescent) on both sides of the joints; the eleventh joint 

 emarginate at the apex. Eyes large, elliptical, strongly convex, 

 and much closer to each other on the vertex than at the front. Pro- 

 notum wider than long, regularly convex, and without a median 

 carina or sulcus. Scutellum small, suboval, and narrower in front 

 than behind. Elytra elongate, strongly attenuate posteriorly; base 

 sinuate and the lateral margins entire. Sternal cavity formed by the 

 mesosternum and metasternum; mesosternum divided, the laterax 

 branches long and feeblj^ oblique; metasternum truncate in front, 

 with a feeble arcuate emargination at the middle, and the surface 

 broadly concave. Prosternum wide, strongly convex, with the an- 

 terior margin arcuately emarginate at middle; prosternal process 

 broad, broadly flattened, with the sides declivous. Posterior coxae 

 strongly dilated internally ; anterior margin sinuate ; posterior mar- 

 gin strongly oblique. Legs robust; femora subc3dindrical, flattened, 

 and feebly swollen at middle; tibiae cylindrical, feebly expanded at 

 apex ; tarsi depressed and rather broad, the first joint of the posterior 

 pair a little longer than the following joint. Body elongate, very 

 robust and rather strongly attenuate posteriorly. 



This genus includes some of the largest Buprestids, and is very 

 common throughout the Neotropical Region. Only one species is 

 recognized, which is separated into a number of varieties according 

 to the color and geographical distribution. 



EUCHKOMA GIGANTEA, var. HARPERI Sharp 



Euchroma (fit/anten, var. harpcri Sharp, Trans. Ent. Soc. London, 1881, 

 pp. 289. 293-294.— KEUKEAtANs, Mon. Bupr., vol. 3, 1908, p. 249. 



Euchi-oma gignntea Fleutiaux and SALi.fi, Ann. Soc. Ent. France, ser. 6, 

 vol. 9. 1890, p. 405 (separates p. 55). 



Male. — Form very large, robust, and moderately convex; above 

 dark purplish-black to dark green, according to the direction in 

 which the specimen is viewed; pronotum without discal spaces; be- 

 neath of the same color as above. 



Head feebly convex; front with a broad, shallow longitudinal 

 groove, which is interrupted on the vertex; occiput narrowly longi- 

 tudinally sulcate, the sulcus terminating in a rather deep fovea on 

 the top of the vertex ; surface sparsely and finely punctate, the punc- 



