OF TANTALUS AND VANELLUS. 449 
The arrangement above described is only an exaggeration of what 
is found in Ciconia alba, in which species the lowermost nine-and- 
_ twenty tracheal rings are extremely shallow and slender, the fifteen 
above the bifurcation of the bronchi being antero-posteriorly flattened, 
the fourteen above them being in no wise peculiar except for their 
slenderness. In C. alba there is, however, a small prolongation up- 
wards of the lateral portions of the three lowermost tracheal rings, 
which forms a consolidated triangular process on each side, overlapping 
the next few rings, and looking extremely like rudiments of the 
similarly situated processus vocales of the Passerine tracheophone Page 627. 
syrinx, which resemblance is increased by the thinness of the neigh- 
bouring rings and their being flattened from before backwards. 
In Tantalus loculator there is no trace of these triangular processes. 
lts last tracheal ring, or three-way piece, is not enlarged, as it is in 
so many birds; and the rings of the bronchi for some considerable 
distance are complete as in the Ciconiide generally, which is so very 
seldom found to be the case in the Class. In this last feature the 
Storks agree with the Cathartide, and the general arrangement of the 
bifurcation of the Stork’s windpipe would require but little change to 
pass into a Cathartine type. ~ 
The uppermost bronchial rings are thinner on the outer side of 
each bronchus than they are internally, which consequently leaves 
. greater gaps between them along the outer margin of the tubes. 
Ring four on one side and ring three on the other are partly 
reduplicated, the extra processes ending freely in the bronchial 
membrane. 
From this description it is evident that these two Zantali differ 
greatly in the arrangement of their windpipes, whilst a recent com- 
parison of specimens makes it evident to me that what I thought on 
seeing T’. loculator might have been an error in my account of T. ibis, 
namely the posterior carination of the windpipe, is correct, in which, 
as well as in the relative lengths of trachea, the two species differ so 
much. ; 
In other anatomical characters Tantalus loculator agrees with T. ihis, 
and is perfectly ciconiiform. In both the great pectoralis muscle is 
formed of two layers,*as in the Steganopodes, Procellariide, and 
Cathartide only. The ambiens muscle is slender; the femoro-candal 
is minute, without any accessorius; and the semitendinosus, as well 
as its accessorius, are not large. There is no great gluteus muscle, 
nor any muscular slip from the biceps of the wing running to the 
patagium. 
The small intestine measures six and a half feet, the ceca half an 
inch, and the large intestine nearly three inches. The stomach is 
capacious, with but a small muscular development. The tungue is 
24 
