834 
Mr. H. W. Bates on Cerambj/cidce 
more robust^ and tlie tarsi mucli broader. The head, 
thorax, and scntellum are of a beautiful violet colour, 
and the ground-colour of the elytra is of greenish-blue 
metallic lustre graduating into violet on the sides. 
Hah. — Manaos, Eio Negro. 
One example only. 
3. CalUchroma hrachialej n. sp. 
C. vittato * (Fabr.) affine ; subtus viridi-seneum, argen- 
teo-griseo-sericeum ; supra capite et thorace cyaneis 
splendidis, hocmaculis duabus velutinis violaceis; scutello 
viridi- 80 ueo, splendido ; elytris nigro-velutinis, apice vio- 
laceis, sutura anguste vittaque discoidali a humero in- 
cipiente viridibus; pedibus nigris, femoribus quatuor 
anticis rufis, basi et apice fuscis, tibiis posticis S 
C. vittato compressis at minus dilatatis. 
Long. 13 lin. d' . 
Hah . — Eiver Japura, near Ega. 
One example. 
4. CalUchroma rugicolle. 
G. rugicolUs, Guerin, Icon. E. A. hi. 220. 
C. assimilatum, White, Cat. Longic. Brit. Mus. p. 158. 
I can perceive no difference between Para specimens 
of Whitens G. assimilatum and Mexican examples of C. 
rugicolle. The species belongs to the group in which 
the hind tibiae are only very slightly and very gradually 
dilated from base to apex. The colour is a brilliant 
metallic-green, silvery-gray-tomentose on the under 
surface, marked on the thorax with two short velvetty- 
black vittae, and on the elytra by a similar vitta, extend- 
ing from the middle of the base very nearly to the apex ; 
the sides of the elytra become gradually darker green 
and velvetty. The thorax is crossed throughout by fine 
rugae, and the antenniferous tubers are longitudinally 
rugose. All the thighs are tawny-red. 
* C. vittatum, described by Fabricius from Banks’ collection, is a 
common South Brazilian insect, having the thighs red, the under-surface 
clothed with golden tomentum, and the suture generally with a golden 
tinge : the hind tibiae are only slightly and gradually dilated from base to 
apex. 
