622 RHYNCHOPHORA. 
2. Apteromechus deciduus, sp.n. (Tab. XXX. fig. 24.) 
Oblong-ovate, rather narrow, nigro-piceous, the antenne, and the tarsi in great part, ferruginous; the elytra 
variegated with a rather dense clothing of coarse, fulvous, whitish, and black scales (the black scales 
condensed into a much interrupted median fascia, which extends broadly up the suture to near the base, 
and a streak down the suture at the apex, the whitish scales clustered into an oblique patch on the dise 
and a common, broad, irregular, subapical fascia) and also set with coarse, semierect, setiform scales; the 
prothorax with a few scattered fulvous scales, the vestiture of the head and legs rather dense, that of 
the under surface sparser and paler. Head rugulosely punctate, the eyes transverse and well-separated ; 
rostrum curved, scarcely so long as the prothorax, rugulose at the base, for the rest minutely punctate, 
the antenne inserted at a little beyond the middle, joints 1 and 2 of the funiculus equal in length, 
3 short, 47 transverse, the club oblong, acuminate. Prothorax nearly as long as broad, rounded at the 
sides, narrowed and feebly constricted in front; coarsely, confluently punctate, and finely carinate. 
Elytra much wider than the prothorax, subparallel in their basal half; shining, with rows of rather 
coarse, subquadrate punctures placed in shallow striae, the interstices more or less convex, subgranulate. 
Beneath alutaceous, shallowly punctate. Legs rather long; femora sharply unidentate. 
Length 44, breadth 2 millim. (2 ?) 
Hab. Panama, Bugaba (Champion). 
One specimen. This insect somewhat resembles A. nitidifrons and its allies, but 
has longer legs, more sharply dentate femora, a curved rostrum, &c. The vestiture of 
the elytra is coarse and of three colours. 
3, Apteromechus nitidifrons, sp. n. (Tab. XXX. fig. 25.) 
Oblong-ovate, nigro-piceous, the antenna, the tip of the rostrum, and the tarsi in part, ferruginous ; the elytra 
thickly clothed with fulvo-cinereous scales, which become more scattered and subfasciculate on the basal 
half of the disc, and marked with black along the suture towards the apex, the decumbent set fine and 
short; the rest of the vestiture very sparse and fine, the scattered scales on the prothorax long and trans- 
versely arranged. Head convex, closely, finely punctate, the punctures separate one from another, the 
eyes somewhat distant ; rostrum short, feebly curved, rugosely punctate in the 4, closely, finely punctate 
in the 9, the antenne inserted at the middle, the club stout, ovate. Prothorax broader than long ; 
coarsely, confluently punctate. Elytra considerably wider than the prothorax, subparallel in their basal 
half; seriate-punctate, the interstices rugulose and faintly granulate, 3, 5, 7, 8, and 9 slightly raised. 
Beneath shining, coarsely, closely punctate; ventral segments 1 and 2 subconnate. Legs short and 
stout; anterior femora unarmed, the other femora obsoletely dentate; tibis more or less curved 
externally. 
Length 43-44, breadth 2 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One pair. In this species the rostrum is rugose in the male, and closely, finely 
punctate in the female, the head is bare, shining, and uniformly punctate, the eyes are 
well-separated, &c. A. nitidifrons is less elongate than the Guatemalan A. longulus, 
the rostrum is differently sculptured, the eyes more distant, the first and second ventral 
segments are less distinctly separated, &c. 
4. Apteromechus rugipectus, sp. n. 
Oblong-ovate, shining, nigro-piceous, the antennz and the tips of the tarsi ferruginous ; the elytra (apparently) 
somewhat thickly clothed with brownish scales, and with a blackish patch on the suture towards the 
apex; the rest of the vestiture very sparse. Head convex, closely, finely punctate, the punctures separate 
