152 



of this rare and noble species, the latter of which was before un- 

 known, together with both sexes of another scarcely inferior to it 

 in size and beauty; and at the request of Dr. S., he had prepared 

 descriptions of them. They both belong to the sub-genus Mecy- 

 norhina of Hope. 



M. Polyphemus. Opaque, velvet green, above ; top of the head, 

 five longitudinal stripes on the thorax, three rows of rounded spots 

 on each elytron, a spot on the scutel, two large square spots on 

 the podex, and the sides of the breast, pale buff-colored ; margin of 

 the clypeus, horn, antennae, and tarsi, black. 



Male. — Head, three-horned ; the anterior horn curved upwards, 

 forked, and denticulated at the end ; the lateral horns elevated per- 

 pendicularly, compressed and denticulated. Intermediate stripe on 

 the thorax abbreviated behind, anterior femora six-toothed inter- 

 nally, and notched at the base. Body beneath, except the sternum 

 and abdomen, covered with a yellowish, velvet-like pile. Length, 

 exclusive of the horns, 2J inches; central horn, f of an inch, or 

 more. 



Female. — Clypeus narrowed before, and widely emarginated on 

 the anterior edge. Thorax grossly punctured ; the intermediate 

 vitta obsolete. Body beneath entirely green, polished, grossly 

 punctured, and scarcely clothed with tawny hairs. Length, 2^- 

 inches. 



M. Savagii. Thorax opaque velvet-green above, with five broad 

 yellowish stripes ; scutel green, with a broad ) r ellowish stripe in the 

 middle ; elytra velvet-black, with three rows of tawny spots on each 

 elytron, and an indented stripe of the same color on the suture, the 

 marginal and subsutural spots confluent from the base to the mid- 

 dle ; head of the male and central horn above, two spots on the 

 vertex of the female, two square spots on the podex, and sides of 

 the breast, yellowish gray ; sternum, abdomen, and legs, dark 

 green, and polished ; horns and margin of the clypeus, anterior 

 and intermediate tarsi, black ; posterior tarsi pale rufous, with the 

 articulations and claws black. 



Male. — Head three horned ; the anterior horn horizontally ex- 

 tended, and forked at the end ; lateral horns smooth and tapering, 

 extended forwards and outwards ; anterior femora with three une- 

 qual robust teeth on each side, those on the outer edge abruptly 

 bent downwards. Length nearly 2 inches ; horn more than half 

 an inch. 



