224 RHYNCHOPHORA. 
ce‘. Body not metallic, polished. 
a’, Legs smooth; elytra with convex interstices and very prominent 
humeri; prosternum bituberculate in ¢: body rufo-testaceous, 
glabrous. . . 1. 6 2 © 0 6 © © © © © 8 #6 
6°. Legs punctured ; elytra with flattened interstices and non- 
prominent humeri: body black, castaneous, or ferruginous, the 
prothorax and elytra sometimes wholly or in part rufous. 
a’. Scutellum squamose on each side; uncus of the anterior and 
intermediate tibie dilatedin @ . ....+24.-. 
6°. Scutellum glabrous; uncus of the tibiz normally formed. 
a’, Elytra without transverse depressions on the disc *. 
a*, Prothorax regularly convex on the disc. 
a’. Body wholly black; prosternum sometimes bispinose in ¢. 
6°. Body black, the prothorax rufous; prosternum unarmed 
mgd... ee ew ew we et we lt le 
6°. Prothorax gibbous on the disc. 
c’. Tarsi narrow ; rostrum shorter and stouter; prosternum 
bispinose, and often with a large deep circular cavity, 
mg... 6 ew ew et ew we wt lt lw ke 
d°’. Tarsi broader; rostrum very long and slender; pro- 
sternum obsoletely bituberculate in ¢ . : : 
6". Elytra with one or two transverse depressions on the disc; 
prothorax regularly convex; prosternum bituberculate or 
unarmed ing. oe ke we et 8 ee 
6°. Tibize subangulate at the base externally ; prothorax regularly convex : 
prothorax and a large humeral patch on the elytra rufescent . 
b*. Anterior femora unarmed, the others unidentate; prothorax gibbous on 
the disc. 
c’. Elytra with transverse depressions : body castaneous or rufous . 
d’, Elytra without transverse depressions: each eltyron with a large 
rufescent humeral patch ee a re 
6’. Mandibles with a sharp tooth at the sides beneath; femora with two 
or more small teeth; prothorax regularly convex ; prosternum unarmed 
in g: elytra wholly or in part rufous or rufo-testaceous 
° e 
1. Diastethus eurhinoides, sp. n. (Tab. XIII. figg. 1, la, 
mediate tibia.) : 
Species 4. 
Species 5. 
Species 6-11. 
Species 12-14. 
Species 15. 
Species 16. 
Species 17-19. 
Species 20.° 
Species 21. 
Species 22. 
Species 23-25. 
2 ; 10, inter- 
Rhomboidal, broad, shining, blue, the scutellum, rostrum, legs, and under surface more or less green ; 
glabrous above, the prosternum, the sides of the metasternum, and the first two ventral segments in 
part, densely clothed with narrow whitish scales. Rostrum long, rather slender, thickened, abruptly 
bent, and punctate at the base, the antenne inserted at about the basal fifth, the club ovate. Prothorax 
very broad, transversely convex, arcuato-explanate at the sides, with minute widely-scattered punctures, 
those on the median lobe coarse, the oblique basal foves rather deep. Scutellum very broad, short. 
Elytra broad, triangular, the suture slightly depressed anteriorly; sharply and finely striate throughout, 
the inner striz faintly, the others distinctly, punctate, the interstices flat. 
Beneath closely punctate, 
* Except in no, 16 (D. gracilirostris), 
