APTEROMECHUS. 627 
Hab. Mexico, Jalapa (Hoge: 3); Guatemata, Chacoj in Vera Paz (Champion: @ ). 
Two specimens, the male somewhat worn. Near A. punctiventris, but with the 
head a little smoother; the eyes narrowly separated ; the elytra less densely squamose, 
the alternate interstices more raised, the decumbent sete very short and inconspicuous ; 
the under surface shining. The anterior femora are strongly compressed at the base 
in the male. 
15. Apteromechus rugulifrons, sp. n. 
Oblong-ovate, nigro-piceous, the antenne and the tips of the tarsi ferruginous; sparsely clothed with small, 
intermixed brown and brownish-white scales, the latter condensed into a faint median line on the 
prothorax and various small, scattered, irregularly distributed spots on the elytra, the basal half of the 
rostrum thickly clothed with whitish scales, the sete of the upper surface very short, fine, and decumbent ; 
the vestiture of the legs fine and pale. Head densely punctulate, the eyes well-separated; rostrum 
short, feebly curved, closely punctate, rugulose at the base, the antennw inserted slightly beyond the 
middle, the club ovate. Prothorax transverse, rounded at the sides, narrowed and feebly constricted in 
front; coarsely, confluently punctate. Elytra wider than the prothorax, subparallel in their basal half ; 
seriate-punctate, the interstices convex, rugulose, and finely granulate. Beneath rather coarsely punctate ; 
fifth ventral segment shallowly foveate in the middle. Legs short, rather stout, the femora feebly 
dentate, the tibize rounded externally. 
Length 31, breadth 13 millim. (d.) 
Hab. Guatemata, Chacoj in Vera Paz (Champion). 
One specimen. Smaller and less elongate than A. opacifrons, the head denseyl 
punctulate, the eyes more distant, the prothorax not carinate, the elytral interstices 
equally convex and finely granulate. The elytra have shorter and finer sete than 
A. flavopunctatus and A. parvus. 
16. Apteromechus parvus, sp. n. 
Very like A. rugulifrons, but narrower, the pallid scales condensed into an irregular patch on the apical 
declivity of the elytra, the sete much longer and suberect ; the rostrum smoother, almost straight, the 
antenne inserted at the middle, the club ovate; the prothorax with indications of a median carina; 
the elytra with the seriate punctures oblong and very coarse, the interstices narrow, rugose, and feebly 
convex; the under surface coarsely punctate. 
Length 2,%,, breadth 13 millim. (9.) 
Hab. Guatemaua, San Gerénimo in Vera Paz (Champion). 
One specimen, which at first sight seemed to be the sexual complement of 
A. rugulifrons, but this cannot be the case. The insect is more elongate than 
A. flavopunctatus, and the vestiture of the elytra is differently arranged. 
17. Apteromechus leucospilus, sp.n. (Tab. XXX. figg. 30, 30a.) 
Oblong-ovate, opaque, black, the antenne and the tips of the tarsi obscure ferruginous ; sparsely clothed 
with minute brown scales, with scattered coarser whitish scales intermixed, these latter condensed on 
the elytra into dense, sharply-defined markings—three small spots on the third interstice (two towards 
the base and one near the apex) and a common transverse subapical fascia (formed by numerous small 
aggregated spots); the vestiture of the under surface very sparse and whitish, that of the legs whitish 
4 LL 2 
