XIX. OXYBELUS. 111 
The abdomen delicately punctured, pubescent, with an ovate 
transverse yellow spot on each side of the first segment, and a 
transverse yellow line on the sides of the three following ¢. 
I am unacquainted with the ¢. 
In the Cabinet of the British Museum. 
t+) This is an unique specimen. I cannot learn where 
it was taken. 
Sp. 5. arcentatus. Curt. 
niger, argenteo-sericeus, thorace abdomineque flavo maculato, 
pedibus testaceis, mucrone metathoracis acuto 9. 
length 4 lines. 
Curtis, Brit. Entomology, vol. 10. 480. 
Black, entirely covered with a dense silvery pubescence : head 
punctured ; antennz with a fulvous spot at the apex of the first 
joint beneath, as well as the two apical joints entirely ; mandibles 
rufo-piceous. 
Thorax with the tubercles yellow, a yellow transverse plate 
beneath the scutellum, bidentate at its posterior margin; the 
central mucro at the base of the metathorax acute, canaliculated 
above and slightly curved; the scutellum wanting the central 
carina ; the tegule testaceous ; the wings pale, with their nervures 
testaceous ; the legs rufo-testaceous, with the anterior femorz 
entirely, and the intermediate femorz beneath, black; the out- 
side of the anterior tibize, and the knees of the intermediate and 
posterior pairs, yellow. 
The abdomen delicately punctured ; the two first segments with 
a large ovate yellow spot on each side, the three following with 
a yellow band, the first interrupted and the terminal segment 
piceous. 
I am unacquainted with the ¢. 
In the Cabinets of the British Museum 
and of Mr. Matthews, 
