CYLINDROCERUS. 239 
and y of Schénherr have a short additional streak on the fifth elytral interstice, and 
they may belong to a different species. The sexual marks of distinction are strongly 
marked in C. comma, the rostrum being abruptly narrowed from behind the middle, 
and smooth thence to the tip, inthe ¢. The prosternal spines of the ¢ vary in length. 
The antennal club is very elongate in both sexes. 
2. Cylindrocerus madaroides, sp.n. (Tab. XIII. figg. 25, 25a, b, 3.) 
Oblong-rhomboidal, flattened above, black, shining ; a stripe on the third elytral interstice (reaching to near 
the apex), and sometimes a small spot at the middle of the fifth, and an interrupted series of spots and 
streaks along the sides of the body beneath (often abraded or wanting on the propleura), densely clothed 
with oblong or oval, ochreous scales, the rest of the surface almost bare. Head finely punctate ; rostrum 
longer than the head and prothorax, stout, becoming more slender in its outer half, coarsely punctate at 
the sides, almost smooth above and towards the apex, the antenne inserted near the middle in both 
sexes, the club stout, oblong-ovate, about as long as joints 2-7 of the funiculus united. Prothorax 
conical, broader than long, almost smooth. Elytra triangular, flat on the disc, with one or two shallow 
transverse depressions towards the sides, the humeri rounded; sharply punctate-striate, the interstices 
flat, the third closely punctate. Beneath sparsely, the sides of the meso- and metasternum coarsely, 
punctate. Prosternum with a deep transverse excavation in front. 
gd. Prosternum armed with two blunt spines or tubercles, and with a deep circular cavity between them ; 
' ventral segment 1 broadly excavate in the middle; anterior tibiw sparsely ciliate within. 
. Prosternum with a shallow transverse depression in the middle before the anterior cox, 
Length 43-52, breadth 2-,-2% millim. (¢ @.) 
Hab. Guatemata, Purula, San Gerénimo, Calderas (Champion). 
Nine specimens. Closely related to C. comma, but with the antennal club shorter, 
the prosternum with a deep transverse cavity in front (instead of two fovex), the spines 
short, the rostrum very similarly formed in the two sexes, the prothorax more transverse, 
the ochreous stripe on the third elytral interstice longer, &c. 
3. Cylindrocerus glabripectus, sp. n. 
Oblong-rhomboidal, flattened above, shining, black; an oval spot at the base of the third elytral interstice, a 
spot at the middle of the metathoracic episterna, another at the sides of the first ventral segment, and 
sometimes a smaller one at the sides of the fourth segment, thickly clothed with ochreous or whitish 
scales, the rest of the upper and under surfaces almost bare. Head with a few minute punctures ; 
rostrum much longer than the head and prothorax, stout and rather coarsely punctate in its basal half, 
the apical half more slender and almost smooth, the antenne inserted at (Q) or a little beyond (¢) the 
middle, the antennal club about as long as joints 2-7 of the funiculus united. Prothorax conical, broader 
than long, strongly constricted in front, almost smooth. Elytra triangular, flattened, and with one or 
two shallow transverse depressions on the disc; sharply striate, the strie feebly punctate, the interstices 
almost flat, the propleura almost smooth. Beneath very sparsely and minutely, the sides of the meso- 
and metasternum coarsely, punctate. Prosternum very deeply bifoveate in front and more or less 
excavate in the middle before the anterior coxe. 
3. Prosternum in the fully-developed form armed with two conical tubercles, and with a circular fovea 
between them; first ventral segment with a transverse, large, shallow, closely punctate, finely pilose 
depression in the middle behind; anterior tibie ciliate within, the anterior tarsi sometimes hairy. 
Length 33-5, breadth 2-2} millim. (¢ 2.) 
Hab. Mexico, Cordova (Sallé, Hige), Jalapa (Hoge); Guatemata, Cubilguitz and 
Sinanja in Vera Paz, Cerro Zunil (Champion) ; Panama, Volcan de Chiriqui, 4000 feet 
(Champion). 
