456 RHYNCHOPHORA. 
to the others, the alternate ones a little more raised than the rest, 3 swollen at the base. Beneath 
densely, finely punctate. 
Length 43-5, breadth 13-2 millim. 
Hab. GuatemaLa, Teleman (Champion), Panzos (Conradt). 
Four specimens, all from the lower part of the Polochic Valley. 
GUIOPERUS. 
Guioperus, Perty, Del. Anim. Art. Bras. p. 78 (1830) ; Lacordaire, Gen. Col. vii. p. 78. 
Pycnopus, Schénherr, Gen. Cure. iv. p. 280 (1837). 
Gyioperus, Gemminger and Harold, Cat. Col. viii. p. 2550. 
A genus including a few Tropical-American forms. The five inhabiting our region, 
all of which have a sharp submedian tooth on each of the tibiz, may be separated 
thus :— 
a. Elytra with a Submarginsl vitta and two small spots on the disc 
white ... . . 
b. Elytra with three “paler fascive ; prothorax bivittate ; “tibiae without 
pencils of fulvous hairs near the median tooth 
c. Elytra with two paler fascie; prothorax unifasciate; tibie with two 
pencils of fulvous hairs near the median tooth . 
d. Elytra each with two partly denuded patches on the disc. 
a’. Prothorax without bare spaces on the disc; elytra with all the inter- 
stices seriato-tuberculate . . . . . . Soe ee 
b'. Prothorax with two transverse bare spaces on the disc ; elytra with the 
alternate interstices only tuberculate . . . . 
1. Guioperus circumdatus, sp.n. (Tab. XXII. fig. 12.) 
circumdatus, sp. nD. 
trifasciatus, sp. ns 
eques, Pasc. 
klugt, Gerst. 
sexsignatus, sp. 0. 
Subovate, black, thickly clothed with small brown or reddish-brown scales, the elytra with a denser line of 
whitish scales extending down the whole length of the sixth interstice to the suture, and the sutural 
interstice to near the base and two small spots on the fourth also whitish ; the meso- and metasternal 
side-pieces and also the dorsal surface of the femora densely albo-squamose. 
Head sparsely, the 
rostrum rugosely, punctate. Prothorax transverse, rounded at the sides anteriorly, narrowed in front ; 
closely granulate. Elytra narrowing a little towards the base, the humeri obtuse; seriate-punctate, 
the interstices each rather closely and regularly seriato-granulate, Metasternal plice inconspicuous. 
Legs very stout; tibis with the median tooth rather small and not preceded by pencils of fulvous 
hairs. 
Length 154, breadth 84 millim. 
Hab, Nicaracua, Chontales (Janson). 
One specimen. More oblong than G. griseus, Perty, from Brazil, more closely 
granulate above, the elytra with a complete whitish submarginal vitta and two small 
spots on the disc within this, the rows of granules straight throughout. 
G. gerstaeckert 
(Jekel) is also an allied form; it has, like G. grisews, two bare black lines on the 
