Sais 
156 ON THE CLASSIFICATION or Br 8. 
suckers ; and, after tracing their connection with tl 
swallows, the swallows with the bee-eaters, and the 
bee-eaters with the kingfishers, we finally return to the 
point whence we started. ; 
(176.) The other genera associated with the trogons 
deserve attention : we have already mentioned the pecu- 
liar broad bill of the great jacamar. Between this bird 
and the trogons are placed the different species of 
motmots (Prionites Ill.) ; one of which has the bill 
greatly depressed, and all, like the genuine trogons, 
have the margins toothed or serrated. Placed, therefore 
at the extremity of this family, the motmots appear 
connect the trogons with the jacamars, while at the 
same time they effect that important union with the 
scansorial birds which we have already mentioned. 
(177.) The analogies between the foregoing families 
and the principal divisions or tribes of the perching birds 
have already been mentioned. It nevertheless becomes 
a question, whether the Caprimulgide should not be 
considered as typical of the Fissirostres, rather than 
that station should be assigned to the Hirundinide, 
upon the same principle as that which makes the Picide, 
and not the Psittacide, the chief type of the Scansores. 
The Caprimulgide and the Picide are each pre-eminent 
in that particular organisation which belongs to their — 
own circles, just asthe Hirundinide and the Psittacide 
have the greatest general perfection of structure in all 
other respects. If, then, the analogies are to be thus 
founded, the families of the Fissirostres, and the tribes 
of the Insessores, will each follow in their true chain of 
affinities, without that transportation seen in the table, — 
Vol. I. p. 360.—thus : 
 Controstres. : Caprimuletide. : 
Dentirostres. ; The two typical groups, } Stcrunintiies 
Fissirostres. Pursue their prey on the wing. Meropida. ® | 
Tenuirostres. Bill very long, slender, entire. Halcyonida. { 
f Wings short, convex ; bill short, arched tf Trogontde. 
Scansores. : tail broad, long. 
