OBSERVATIONS ON THE, ETC. 
the former it was also crammed with insects Coleoptera, Diptera 
and other winged insects ; in both it is less gizzard-like than in 
Hirundo. It is in fact more a bag or pouch than a gizzard, the 
walls comparatively thin, the proventricular dilatation very slight, 
and there is no indication of any crop as in Fringilla. In com- 
parison with the organ in Trogon , Prionites, and Halcyon , it is 
more fissirostral than in the two first, and approaches closest to 
that of Halcyon , which may be accounted for by the food of the 
latter being more insectivorous than that of either of the two first. 
The termination of the canal is in a gently dilating cloaca, the 
cecal appendages being merely rudimentary, thus agreeing with 
Hirundo. 
From these comparisons, then, we are led to the opinion, that 
the position hitherto assigned to Artamus is erroneous, and that 
its proper station is among the Fissirostres, probably immediately 
after or following the swallows, and leading by them to the bee- 
eaters, &c., by means of A. superciliosus. 
Reference to Plate. 
a Cypselus. 
b Artamus sordidus. 
c Hirundo rustica. 
d Artamus leucorhynchus. 
e Trojon. 
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