APTEROMECHUS. 621 
b'. Legs short; rostrum much shorter than the prothorax, feebly curved or 
straight. 
a", Head bare and uniformly punctate between the eyes; elytra closely 
squamose, nigro-maculate towards the apex. . . . . . . . . ~ Species 3, 4. 
6". Head more or less squamose and rugulose between the eyes. 
 Hlytral vestiture close. 
*, Elytra with a large whitish apical patch. . . . . « . . Species 5. 
* Elytra with a common, well-defined, dark, rhomboidal or heart- 
shaped patch at about the middle . . . .... +... +. . Species 6, 7. 
ce’. Elytra faintly nigro-fasciate at the base and middle, and with a 
blackish streak along the suture at the apex. . . Species 8. 
d*, Elytra with a broad space down the basal half of the suture, and : a 
transverse patch at the apex, infuscate . . . . . . + . « Species 9. 
*, Elytra with at most some indistinct markings along the suture . . Species 10-12. 
ye “, Elytral vestiture sparse, at most clustered into small fascicles . . . Species 13-16. 
ce’, Elytral vestiture sparse, the white scales clustered into a few con- 
spicuous spots and a post-median fascia . . . . . . . . « . Species 17. 
1. Apteromechus scabrosus, sp.n. (Tab. XXX. figg. 23, 23a, 3.) 
Elongate-ovate, opaque above, shining beneath, black, the antenne ferruginous; variegated above with whitish 
and brown scales, the vestiture of the prothorax reduced to a whitish median line and a curved streak on 
each side of it at the base, the elytra with a large fulvous or brown apical patch, which extends broadly 
up the sides to the base (a broad space along the suture being more sparsely squamose), the apical patch 
bordered anteriorly and laterally with whitish, each elytron also with a sinuous whitish streak extending 
from the shoulder downwards, another below it externally, and a small blackish spot near the base of 
the third interstice; the head, rostrum, and legs thickly, and the under surface sparsely, squamose, the 
tibiae with a blackish annulus at the base; the granular elevations of the elytra each followed by a 
decumbent seta. Head and rostrum densely punctate, the eyes widely separated, nearly covered in repose ; 
rostrum short and stout, not reaching beyond the anterior coxe, feebly curved, bare at the tip, the 
antennee inserted towards the apex, joints 1 and 2 of the funiculus equal in length, the others short, 
the club ovate. Prothorax a little broader than long, rounded at the sides, narrowed in front, deeply 
bisinuate at the base; coarsely, rugosely punctate, and feebly carinate, the ocular lobes large. Elytra 
much wider than the prothorax, subparallel in their basal half, the humeri prominent ; seriate-punctate, 
the interstices 3 and 5 conspicuously, and 6-9 more feebly, raised, the ridge on 3 swollen near the base. 
Beneath coarsely punctate. Mesosternum raised, prominent, feebly emarginate. Legs stout, rather 
short ; femora feebly clavate, unidentate; anterior tarsi (¢) slightly dilated, joints 1 and 2 with long, 
fine, laterally projecting hairs. 
Length 83, breadth 33 millim. (¢.) 
Hab. British Honvuras, Belize (Blancaneaux) ; Nicaragua, Grenada (Sallé). 
Two specimens, precisely alike. Larger and more elongate than A. suffrago*, and 
not unlike Cryptorhynchus tirunculus, Boh., in its general facies, except that the 
scutellum is not visible. The anterior tarsi of the male are clothed with projecting 
hairs, as in that species. 
* The type is probably a female. 
