of the Amazon Valley. 449 
Phacellocera Batesii, Pascoe. 
Phacellocera Batesii, Pascoe, Trans. Ent. Soc. Lond. 1858, n. s. iv. 
This species much resembles P. Buquetii of Cayenne, but it is 
considerably smaller. Its colour is light-greenish grey dusted 
with black; the sides of the head and thorax have a broad 
dusky stripe, and a narrow dusky zigzag belt runs across the 
elytra behind the middle, but does not reach the suture. The 
antennze are three times the length of the body in the ¢, and 
not much shorter in the 9; the joints are slender, almost capil- 
liform, the. basal one forms a very large and thick club, the 
third is thickened at the tip, the fourth simple like the rest ; 
the apical joints are the longest: the colour is black, except a 
broad grey ring round the third joint. 
This very curious insect is found at Ega, on the trunks and 
larger branches of fallen trees in the virgin forest. In crawling 
over the bark, it holds its antenne straight forwards, and has a 
most striking resemblance to a greenish-coloured species of 
Ptychoderes belonging to the family Curculionides, which swarms 
at times on the same trees. I have a specimen from Yurimaguas, 
on the Huallaga, near the Andes, which differs (as all the other 
examples do which I have seen from the same place) from the 
Ega type only in being of a dull-grey colour without any greenish 
or olivaceous tinge. 
Genus Antsocervs, Serv. 
Serville, Ann. Soc. Ent. Fr. iv. p. 79. 
This genus was founded by Serville on the Lamia scopifera of 
Germar, apparently the only species known at that time. Since 
then, a number of species have been added which do not belong 
to the genus, or at least would render its definition almost im- 
possible were they to be included. I think it better to restrict 
it to those species which present the following characters :— 
Body oblong, compact, subdepressed. Head broad; antenni- 
ferous tubercles slightly raised. Antenne 11-jointed in the ¢, 
the terminal joint about half the length of the penultimate ; 
10-jointed in the 2 ; the third joint in both sexes furnished at 
the tip with a compact rounded brush of short silky hairs. The 
mesosternum is very short, deeply depressed in the middle and 
on the hind edge in conjunction with the fore margin of the 
metasternum. ‘The ligula is narrow at the base, then abruptly 
dilated, the lobes widely divergent. The palpi are gradually and 
obtusely pointed. 
Anisocerus Onca, White. 
Anisocerus Onca, White, Cat. Long. Col. Brit. Mus. ii. p. 405, pl. 10. f. 4. 
Local var. a. A. Fonteboensis. Head and thorax as in A, Onca, 
