51 
of closely allied species and varieties, when carefully studied, 
seems to point to this conclusion. 
Genus Phacellocera. 
Castelnau, Anim. Artie, ii. p. 468. 
Char, emend. : Antennae long and slender, eleventh joint about 
as long as the tenth, and filiform in both sexes ; first joint slen- 
der at the base, and enlarged about the middle into a thick pyri- 
form club ; third joint thickened at the tip; fourth also sometimes 
dilated at its apex, and furnished with a small brush of hairs. 
Body elongate, parallel- sided, depressed. Thorax narrow, the 
lateral tubercles sm^all, acute. The mesosternum plane or bi- 
tuberculated, its hind margin depressed in conjunction with the 
fore edge of the metasternum, as is the rule in the Anisocerinse. 
The fore tarsi in the c? are not dilated, and scarcely fringed. 
I think the following species may be comprised in this 
genus 
1. P. plumicornisy Klug, Entom. Bras., specimen alterum, 
pi. 42. f. 5. South-east Brazil. 
2. P. Buquetii, Guer. Icon. R. A. p. 240. Cayenne. 
3. P. Batesii, Pascoe, Trans. Ent, Soc. Bond. 1858, n. s. iv. 
Upper Amazons. 
4. P. limosa, n. sp.* Venezuela. 
Phacellocera Batesii^ Pascoe. 
Phacellocera Batesii, Pascoe, Trans. Ent. Soc. Bond. 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 
antennse are three times the length of the body in the 6 , and 
not much shorter in the $ ; 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 
* P. limosa. Corpus parum elongatum, depressum, fuliginosum, pilis mi- 
nutis squamiformibus cinereo-fuscis vestitum. Antennae ( $ ) corpore 
vix longiores, articulo quarto simplici. Cap\it et thorax punctata, 
hujus tuberculis lateralibusbrevibus acutis, dorso trituberculato. Elytra 
passim granulato-punctata, singulis prope basin tuberculo magno cris- 
tato, et postice fasciculis duobus pilorum munitis. Antennae fuscae, 
articulo tertio apice valde dilatato. Long. 6 lin. $ . Hab. Venezuela. 
G 2 
