1871.] 245 
and removed from the margin, and by its light, clear colours. The group, 
in fact, embraces a number of New World species, easily recognizable 
_ by tbe characters here enumerated, but they are not so distinct from 
| Tachys as Schaum appeared inclined to admit. In form it is difficult to 
distinguish them from such species as Zachys pulchellus, Laferté, and 
many others, which possess only one or two deeply impressed sutural 
strie ; and the character drawn from colouration is invalidated by the 
discovery of a species agreeing in structure very well with the rest, but 
having a dark metallic hue. The following species are new: 
PERICOMPSUS GROSSEPUNCTATUS, n. sp.—P. hirsuto (Schaum) affinis, 
paulo major, sparsissimé hirsutus, elytris seriebus punctorum sex grossis cequa- 
libus ; rufo-testaceus, elytris pone medium fascia indeterminata rufescenti- 
fusca ; thorace angusto, postice valde angustato ; elytris quarta parte apicalr 
levissima, antennis pedibusque flavo-testaceis. Long. 1 lin. 
Of the same slender form as P. hirsutus of Schaum, but differs in 
the elytra having only a very few long erect hairs (two of which on 
each elytron proceed from punctures on the 8rd interstice), instead of 
the rather dense clothing of that species; and in the inner rows of 
punctures not being smaller than the rest. These punctures do not lie 
in distinctly impressed striw. The apex of the elytra is not blackish, 
nor is there a black streak connecting the fascia with the base as in 
P. hirsutus. 
Rio Janeiro. In my own collection and that of Mr. Grut. 
PERICOMPSUS PICTICORNIS, n. sp.—P. hirsuto forma simillimus, differt 
corpore nudo, antennis pallidis art. 4—6 fusco-niaris ; elongato-ovatus, rufo- 
testaceus, antennis pedibusque pallidis, illis art. 4—6 fusco-nigris ; thorace 
postice valde angustato, elytris striis sex punctulatis leviter sed distincte vm- 
pressis, pone medium fuscia fusco-nigra prope suturam interrupta. 
Long. 1% lin. 
Distinguished by the pale antenne having a blackish ring in the 
middle, including joints 4 to 6. The elytra are broadest in front, and 
attenuated towards the apex; there are a few long sete only, arising 
from punctures, and the striz are distinctly impressed and finely 
punctured. The black fascia is distinct only on the disc, becoming 
reddish near the suture, and the dusky-red colour is sometimes extended 
posteriorly along the suture towards the apex. The apex of the elytra 
is smooth and glossy. 
Rio Janeiro, apparently common ; taken by the late Rev. Hamlet 
Clark and Mr. Squires. I have examined about a dozen specimens in 
my own collection and that of Mr. Grut. 
