MADARUS. dtl 
12. Madarus vitiosus, sp.n. (Tab. XVIII. figg. 36, 36 a, b, ¢.) 
Broad, subfusiform, very shining, black, glabrous. Head sparsely, finely punctate, transversely grooved 
between the eyes; rostrum strongly arcuate, rather longer than the head and prothorax, stout, gradually 
thickened and closely punctate at the base, for the rest very sparsely, finely punctate, in the @ a little 
longer and smoother, the antenne inserted at (¢) or behind (Q) the middle. Prothorax transverse, 
convex, rounded at the sides, abruptly narrowed and constricted in front, deeply sinuate at the base ; 
very sparsely, minutely punctate, the flanks finely, obliquely strigose. Elytra depressed at the base and 
along the suture, and obliquely compressed at the sides before and beyond the middle, rapidly narrowing 
from the rounded humeri, the subapical callosities prominent; very finely lineato-punctate, striate at the 
sides and apex, the interstices subcostate at the apex and each with a row of excessively minute 
punctures. Pygidium densely punctate, convex in the g. Beneath sparsely, coarsely punctate, the 
abdomen very much smoother. Prosternum sulcate, the sulcus extending backward between the 
cox, widened posteriorly and also in front, the basal process shallowly arcuate-emarginate behind 
(fig. 356). Femora obsoletely dentate, sulcate beneath. Anterior tibiew sinuous, dilated in their apical 
half in both sexes. Anterior tarsi simple in the d. 
Length 51-61, breadth 22-3 millim. (J 2.) 
Hab, Panama, Volcan de Chiriqui 3000 feet (Champion). 
One pair. A moderately elongate, rather broad form, with glistening, uneven, 
obsoletely striate elytra, the subapical callosities of which are prominent, a sulcate 
prosternum, obliquely strigose propleura, and obsoletely dentate, sulcate femora, the 
anterior tarsi not dilated in the male. 
13. Madarus tremulus, sp.n. (Tab. XVIII. figg. 37, 37a, 4, 2.) 
Moderately elongate, subfusiform, glossy-black, glabrous. Head closely punctate, transversely depressed 
between the eyes; rostrum strongly arcuate, a little longer than the head and prothorax, abruptly” 
thickened and closely punctate at the base, the longer apical portion flattened and smooth, the antenne 
inserted far behind the middle, the antennal club ovate and rather small. Prothorax transverse, sub- 
conical, constricted and tubulate in front; finely, somewhat closely punctate, the punctuation becoming 
coarser on the flanks. Elytra rapidly narrowed from the base, uneven, finely punctate-striate, the 
initerstices each with a row of excessively minute punctures, somewhat angulate at the apex. Pygidium 
transverse, rugosely punctate, separated from the last basal segment by a sharp ridge. Beneath coarsely, 
the ventral segments 2-5 finely, punctate. Prosternum sharply sulcate to the apex, the sulcus abruptly 
widened between the coxx, which are separated by about their own width, the basal process hollowed 
in the middle and feebly binodose, arcuate-emarginate behind (fig. 37). Femora unarmed, obsoletely 
 guleate, closely punctate. Anterior tibiz sinuate within. 
Length 6, breadth 24 millim. ( 2.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One female. Less elongate than UM. scaphiformis (which has a similarly sulcate 
prosternum), the rostrum (¢) abruptly thickened at the base, the elytra triangular, 
more uneven, and distinctly striate throughout, the femora obsoletely sulcate, &c. 
14. Madarus astutus, sp.n. (Tab. XVIII. figg. 38, 38 a, 4, 2.) 
Elongate-rhomboidal, very shining, black, glabrous above, the punctures on the greater part of the under 
surface each bearing a minute hair-like scale. Head very finely punctate, transversely depressed between 
the eyes; rostrum about as long as the head and prothorax, arcuate, slender, abruptly thickened, 
gibkous, and closely punctate laterally at the base, smooth and flattened thence to the tip, the antenne 
3 BB 2 
