70 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 65 



The genus is very closely allied to Halecia^ and Kerremans sepa- 

 rates it from that genus by the posterior margin of the hind coxae 

 strongly toothed at the middle, but this character is variable, and in 

 chalcoptera is nearly obsolete. All the species of Hilarotes can be 

 separated from the species of Halecia found in the West Indies, 

 by the lateral margin of the elytra armed with a single strong 

 tooth near the apex. 



KEY TO THE SPECIES 



1. Sides of pronotum nearly parallel posteriorly, not distinctly wider at base 



than at middle ; color above anro-viridis. 



nitidicollis (Castelnau and Gory). 



Sides of pronotum distinctly narrower in front than behind, and widest at 

 base 2. 



2. Pronotum and elytra unicolored, aeneo-viridis_ mannerheimi (Mannerheim). 

 Pronotum and elytra bicolored; pronotum aeneo-viridis, sometimes with a 



bluish reflection; elytra aeneo-cupreous chalcoptera (.Tacquelin Duval). 



HILAROTES NITmiCOLLIS (Castelnau and Gory) 



Halecia nitidicollis Castelnau and Gory, Mon. Bupr., vol. 2, 1838, Buprestis, 



pp. 110-111, pi. 28, fig. 151. 

 Hilarotes nitidicollis Kebremans, Mon. Bupr., vol. 3, 1909, pp. 427-428. 

 Psiloptera aureomieans Nonfried, Deutsch. Entomol. Zeitschr., 1891, p. 272. 



Form broadly elongate and feebly convex; above shining, uni- 

 formly aureo-viridis ; beneath aureo-viridis, with a strong cupreous 

 tinge, tibiae bluish-green, and the tarsi cyaneous. 



Head feebly convex and without depressions on the front, but with 

 a narrow longitudinal groove on the vertex and occiput; surface 

 coarsely and deeply punctate, the punctures irregularly placed and 

 confluent in some areas, the reliefs smooth and somewhat rugose; 

 epistoma transversely truncate in front ; antenna bluish-green. Pro- 

 notum one and one-half times as wide as long, slightly narrower in 

 front than behind, widest near the middle; sides subangularly arcu- 

 ate, obliquely narrowed in front, dilated in front of middle, nearly 

 parallel posteriorly, and sinuate near the posterior angles, which 

 are nearly rectangular, the lateral margins rounded and strongly 

 rugose, with a very short smooth carina at the base ; anterior margin 

 rather deeply arcuately emarginate, with a broadly rounded median 

 lobe ; base feebly sinuate and obtusely angulated at the middle ; disk 

 strongly convex, with a broad longitudinal median sulcus, which is 

 more or less interrupted at the middle and forming a deep fovea 

 in front of the scutellum, and also on each side a short narrow longi- 

 tudinal depression, deeper at the base, and extending to near the 



