248 RHYNCHOPHORA. 
DIORYMEROPSIS, gen. nov. 
Rostrum arcuate; mandibles slightly notched on their inner edge, not or feebly decussate ; antennal club 
ovate ; prothorax more or less tubulate in front; scutellum small, free; elytra much wider than the 
prothorax, triangular or subtriangular, sharply striate; pygidium not visible; prosternum unarmed, 
with a parallel-sided or anteriorly-widened sulcus extending backward between the coxe, the median 
basal portion broadly produced and partly covering the mesosternum; femora unarmed, more or less 
sulcate beneath ; anterior tibise excavate at the apex externally for the reception of the base of the 
retractile tarsus; tarsal claws small, free or subconnate at the base; body rhomboid-ovate or rhomboidal, 
polished, glabrous or clothed with scattered scales above. 
Type, D. disjunctus. 
Four species are included in this genus—two (D. disjunctus and D. piceicollis) with 
the prosternal sulcus parallel-sided and two (D. cavimanus and D. uncatus) with the 
sulcus narrowed posteriorly *. Diorymeropsis bears a certain relationship to Zygobaris 
and its allies, all of which have connate tarsal claws. 
1. Diorymeropsis disjunctus, sp. n. (Tab. XIV. figg. 5, 5a, 3.) 
Rhomboid-ovate, shining, black ; the elytra and the lateral portions of the prothorax with widely-scattered, 
elongate, narrow, white scales, which become a little more crowded at the base of the first and second 
elytral interstices, the under surface and legs more thickly clothed with small narrow white scales; the 
sides of the prothorax anteriorly, pro- and mesopleura, rostrum, and anterior femora in front, with 
numerous intermixed coarser ochreous scales in the g. Head with minute scattered punctures, 
transversely sulcate between the eyes ; rostrum (Q ) arcuate, stout, slightly thickened towards the base, 
about as long as the head and prothorax, closely punctate, smooth along the middle, the scrobes extending 
forward to near the tip, (¢) stouter, squamose, rugulosely punctate and finely carinate; antenns 
inserted behind the middle of the rostrum in both sexes, the outer joints of the funiculus transverse, the 
club ovate. Prothorax transverse, narrowing from the base, strongly constricted in front, the sides 
rounded anteriorly ; very sparsely punctate, the punctures becoming coarser and more crowded laterally. 
Scutellum oblong. FElytra wider than the prothorax, rounded-triangular, slightly depressed along the 
suture; sharply striate, the strie feebly punctate, the interstices broad, flat, finely and irregularly 
uniseriate-punctate. Beneath closely and coarsely, the ventral segments more sparsely, punctate. 
Prosternal excavation narrow, parallel-sided, extending as far as the hind margin of the anterior coxe. 
Legs short, closely punctate; femora sulcate beneath; anterior tibis hollowed at the apex externally, 
finely ciliate within in the $; tarsal claws small, free. 
Length 3-33, breadth 13-2,), millim. (¢ @.) 
Hab. Panama, Bugaba (Champion). 
Hight specimens, one only of which isa male. ‘The scattered, elongate, adpressed 
white scales on the elytra are very conspicuous in this insect, and the sexual differences 
in the vestiture of the rostrum and propleura are characteristic. 
2. Diorymeropsis piceicollis, sp. n. 
Subrhomboidal, shining, black, the prothorax piceous; the under surface and legs sparsely clothed with 
minute, hair-like, white scales, the first elytral interstice with a short line of similar scales at the base. 
Head minutely punctate, transversely grooved between the eyes; rostrum stout, arcuate, scarcely longer 
than the prothorax, thickly punctate, the antenns inserted at the middle, Prothorax broader than long, 
rapidly narrowed from the base, strongly constricted in front; sparsely, minutely punctate, the punctures 
becoming coarse and crowded on the flanks. Scutellum very small, subquadrate. Elytra subtriangular, 
* Pachybaris canthoxyli, Linell, from Texas, is nearly related to D. digjunctus and it will probably have to 
be included in Diorymeropsis. 
