370 RHYNCHOPHORA. 
One male. This species agrees with M. vitiosus in having uneven elytra, but the 
rostrum is very stout, the prothorax is less abruptly constricted in front, and the femora 
are unarmed; and the male has the prosternum transversely tumid behind and broadly 
hollowed thence to the apex, the anterior tibia narrow, and the second joint of the 
anterior tarsi dilated within. 
10. Madarus illustris, sp.n. (Tab. XVIII. figg. 34, 34 4, b, 9.) 
Somewhat fusiform, broad, of a brilliant eneous or cupreo-zeneous colour, glabrous above, the punctures of 
the under surface and legs each bearing a minute, ochreous, hair-like scale. Head closely punctate; 
rostrum arcuate, about as long as the head and prothorax, thickened towards the base, closely punctate, 
the apical half much smoother. Prothorax convex, broader than long, rounded at the sides, constricted 
and much narrowed in front ; sparsely, finely punctate, the flanks obliquely strigose. Hlytra triangular, 
scarcely wider than the prothorax, uneven, transversely depressed below the base; very finely striate, 
the strie distinctly punctate, the interstices with minute scattered punctures, becoming asperate laterally. 
Pygidium large, prominent, densely punctate. Beneath coarsely and rugosely, a broad space down the 
middle of the metasternum and abdomen sparsely and finely, punctate. Prosternum somewhat tumid 
between the coxe posteriorly and with a sharply-defined, shallow, flattened, Y-shaped sulcus on the 
anterior half (fig. 845). Femora suleate beneath, unarmed, 
Length 575-64, breadth 22-3} millim. ( 9.) 
Hab. Mexico, Tehuantepec (Jus. Brit.) ; GuaTemaLa, San Gerénimo (Champion). 
Five specimens, four of which are from Guatemala; these latter were beaten out of 
hedges on the hot arid plain of Salama. Easily recognizable by the brilliant eneous, 
glabrous upper surface, the uneven elytra, and the anteriorly sulcate prosternum. 
11. Madarus scaphiformis, sp.n. (Tab. XVIII. figg. 35, 354, 0, @ .) 
Elongate, somewhat scaphiform, glossy-black, glabrous. Head finely punctate, transversely depressed between 
the eyes; rostrum not longer than the head and prothorax, strongly and abruptly arcuate from the base, 
the basal portion thickened and rather coarsely punctate laterally, the long apical portion flattened and 
almost smooth, the antenne inserted far behind the middle, the antennal club rather small, ovate. 
Prothorax broader than long, gradually narrowing from the base, constricted in front; sparsely, finely 
punctate, the punctures becoming coarser on the flanks. Scutellum small, transverse, triangular. Elytra 
rather elongate, gradually narrowing from near the base, transversely depressed anteriorly, and obliquely 
compressed at the sides below the humeri; very finely lineato-punctate, striate at the sides and apex, 
the interstices abruptly and sharply costate at the apex and each with a line of excessively minute 
punctures extending thence to the base. Pygidium transverse, rugulosely punctate, separated from the 
last dorsal segment by a sinuous ridge. Beneath rather coarsely, the ventral segments finely and 
sparsely, punctate. Prosternum deeply sulcate from the apex to between the anterior coxee, which are 
separated by about their own width, the basal process flattened, broadly truncate behind (fig. 36 6 *). 
Femora feebly clavate, unarmed, the anterior pair shallowly, the others deeply sulcate. Tarsi rather 
slender. 
Length 64, breadth 3 millim. (@.) 
ITab. Costa Rica, Azahar de Cartago (Underwood). 
One female. Easily distinguished by its elongate, scaphiform shape, the apically 
costate elytral interstices, the long, deep, parallel-sided, prosternal sulcus, and the 
deeply sulcate, intermediate and posterior femora. 
* The numbers behind the figures 35 6 and 36} have been transposed on the Plate. 
