300 Mr. E. Saunders’ Catalogue of Buprestide 
Genus CaToxanTHA, Solier. 
Catoxantha gigantea, Linn. 
Chrysochroa bicolor, C. & G. Monog. Bupr. i. Gen, Chrysochroa, 
p- 3, pl. i. fig. 1. 
Siam. : 
Var. brunnea (Pl. XXI. fig. 1). Differs from the ordinary form 
by having the whole upper surface purplish-brown, except the 
tubercles on the thorax, which are of the ordinary colour; 
and the yellow spots on the elytra are represented by dull-green 
spots 
Siam 
Genus Curysocuroa, Solier. 
Chrysochroa rugicollis, n. sp. (Pl. XXI. fig. 2.) 
C. capite thoraceque igneo-cupreis, rugosis, nitentibus ; elytris 
testaceis, fasciaé cyanea in medio, apiceque ejusdem coloris : 
Subtus cyanea, pubescens, thorace pectorisque lateribus igneo- 
cupreis. 
Head coppery-red, brilliant and rugose; deeply and widely 
furrowed between the eyes. Antenne bluish-black. Thorax 
transverse, trapeziform, brilliant fiery copper, in some lights 
purplish ; anterior margin almost straight, sides slightly in- 
curved, posterior angles largely rounded and somewhat swollen, 
base broadly and deeply lobed ; disk smooth and brilliant, with a 
faint dorsal ridge covered with large irregular punctures, sides 
impressed and very rugose. Elytra yellowish-white, much wider 
than the thorax, about twice as long as broad, with four lon- 
gitudinal ridges; sides slightly swollen beyond the middle, then 
gradually rounded to the apex, which is somewhat truncate, and 
has asmall sutural spine; the margin, the apical third, and an inter- 
rupted band midway between it and the base, forming two somewhat 
triangularly oval spots, the exterior sides of which are prolonged 
so as almost to reach the shoulder, cyaneous. Underside of 
thorax and sides of breast red-copper, pubescent ; abdomen, centre 
of breast and legs blue; centre of abdominal segments green. 
Length 23 lines; breadth 84, 
Laas. 
This species differs from C. Buguetii in having the thorax en- 
tirely rugose and red, instead of the disk being blue and shining, 
as it is in that species, 
