274 
Mr. H. W. Bates on Cerambycidce 
2. Perihoeum eheninum, 
P. pubescenti valde affinis ; differt corpore toto aterrimo, 
politissimoj capite^ articulo basali antennarum_, et protho- 
race subtus opacis griseo-tomentosis^ sternis lateraliter 
sericeis. 
Long. 9 lin. c?* 
Hab. — PebaSj Upper Amazons. 
3. Periboeum Ussonotum, n. sp. 
Angnstatum^ castaneo-rubrum, nitidum, antennis pedi- 
busque nigris; tborace elongato subcylindrico^ lateribus 
rotundatis,, supra Isevi ; elytris a pice sinuato-truncatis, 
bispinosis, spina suturali brevi ; pedibus brevibus_, femori- 
bus prope apicem clavatis^ intermediis et posticis bi- 
spinosis. 
Long. 54 lin. ^ , 
A species belonging to Neplialius (Lacord.) , by tbe 
form of the thorax and the bispinose femora^ but to 
Periboeum by its abruptly clavate femora, and especially 
by its evidently close relationship to P. pubescens. The 
colour is reddish- chesnut, with the antennae and legs 
pitchy-black, the derm shining, but trunk and limbs 
clothed equally with very long and straight hairs. The 
head is strongly punctured, and naked ; the thorax is 
elongate, rounded, and quite unarmed on the sides, 
polished on the disc, and with a very strong bi-arcuate 
transverse furrow near the hind margin ; the sides are 
strongly punctured in patches, and the underside is 
evenly punctured. Scutellum naked. The elytra are 
not much wider than the thorax, and relatively not very 
elongate; the surface is coarsely punctured, except 
near the apex; the extreme tip, and the spines, are 
black. * 
Hub. — Eiver Tapajos, 
^ other species exist wiiich supply still further connectiug links between 
Perihceum and Nephalius, as defined by Lacordaire ; among them is — 
Neplialius fragilis, n. sp. 
Elongatus, subdepressus, nitidus, pilis sparsis erectis hirsutus, rufo- 
testaceus, antennis, elytris, femoribus basi, tibiis et tarsis pallidioribus. 
Caput plagiatim punctatum. Thorax elongatus, lateribus medij paulo 
rotundato-dilatatis, supra antice et postice constrictus et transversim 
sulcatulus, supra disco omnino Isevi. Elytra postice attenuata, apice 
truncata et bispinosa, spina suturali brevi, ambabus nigris; supra laevia, 
versus basin solum sparse punctata. Eemora distincte clavata, apice 
bispinosa, spina interiori longiori. 
Long. 5| lin. 
Hob . — Rio J aneiro (E coll. Dom. Rev. Hamlet Clark) . 
