620 Mr. J. O. Westwood on the Paussida, 
who, with a liberality as disinterested as rare, permitted me not 
only to examine, describe and figure, but also to relax his spe- 
cimen, thereby enabling me to render my paper more complete 
by adding figures of its various characters, especially of the 
trophi, which from their size I was able to effect with facility, 
and which, together with the other dissections figured by me, 
are the first representations which have been given in detail of 
those most valuable organs in the family. Of its locality that 
gentleman can give me no further information than that it came 
into his possession in a large box containing chiefly African in- 
sects. 
Genus 2. Paussus. Linn., Fair., Latr., $c. 
Pausus. Tliunh., Afz., $c. 
Type of the Genus P. microceplialus Linn. 
It is not my intention to detail the characters of this genus, 
the Transactions of this Society being already enriched with 
the elaborate details given by Afzelius. I however insert the 
cibarian characters, in consequence of the confusion existing in 
the writings of Afzelius and Latreille upon their nomenclature 
and formation. A considerable portion of the following cha- 
racters is indeed derived from their researches, but those of the 
lower lip and its appendages are the result of my own dis- 
sections. 
Corpus subdepressum. Caput mediocre, thorace angustius, pos- 
tick collo brevi instructum. Antenna magnae, articulo lmo 
minori, crasso, cylindrico-ovato, apice obliquk emarginato, 
tunc articulus ? parvus, subglobosus, emarginaturae prioris 
immersus, cui insidet articulus ultimus maximus saepifis ir- 
regulariter obtrigonus, compressus vel subdepressus, angulo 
infero et externo interdum uncinato. Labrum subcoria- 
ceum, parvum, transversum, angulis anticis rotundatis. 
Mandibulce 
