NANOBARIS.—TYTTHOBARIS. AT5 
width; legs short; femora unarmed, shallowly sulcate; tibiw feebly unguiculate ; tarsal claws long, 
subconnate at the base; body short-ovate. 
Type, VV. plumbata. 
A genus including two very small closely-allied forms, distinguishable by their small 
prothorax, broad, retuse, setose elytra, arcuate, moderately long rostrum, abrupt 
antennal club, and narrowly sulcate prosternum. 
1. Nanobaris plumbata, sp.n. (Tab. XXII. figg. 30, 30 a, 3.) 
Leaden-black, above and beneath opaque and alutaceous; the elytral interstices each with a row of closely- 
placed, cinereous, semiercct sete, the punctures on the rest of the surface each bearing a minute hair-like 
scale. Head minutely punctate ; rostrum very stout, about as long as the head and prothorax, closely, 
finely punctate. Prothorax much broader than long, the sides parallel behind and rounded anteriorly ; 
densely, very finely punctate. Elytra areuately narrowing from about the middle, very finely and 
shallowly punctate-striate, the interstices broad and flat throughout, closely and finely uniseriate-punctate. 
Beneath finely punctate; fifth ventral segment, broadly arcuate-emarginate, leaving the transverse 
pygidium exposed ventrally, in the ¢. Prosternum shallowly sulcate from the transverse subapical 
groove to between the coxe. 
Length 2-21,, breadth 1-175 millim. (¢ @.) 
Hab. Mexico, Vapachula in Chiapas (Hoge); Panama, Volcan de Chiriqui 3000 tect 
(Champion). 
Five specimens, all but one from Chiriqui, Easily recognizable by its leaden-black, 
opaque surface and strongly setose elytra. 
2. Nanobaris retusa, sp. n. 
Nigro-piceous, somewhat shining; the elytral interstices each with a row of closely-placed, cinereous, semi- 
erect setee, the punctures on the rest of the surface each bearing a minute hair-likescale. Head minutely 
punctate; rostrum moderately stout, as long as the head and prothorax, very finely punctate. Prothorax 
densely, finely punctate. Elytra Snely punctate-striate, the interstices broad, flat, closely and finely 
uniseriate-punctate. Beneath closely and finely, the ventral segments 1-4 with the broad shining space 
down the middle sparsely, punctate. Prosternal sulcus deep and extending forward to the apex. 
Length 2,,-22, breadth 14-15 millim. (9.) 
Hab. Mexico, Cordova (Knab, in U.S. Nat. Mus.), Teapa (If. Hf. Smith) ; Guatemaa, 
San Juan in Vera Paz (Champion). 
‘Three specimens, the one from Cordova a little more shining than the others. ‘This 
is the Atlantic-slope representative of NV. plumbata, differing from that insect in its 
somewhat shining surface, deeper prosternal suicus, and more distinctly striate 
elytra. 
TYTTHOBARIS, gen. nov. 
Mandibles short, decussate ; rostrum strongly arcuate, stout, as long as the prothorax, separated from the head 
by a transverse groove ; antenne with a small, oblong-ovate, densely pubescent club, the tuniculus 
7-jointed and closely articulated ; eyes rather small; prothorax narrow, bisinuate at the base; scutellum 
very small, free, rounded ; elytra much wider than the prothorax, oblong, conjointly rounded at the tip ; 
pygidium vertical, very short ; prosternum deeply bifoveate near the apex and also narrowly sulcate ; 
3PP2 
