STUDIES IN THE AMERICAN BUPRESTID.E 175 



in the Kerremans Catalogue it appears under the genus Halecia. I 

 will therefore assign our species to the following subgenus of Cinyra: — 



Body slender, the elytra roughly and unevenly sculptured, having large, 

 indefinitely Hmited and feebly depressed areolae of finer closer punctu- 

 ation, the sides posteriorly without trace of serrulation and perfectly 

 even; posterior tarsi with the pads of the first three joints small and 

 depending vertically from the under part of the extreme apices of the 

 joints, the fourth gradually obUque and lamellate under the fifth, 

 impressed along the median part of the surface and evenly sinuato- 

 truncate at tip. [Type Dicerca gracilipes Mels.]. Spectralia n. subgen. 



The type is rather rare and I have in my collection but a single 

 example of the subgenus, which however comes so far from satisfying 

 the original diagnosis of Melsheimer, that it seems necessary to regard 

 it as a different though closely allied species, of which the description 

 appended below is made unusually complete, in order to bring out 

 possible generic as well as specific characters. The head is as wide 

 as the thoracic apex, vertical, the front flat, the epistoma not depressed, 

 deeply and parabolically sinuate at apex, the labrum corneous, sinuate 

 and with an abrupt pale coriaceous margin at apex, the mentum short, 

 wholly corneous and roughly sculptured, truncate and trapezoidal, 

 the palpi slender, the eyes with their inner margins evidently converg- 

 ing upward. The antennae are somewhat as in Buprestis though still 

 more slender and elongate, inserted in small and widely separated 

 foramina, which are concealed from above by the sharply defined and 

 somewhat prominent though porrect frontal margins above them. 

 The prosternum is moderately wide, flat or very feebly convex, having 

 throughout a very fine marginal bead; it is abruptly and obliquely 

 narrowed posteriorly to a rather narrow apex, which does not quite 

 attain the rounded apex of the metasternum in the wide cleft between 

 the lobes of the mesosternum. The first ventral segment is fully as 

 long as the next two combined, with the suture fine but distinct and 

 rectilinear. The descriptions follow: — 



Form slender, subcylindric, dark brassy-brown above; head bright cupreous, 

 roughly chagrined, with a transverse arcuate glossy line between the 

 eyes, which are black-brown; i)rothorax transverse, with the sides 

 rectilinear, the apex truncate and the base bisinuate; surface with an 

 obvious entire furrow, rugosely punctate; scutellum obtuse, triangular; 

 elytra faintly striate, with about four or five longitudinal raised lines, 

 the interstices rugose, punctulate; surface with a distinct cupreous 

 impressed spot a little before the middle and an obsolete double one 



Proc. Wash. Acad. Sci., April, 1909. 



