292 RHYNCHOPHORA. 
3, Amphicranus belti, sp. n. (Tab. IX. figg. 7; 7a, apex of elytra.) 
Elongatus, nitidus, glaber, ferrugineo-rufus, prothorace et elytris ad apicem nigris ; prothorace a basi usque 
ad apicem parallelo, inde rotundato, margine bisinuato ; elytris a medio obliquissime excavatis ad apicem 
productis emarginatis, margine declivitatis prope suturam utrinque bidentato. 
Long. 7 millim. 
Elongate, shining, glabrous, ferruginous-red, with the anterior third of the prothorax and the apical half of 
the elytra black. Head hidden in the type, piceous ; antenne ferruginous, the club fuscous, obovate, 
thinly pubescent, the first suture angulate towards the apex, the second curved, outer surface with a 
smooth spot at base. Prothorax oblong, parallel-sided from the base to its anterior third, thence con- 
stricted and subsinuate on either side, the apical margin thickened and ridged; in front more strongly 
declivous than in A. balteatus, the declivity subangulate at its junction with the cylindrical portion and 
marked with irregular concentric elevated lines of fused asperities ; surface finely asperate immediately 
behind the angle of the declivity, behind smooth and imperceptibly punctured. lytra as in A, balteatus, 
with the divaricate apical prolongations somewhat longer, the surface rather more distinctly punctured ; 
the margin of the excavation armed with two spines only near the suture, of which the lower is the 
larger ; the lateral border less prominently angled before the apex, less incurved and armed with a 
smaller tooth, fundus of the emargination more glossy.. Underside and legs reddish-testaccous, with the , 
knees and apex of the abdomen darker. 
Hab. Nicaragua, Chontales (Belt). 
This species is inferior in size to A. balteatus, from which it is distinguished by the 
red-and-black thorax. The single example has been so injured by pinning that the 
width cannot be measured. 
4, Amphicranus torneutes, sp.n. (Tab. IX. figg. 8; 8a, apex of elytra.) 
Elongatus, cylindricus, piceo-fuscus, pedibus pallidis; prothorace anterius obscuriore, lateraliter indistincte 
testaceo-maculato, ad apicem sat fortiter declivi, margine replicato; elytris ad basim obscure testaceis, 
ad apicem longe productis, declivitate obliqua, ambitu superne utrinque subacute tridentato. 
Long. 6°3 millim.; lat. 1°5 millim. 
Very elongate, cylindrical. Head fusco-piceous, the front dull, punctured laterally, with a transverse-oval 
subcallose space over the mouth; eyes oval, rather small, convex, emarginate; antenne piceous, club 
infuscate, rather large, oval, with short dense pubescence and a few longer hairs, the sutures shining, 
_ curved, more strongly on the outer face, the basal joint with a smooth spot on each side. Prothorax one- 
third longer than broad, the base curved, its hind angles obtusely rounded, the sides parallel, the apex 
obliquely constricted and laterally subsinuate, rounded in the middle, with a thickened and reflexed 
margin ; surface fuscous-brown, darker apically, with an indistinct testaceous spot over each flank, 
strongly but not vertically declivous in front, shortly and thinly pubescent, asperate with irregularly 
scattered elevations, close in front and forming a ridge concentric with the reflexed margin, the declivity 
separated by a shallow transverse sulcus from a finely asperate callus which forms the anterior boundary 
of the horizontal portion, which is subopaque, finely and sparsely punctured, more strongly towards the 
transversely-impressed base. Scutellum rounded-triangular, shining, impressed, infuscate. LElytra as 
wide as the prothorax and three-fourths longer, truncate at base, with rounded humeral angles, the sides 
parallel, slightly convergent before the apical processes, which are obliquely rounded at the tip and 
separated by a deep narrow emargination with divergent sides, their apical angles rounded ; surface nearly 
cylindrical, fuscous-black, obscurely testaceous towards the base, shining, finely punctured in remote rows 
and scantily hairy near the suture, which is impressed before the excavation ; the latter oblique, beginning 
behind the middle of the elytra, shining, with scattered subasperate punctures, its margins scantily hairy, 
transverse above and not oblique, each with three spinous teeth near the suture, the first and second 
small, the third stout and subacute, thence becoming subcrenate and falling away in an oblique curve to the 
middle of the declivity, where it forms the upper border of the apical process ; the process much longer 
