398 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 95 
rowed to apex; intermediate segments compact, slightly transverse; 
third segment as long as following three segments united. 
Pronotum more than twice as wide as long, distinctly wider at 
apex than at base, widest near apex; sides strongly sinuate, and 
strongly converging posteriorly; posterior angles obtuse; anterior 
margin slightly sinuate, without a distinct median lobe; base triangu- 
larly emarginate on each side, median lobe broadly rounded in front 
of scutellum; disk moderately convex, with a broad, shallow, trans- 
verse depression behind middle; surface finely, densely granulose, 
sparsely, shallowly punctate, rather coarsely reticulate at sides. 
Scutellum small, triangular. 
Elytra at base slightly wider than pronotum near apex; sides parallel 
along basal half, strongly, obliquely converging posteriorly, tips sep- 
arately broadly rounded; lateral margins finely serrate; basal de- 
pressions broad and deep; humeral depressions shallow; surface finely, 
sparsely, shallowly punctate, shghtly rugose basally, the median 
green spot on each side shghtly depressed, without longitudinal 
costae. 
Abdomen beneath glabrous, finely, densely granulose, finely, densely 
punctate, more sparsely punctate on basal sternite; without lateral 
callosities; last visible sternite broadly, arcuately emarginate at 
apex, without a submarginal ridge, lateral margins not serrate. 
Prosternum glabrous, sparsely, coarsely, shallowly punctate; anterior 
margin broadly rounded. Anterior femur with a large, rather acute 
tooth, which is not distinctly dentate on outer margin. Anterior 
tibia strongly arcuate, unarmed at apex; middle and posterior tibiae 
straight. 
Female.—Differs from the male in having the antennae black, the 
head brown in front, becoming reddish cupreous on the vertex and 
occiput, broadly, triangularly depressed on the front, but not deeply, 
transversely depressed on the vertex, and without frontal horns, and 
the last visible abdominal sternite with a short triangular tooth at the 
apex. 
Length 5-5.5 mm., width 2-2.4 mm. 
Type locality—Mundo Nuevo, Trinidad, British West Indies. 
Type, allotype, and paratype—U.S. N. M. No. 56864. Paratypes 
returned to Mr. Callan. 
Remarks.—Described from seven specimens—six males and one 
female (one male type)—collected at the type locality, April 4, 1943, - 
in the cells of a sphecoid wasp (Cerceris sp.) by EK. McC. Callan. | 
This species differs from nearly all the other species of this genus 
in having two distinct horns on the front of the head in the males. | 
It is allied to Chrysobothris cornuta Kerremans but differs from the | 
description given for that species in having the horns on the front | 
of the head of different shape and arising from the inner margins | 
