152 
APPENDIX. 
lines 
Length of pelvis 14 
Breadth posteriorly 
anteriorly 4 
Length of sternum 
Breadth of ditto 7 
in the narrowest part 5^ 
Depth of keel 2^ 
Length of coracoids 7J 
Breadth of scapula in the widest part 1 
No. of cervical vertebrae, wanting, 
dorsal ditto, wanting. 
sacral ditto 9 
caudal ditto, wanting. 
Remarks : — Both this and the foregoing bird are most curious ; it is difficult to say in what 
order .they ought to be placed, the external form being equally ambiguous with the internal 
structure. 
The digestive organs nearly agree with that of many insessorial birds ; the pelvis also approaches 
nearly in form to that of the thrush; the sternum, however, differs altogether from any form found 
in that order, and is precisely that of a Picus. The coracoids are lengthened ; the os furcatum is 
furnished with only a slight process where it approaches the sternum, in which particulars, also in 
the form of the ribs, it agrees with the Picidce. 
Having found the internal structure so curious, and so contrary to what I expected, I was led 
to examine the external more minutely than I had before done. The same form of claw is found 
in several species among the cuckoos, in the genus Pelophilus, for instance ; the two outer toes 
are zygodactyle, being united together as far as the first joint; the bill, at first sight, might be 
taken for that of a gallinaceous bird ; but in searching among the order Scansores, for some resem- 
blance, I find the same structure in several of the cuckoo family, with the exception of the nostrils 
being nearer to the apex of the bill in Pterotochos. The Australian genus Menura is, probably, 
allied to this, but differs in the structure of the nostrils.* 
SYNALLAXIS MALUROIDES. B'Orb. (Female.) 
Tongue pointed, furnished at the base with two strong spines, the sides of which are armed with 
smaller ones ; trachea, oesophagus, and proventriculus as in Furnarius and Uppucerthia ; gizzard 
rounded, not very muscular, lined with a slightly hardened smooth coat, and filled with the 
remains of insects ; intestinal canal of moderate size and length, furnished with two rudimentary 
cseca. 
inches 
Length of oesophagus and proventriculus lg 
gizzard § 
Breadth of ditto -jg 
inches 
Length of intestinal canal from gizzard to cloaca 4f 
from cseca to cloaca f 
The parts of the skeleton of this bird which I was able to preserve, were more closely allied 
to the corresponding ones of Troglodytes than to those of any other genus in my possession, but 
differ in the following particulars : the lateral processes of the sternum bounding the posterior 
fissures are not so much expanded, consequently the fissures themselves are smaller ; the keel is 
rather deeper ; the portion to which the ribs are attached does not project so far forwards, but the 
* Since the above was in type, I have had, through the kindness of Mr. Gould, an opportunity of examining Menura lyra, 
and find my former supposition to be correct ; hut neither of these genera can be placed among the gallinaceous birds where the 
latter bird has been arranged by some authors. 
