MADAROPSIS.—SPHENOBARIS. 401 
MADAROPSIS, gen. nov. 
Mandibles short, notched within, decussate; rostrum stout, strongly arcuate, moderately long, the scrobes 
running along the lower face, the antenne inserted beyond or near the middle, the antennul club stout, 
ovate; prothorax constricted in front, moderately sinuate at the base; scutellum small, free, oblong ; 
elytra elongate-subtriangular, slightly wider than the prothorax, produced and separately rounded at the 
apex, the humeri rounded, leaving the upper portion of the mesothoraciec epimera exposed ; pygidium 
prominent, transverse; prosternum (fig. 64) narrowly sulcate from the apex to as far as the middle of 
the anterior coxe, the sulcus widening anteriorly and limited on each side in front by a short oblique 
ridge, the basal process short and depressed; meso- and metasternum connate, the mesosternum 
depressed and broadly exposed; anterior coxe separated by about their own width; legs moderately 
elongate ; femora unarmed, the anterior pair subclavate, the others sulcate beneath; tibiee and tarsi 
rather slender, the tibie strongly unguiculate, the tarsal claws long and divergent; body elongate, 
subfusiform, squamose. 
Type, M. suleipectus. 
The insect forming the type of this genus superficially resembles certain members of 
the genus Madarus (M. fusiformis and M. ochreoguttatus), but the structure of the 
pro- and mesosternum is wholly different, and the two genera cannot even be placed 
in the same section of the Barina. 
1. Madaropsis sulcipectus, sp.n. (lab. XX. fige. 6, 6a, 4, 3.) 
Shining, eneo-piceous; sparsely clothed with coarse, narrow, elongate, adpressed ochreous scales, those on 
the elytra here and there clustered into dense fascicles, the legs with small hair-like scales. Head finely 
punctate; rostrum about as long as the head and prothorax, closely punctate, the antenne inserted at 
the apical third (¢) or near the middle (@). Prothorax transverse, the sides rounded anteriorly and 
parallel behind; closely and rather coarsely punctate, except along the irregular narrow smooth median 
space: Elytra flattened on the dise anteriorly, rapidly narrowed in their apical fourth ; finely striate, 
the strie with scattered fine punctures, the interstices flat to near the apex, sparsely, finely, irregularly 
punctate. Pygidium (¢) convex, shining, and densely punctate, ( 2 ) shorter, flatter, rugosely punctate, 
and raised along the middle. Beneath coarsely and closely, the ventral segments very sparsely and 
finely, punctate. 
Length 4,4,-44, breadth 14-4 millim. (d¢ 2.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
Three specimens. Easily recognizable by its elongate, subfusiform shape, the 
eeneo-piceous surface, the dense fascicles of coarse, narrow, ochreous scales on the 
elytra, the narrowly sulcate prosternum, the long legs, and the slender tarsi. 
SPHENOBARIS, gen. nov. 
Mandibles not decussate, almost straight on their inner edge (as seen closed), rounded externally ; rostrum 
arcuate, moderately long, the antenne inserted at the middle, the funiculus stout, the club ovate ; 
prothorax broad, feebly bisinuate at the base; scutellum small, transverse; elytra triangular, scarcely 
wider than the prothorax, conjointly rounded at the apex, the humeri rounded, leaving the upper portion 
of the mesothoracic epimera exposed; pygidium exposed, vertical, short, strongly transverse; prosternum 
flat, obsoletely bifoveate in the transverse subapical groove, the basal process broadly truncate behind 
and almost on a level with the connate, flattened portions of the meso- and metasternum; anterior and 
intermediate coxse each separated by more than their own width ; legs moderately long; femora sub- 
BIOL, CENTR.-AMER., Coleopt., Vol. LV. Pt. 5, February 1909. 3 FF 
