364 RHYNCHOPHORA. 
from which the above diagnosis is taken, has the general facies of a Calandrid, with 
the elytra marked as Madarus bilineatus. The only insect known to me at all 
resembling it is the eastern genus Plawxes, Pasc. Calandromimus, to the best of my 
recollection, was found under the sappy bark of a fallen tree, 
1. Calandromimus caviventris, sp. n. (Tab. XVIII. figg. 23, 23 a, b, 3.) 
Black or nigro-piceous, the extreme base of the antennzy rufous, the surface moderately shining; the elytra 
with a dense line of imbricate narrow ochreous scales running down the third interstice to a little beyond 
the middle, the rest of the elytral interstices thickly clothed with very small, oval fuscous scales, the 
prothorax with a small patch of hair-like ochreous scales at the base on each side; the punctures in 
the hollowed median portion of the under surface each bearing a small, hair-like, ochreous scale, and the 
excavated space itself bordered on each side with a dense matted fringe of longer and coarser, hair-like, 
similarly-coloured scales ; the tibie pilose within. Head closely, minutely punctate, transversely sulcate 
between the eyes; rostrum moderately stout, closely, finely punctate. Prothorax broader than long, the 
sides rounded and gradually converging to the short neck-like constriction ; closely, finely punctate, 
except along the median line. Elytra with rather broad obsoletely punctate strie, the interstices densely, 
finely punctate and with a smooth line on each side. Beneath shining, very closely and finely, the 
abdomen sparsely, punctate, the sides of the metasternum with coarse, scattered punctures; ventral 
segments 1 and 2 broadly hollowed, and 3 and 4 flattened, down the middle, 5 also excavate in the ¢. 
Femora closely, finely punctate. Anterior tibie hollowed and clothed with short hairs on the inner side 
towards the apex. 
Length 6%, breadth 23? millim. (¢ 9.) 
Hab. Panama, Bugaba (Champion). 
One pair, the specimen assumed to be the male having the anterior tibie acutely 
produced at the inner apical angle and the fifth ventral segment excavate. 
Sect. MADARIDES. 
Madarides vrais, Lacordaire (part.). 
Under this section are included the “ Madarids” with fully exposed pygidium. 
They all have the basal portion of the prosternum greatly developed and nearly or 
quite covering the mesosternum. Ampeloglypter would perhaps be almost equally 
well placed near Onychobaris in the “ Baridiides vrais.” 
MADARUS. 
Madarus, Schénherr, Disp. Meth. p. 273 (1826) ; Gen. Cure. iii. p. 636, viii, 1 »p. 105; Lacordaire, 
Gen. Col. vii. p. 256. 
This genus, after excluding Madarellus, includes numerous Tropical American forms, 
and will doubtfully have to be further divided. I follow Lacordaire in placing the 
species under two groups—one with the upper surface completely bare, and the other 
with patches of scales on the prothorax and elytra. The prosternum may be unim- 
pressed, bifoveate or sulcate, and is sometimes tumid between the coxe in the males 
(MM. tumefactus), or deeply emarginate at the base (1. corvinus, &c.). The rostrum 
is elongated and hairy in the male of quadripustulatus, and the anterior tarsi are 
