300 
Mr. H. W. Bates on Ceramhyculce 
Long. 6|: lin. . 
One of the species which resemble the genus Gnoma in 
the curious form of the thorax narrowed in the middle. 
The whole surface is glossy^ and of a reddish-chesnut 
hue. On the middle of the thorax are two small spines 
or very acute tubercles,, and behind, near the hind mar- 
gin, are two obtuse rounded tubercles. The yellow lines 
on the elytra are about one-fifth the length of the wing- 
cases, and lie a little obliquely, the lower end being near 
the suture. 
Hah . — River Tapajos. 
7. Ibidion sulcicorne. 
White, Cat. Longic. Brit. Mus. p. 232. 
Elongatum, robustum, ferrugineum ; thorace sequali, 
nudo, opaco ; elytris nitidis, passim punctulatis, apice uni- 
spinosis, toto disco nigricante, linea longitudinali ante 
medium suturse parallela, altera pone medium obliqua 
pallidis ; pedibus robustis, femoribus grosse clavatis ; 
antennis ( c? ) articulo 3io reliquis latiori et cum 4to et 
5 to carinato et bisulcato. 
Long. 6 lin. . 
Hah. — River Tapajos. 
8. Ihidion sphceriinumj n. sp. 
Facies Perihoei [Spliceriinarum) , castaneo-fuscum, ni- 
tidum 5 capite grosse confluenter punctate ; thorace elon- 
gate, medio paulo latiori, subnitido, tenuiter tomentoso, 
punctulato et punctis nonnullis magnis setiferis; elytris 
apice sinuato-truncatis, bispinosis, spina suturali niinori, 
supra politis, punctis setiferis seriatim ordinatis, interstitiis 
sparsim punctulatis ; antennis sparsim setosis, articulis 
3io et 4to carinatis; pedibus curtis, femoribus valde 
clavatis. 
Long. 44 lin. $ . 
In its shining concolorous dark chesnut hue, without 
pale markings, and its bispinous elytra, this resembles 
species of Periboeum in the sub-family Sphceriince, but 
is readily distinguished by the unarmed antennae. The 
