308 
Mr. H. W. Bates on Gerarnhyddce 
Genus Aphatum_, nov. gen. 
Corpus lineare. Oculi laterales^ supra valde distantes ; 
tubera antennifera rotundata_, late separata. Antennae 
corpore breviores, filiformes^ articulis nec incrassatis nec 
carinatis, quarto brevissimo. Thorax elongatus, supra 
subplanus^ antice latior, haud constrictus_, postice grada- 
tim attenuatus. Elytra apice utrinque longe bispinosa. 
Pedes breves^ femora clavata^ apice bidentata^ tibiae haud 
carinatae. 
Allied to Phormesium, but differing from it_, as from 
all other genera of Ibidionince, in the form of the thorax, 
which is wider in front than behind, and has no trace of 
constriction, except near the hind margin. The widely 
distant eyes, and short antennae, which are exactly fili- 
form, i. e. are as thick at the apex as at the base (except 
the first joint), also distinguish the genus. 
1. Apliatum riifulum. 
Ihidion rufulum, White, Cat. Longic. Brit. Mus. p. 234. 
Parvulum, rufo-testaceum, parce pilosum, nitidum ; 
thorace elytrisque (punctis setiferis exceptis) laevibus. 
Long. 2 1 lin. 
Hah . — Eiyer Tapajos. 
Sub-fam. Obriinj:. 
Genus Obrium. 
Serville, Ann. Soc. Ent. Fr. 1834, p. 93; Lacord. Gen. 
viii. 361. 
1. Obrium cordicolle, n. sp. 
Pallide flavo-testaceum, passim pilosum, nitidum ; 
capite subtiliter rugoso-punctato ; thorace lateribus antice 
valde dilatato vel tumido, postice constricto, supra polito, 
laevi, dorso depresso ; elytris apice rotundatis, supra 
(punctis piliferis exceptis) laevibus, punctis, fascia tenui 
prope basin, secunda antice arcuata pone medium, terti- 
aque arcuata sensu inverse prope apicem, pallide fuscis ; 
femoribus clavatis. 
