250 
Mr. H. W. Bates on Gemmhycidce 
Sub-fam. CERAMBYCINiE. 
Genus Hammaticherus. 
Serville, Ann. Soc. Ent. Fr. 1834_, p. 15; Lacord. 
Gen. viii. 255. 
1. Hammaticherus Batus. 
Cerambyx datus, Lin. Mus. Lud. Ulr. Beg. p. 69; 
G. Batus j Lin. Syst. Nat. ii. 625. 
Omnino fusco-niger, tarsis palpisque solum fulvis ; 
thorace rugis profundis non interruptis circiter decern 
transversis breviter cinereo-tomentosis ; elytris pube 
brevissima cinerea vix punctulatis^ apice recto truncato, 
utroque angulo longe spinoso; corpore subtus et pedi- 
bus cinereo-tomentosis. Antennae S corpore triple 
longiores, $ corpore paulo longiores ; utroque sexu arti- 
culis 3-6 apice mucrone valido recurvo armatis. 
Long. 1 un. 4 lin. — 1 un. 7 lin. S $ • 
The Linn 80 an name is sometimes applied to an allied 
but distinct species^ from South Brazil^ which has ches- 
nut-coloured elytra^ narrowly edged with blacky and 
golden pubescence on the thorax.* The excellent original 
description of Linnaeus,, in which both thorax and elytra 
are described as fuscous,, leaves no doubt which form 
he described ; and besides, at the early date when his 
description was written, the Entomology of South Brazil 
was almost unknown in Europe, although large numbers 
of insects had been received from Surinam. 
Hah. — Obydos, Guiana side of Lower Amazons. 
The species was rare in the Amazons ; found on the 
boughs of felled trees. 
2. Hammaticherus plicatus. 
Geramhix plicatus j Olivier, Entom. No. 67, p. 40, 
pi. xviii. p. 136. 
Corpus nigrum, cinereo-argenteo-sericeum ; thorace 
rugis profundis transversis paulo undulatis circiter de- 
* This species may be thus defined : — 
Hammaticherus castaneus. 
H. Bate maxime affinis, corpore piceo, subtus cinereo-tomentoso, capite 
nigro, thorace aureo-tomentoso, rugis profundis circiter 10 transversis, 
elytris castaneis, cinereo-pubescentibus, vix nitidis, marginibus omnibus 
nigro-fuscis, apice truncatis utrinque bispinosis. 
Long. 1 un. 9 lin. ^ . 
Hah. — Brazilia. 
