Doctrine of Affinity and Analogy. 97 
sus, &c. the fore-breast (antepectus), or the part immediately 
under the thorax, is more or less covered with impressed puncta. 
In the Harpalide and Catascopus it is quite free from them. In 
the former tribe likewise the legs, especially the thighs, are 
slenderer and less robust than in the latter. The head moreover 
in these is narrower behind, so as to form a distinct neck ; whereas 
in £hose, if any thing, it is widest behind, and the neck is formed 
by the convexity of that part and not by any constriction of it. 
From all these circumstances, I think, it is sufficiently evident 
that the relation of Catascopus to the Harpalide is that of affinity, 
while that which it bears to the Elaphride, insects which at first 
sight it most resembles, is merely that of analogy. But there is 
still another tribe of which it exhibits many characters, I mean 
those which constitute M. Latreille's first section of his Carabici, 
which have the head and thorax much narrower than the abdo- 
men, and truncated or very obtuse elytra; for instance, Anthia, 
Brachinus, Lebia, &c.; and with these at one time I felt inclined 
to arrange the genus I am considering ; but the different charac- 
ters of the Labium convinced me that it ought rather to go with 
the Harpalide. Should any master in Entomology hereafter 
undertake a new arrangement of Carabus L., he may perhaps 
bring the Harpalide and the above section nearer to each other; 
and in this case Catascopus would very well connect the two 
tribes. The exact place of the genus I have not been able satis- 
factorily to ascertain. Of all the known genera of the Harpa- 
lide it seems to approach nearest to Pterostichus Bon., or Spho- 
drus Clairv., principally on account of the shape of the thorax ; 
but there must be several intermediate links between them. 
VOL. XIV. 0 Hardwicka. 
