( sr j 
liesembles the prccedmg, but is destitute of the three 
)unctiires at the base of the thorax, and with that species- 
jelongs probably to Peryphus, Meg. 
Of the genus Bembidiuni; Latr. I have twenty two de- 
Bciibed species natives of N orth ^Lmerica. 
BYTISCUS, Linn. Latr. 
1. B. con^ue} 2 Sy Blackish-brown, margined with honey - 
yellow; four exterior grooves of the elytra nearly or quite 
geminately confluent at tip. 
Inhab. Maine. 
I^od?/ blackish- brown with a green reflection, covered a- 
bove with minute punctures : head dark green, with a fron- 
tal rufous semicircle, divaricating at its anterior tips into a 
more dilated spot between the canthus of the eye and the na- 
sus, which is yellowish, excepting the anterior edge ; above 
the nasus a transverse impressed line, ending each side in 
a more dilated spot: thorax margined all around with honey 
yellow; anterior margin with a somewhat double line, of 
which the posterior one is obsolete ; posterior margin with 
the yellow colour, near the lateral angles, contracted or al- 
most obsolete : elytra with about ten grooves which extend 
three-fourths the distance to the tip, the four exterior inter- 
stitial spaces confluent, or nearly so, by twos ; lateral mar- 
gin not dilated, honey-yellow with an obsolete branch to- 
wards the tip proceeding obliquely to the suture : beneath 
honey-yellow, sutures more or less margined with black. 
Length one inch and a half. 
This fine large species was sent me by Br. E. Holmes of 
Gardiner Lyceum, together with many other interesting ob- 
jects of Natural History. It is more than double the size of 
B. fasciventris, Say, and may also be distinguished from 
that species by the confluent termination of the four exterior 
grooves of the elytra in the female. 
It is less dilated than theZa^m'zmMS Fabr.and is destitute' 
of the w'ide elytral margin. 
g. B. habilisj Blackish olivaceous; thorax and elytra 
margined with yellow;: elytra with three series of punc- 
tures. 
Inhab. Mexico. 
Body oval ; above with minute, distant punctures : head 
with a frontal rufous angular line or semicircle^ divarica- 
