382 RHYNCHOPHORA. 
smooth and polished in the 2, the antenne inserted just behind the middle. Prothorax much broader 
than long, transversely convex, rounded at the sides anteriorly, abruptly narrowed in front; sparsely, 
minutely punctate, finely strigose on the outer part of the disc, and with a row of coarser punctures 
along the basal margin. Elytra triangular, depressed at the base, along the suture anteriorly, on the 
middle of the disc, and at the sides below the humeri; sharply, finely striate, the strie distinctly 
punctate, the interstices almost smooth, angularly raised at the apex. Pygidium strongly transverse, 
finely punctate, somewhat concave. Beneath coarsely punctate along the sides, the propleura obliquely 
strigose, the ventral segments sparsely, finely punctate. Prosternum bisulcate anteriorly, the space 
between the sulci flattened and depressed, the broad basal process abruptly declivous in front and in the 
3 transversely tumid. Anterior femora with a broad subtrianguiar tooth, the intermediate pair 
obsoletely dentate. Anterior tibie sinuous, slightly widened in their outer half. Tarsi slender, the 
anterior pair feebly dilated and hairy in the ¢. 
Length 23-4, breadth 14-2 millim. (¢ 9.) 
Hab. GuaTeMALA, Duefias and Calderas on the slope of the Volcan de Fuego 
(Champion). 
One pair, the female much larger than the male. ‘This species has the prosternum 
formed much as in the N.-American J. undulatus (Say) (2), specimens of which 
sometimes have a red prothorax; but the elytra are rapidly narrowed from the base, 
the tarsi are more slender, the anterior femoral tooth is less acute, &c. M. rujicollis, 
Solari, from Peru, is another similarly-coloured form. ‘The form of the prosternal 
process of the male separates M. puniceicollis from most of its allies. 
9. Madarellus rufomaculatus, sp.n. (Tab. XIX. fig. 14, °.) 
Cuneiform, shining, nigro-piceous with a faint brassy lustre, the elytra with a spot on each shoulder, and 
another on the dise towards the apex, rufous, the rufous coloration sometimes extending over the greater 
part of their surface, the legs usually more or less rufescent; the punctures on the under surface and 
legs each bearing an excessively minute whitish scale. Head very sparsely, minutely punctate, 
transversely grooved between the eyes ; rostrum stout, strongly arcuate, a little longer than the head 
and prothorax, closely punctate, the apical portion smoother inthe ¢. Prothorax transversely convex, 
rounded at the sides, abruptly narrowed and tubulate in front, the sides rounded anteriorly ; very 
sparsely, minutely punctate, and with a line of coarser punctures along the basal margin; the lateral 
portions obliquely strigose. Elytra subtriangular, transversely depressed at the base and at the sides 
before and beyond the middle; sharply, finely striate, the interstices smooth and flat. Pygidium densely 
punctate. Beneath closely punctate (the basal process of the prosternum included), the punctures very 
coarse along the sides, the propleura obliquely strigose. Prosternum with two shallow sulci. Legs 
rugosely punctate; anterior femora with a triangular tooth; anterior tibis sinuous, dilated on the 
inner side beyond the middle. 
Length 2-3, breadth 1-13 millim. (¢ 2.) 
Hab. British Honpuras, Belize, Rio Hondo (Blancaneaur); Guatemata, Teleman 
(Champion), Trece Aguas (Schwarz and Barber, in U.S. Nat. Mus.); Panama, David 
(Champion). 
Twelve specimens, varying greatly in size and in the extent of the rufous coloration 
of the elytra, the four red spots are, however, always conspicuous. J. rufomaculatus 
approaches JM. cuneatus, but may be known from it by the more narrowly striate 
elytra, the triangular femoral tooth, and the dense uniform punctuation of the basal 
process of the prosternum. 
