12. RHYNCHOPHORA. 
ACAMPTOIDES, gen. nov. 
Antenne inserted near the apex of the rostrum, the funiculus 6-jointed, 2-6 short, the club ovate; rostrum 
very short, stout, feebly curved; head convex, the eyes rather small, distant, coarsely facetted, almost 
covered in repose; prothorax arcuately projecting near the head in front, longer than broad, feebly 
sinuate at the base; scutellum very small, transverse ; elytra oblong, very little wider than the prothorax, 
with the tenth row of punctures abbreviated ; rostral canal closed posteriorly by the transversely raised 
basal portion of the mesosternum, the sides of the mesosternal cavity not raised, the prosternal cavity 
broad and deep, the anterior coxe hollowed within; metasternum rather long, the episterna narrow ; 
ventral segment 2 as long as 3 and +4 united, the first suture arched; legs short and stout, femora 
unarmed, tibial claw arising from the outer apical angle, tarsi with joint 3 bilobed, the claws simple ; 
body elongate, narrow, densely squamose. 
The type of this genus is a minute, elongate, densely squamose insect, not unlike 
the North-American Acamptus and Paracamptus, but differing from them in the 
6-jointed funiculus, the form of the mesosternum, &c. ‘The rostral canal might be 
described as open behind, as the sides of the mesosternal cavity are not raised and 
the canal is closed by the transversely raised basal portion of the mesosternum. 
Acamptoides would therefore be almost equally well placed at the end of the 
“ Ithyporides.” 
1. Acamptoides angustus, sp.n. (Tab. XXXV. figg. 11, 11 a.) 
Elongate-ovate, narrow, depressed, piceous, the elytra each with a stripe down the middle of the disc (occupying 
the interstices 4 and 5), and the legs in part, rufo-piceous, the antenne ferruginous; variegated above 
with a dense clothing of rather coarse, intermixed pale brown, whitish, and fuscous scales, the fuscous 
scales condensed. into two spots at the base of the prothorax, the elytra each with a pallid streak down 
the middle of the disc, followed by a white subapical spot; the upper surface also set with scattered, 
erect, light and dark scales, the latter condensed into two small fascicles at the apex of the prothorax ; 
the vestiture of the legs and under surface pale, the legs setulose. Head densely, the rostrum rugulosely, 
punctate. Prothorax gradually narrowing anteriorly, densely, finely punctate. Elytra subparallel in 
their basal half, finely punctate-striate, the interstices punctulate and almost flat. Beneath densely 
punctate. 
Length 23, breadth 1 millim. (<¢?) 
Hab. GuatEMALA, Pantaleon, Pacific slope (Champion). 
One specimen. ‘The sculpture in this insect is, in great part, hidden by the dense 
vestiture. 
TYNNICHUS, gen. nov. 
Antenne inserted at about the middle of the rostrum, the funiculus 5-jointed, 2 nearly as long as 1, 3-5 short, 
the club short-ovate, stout; rostrum short, almost straight, moderately stout; eyes large, narrowly 
separated, coarsely facetted, somewhat angular above; prothorax transverse, strongly bisinuate at the 
base, the ocular lobes feebly developed ; scutellum small, convex; elytra considerably wider than the 
prothorax, with the tenth row of punctures abbreviated; mesosternum horizontal, U-shaped; metasternum 
moderately long, the episterna broad ; ventral segments 1-3 subequal in length, the sutures straight and 
deep ; legs rather short, anterior and intermediate femora unarmed, the posterior pair with indications 
of a minute tooth, tibial claw arising from the outer apical angle, tarsi with joint 3 bilobed, the claws 
simple; body subovate, narrow, convex, squamose and setose. 
This genus is based upon a single species from the State of Panama. It is the first 
Cryptorrhynchid described with a 5-jointed funiculus. 
