The genus Callistus, which contains but one species, is cha- 
racterized by a small mouth, the parts composing it being 
weak : all the joints of the antennae are pubescent, although it 
is common with the Carabidae to have the 3 first joints naked, 
or at most producing only 2 or 3 bristles on each ; the hinder 
tibiae are very long ; and the internal maxillary palpus is not 
biarticulate but forms one lobe. We wish here to observe, that 
the example dissected was a male in which the external max- 
illary palpi were deficient ; they were consequently drawn 
from our cabinet specimen, which may have slightly affected 
their relative proportions. 
Callistus lunatus is not uncommon in France and other 
parts of the continent, where it is found under stones ; but in 
this country it is a very local if not a very rare insect, being 
attached to chalky districts, particularly those of Kent, in which 
county a specimen was captured the beginning of last May 
under a flint stone on a chalky bank near Sittingbourn, by 
Mr. A. Mathews of Turnham Green : the year previous 2 
specimens were taken the middle of June, one in a corn-field, 
the other in Coomb Wood, near Dover, by Mr. R. L. Le- 
plastrier*, of whom we purchased the individual figured. 
The plant is Scabiosa columbaria (Small Scabious). 
* We recommend Entomologists who visit Dover to call upon Mr. Leplas- 
trier of Snargate Street, who disposes on very reasonable terms of British Insects 
principally collected by his son in the neighbourhood. 
