1891.] On the Genus Chlamydophorus. - S45 
suggests a similitude to the common ear-trumpet used by the 
deaf, particularly as it is capable of limited movements. 
The præsternum is broad for the articulation of the first rib. 
It has also a sharp crest or keel upon its anterior surface, being 
decidedly bird-like in its character., 
The scapula presents several modifications. The prescapular 
border is deeply notched; the posterior border of the postscapula 
is greatly elongated, being sickle-shaped. The dorsum has a 
second spine, smaller, but parallel to and beneath the true 
spine. The acromion is very long, passing forwards, downwards, 
and inwards over the head of the humerus to, be articulated with 
the complete clavicle. The humerus, large and broad, has a 
prominent deltoid ridge. The epicondyles are both much produced 
transversely, the inner one being perforated. The radius is small. 
the ulna much flattened, with an olecranon process nearly as long 
as the shaft. The first and second digits of the manus are slender 
and elongated, and both have the normal number of phalanges. 
The other three have the metacarpal short and broad, the proxi- 
‘mal phalanx suppressed, the middle very short, and the ungual 
phalanges enormously developed, that of the third being the 
longest. 
The femur is large and strong, with a well-developed third 
trochanter. The tibia and fibula are firmly anchylosed at each 
extremity, and arched in opposite directions. The os calcis is’ 
elongated backwards and flattened. The pes is normal in type, and 
Presents no modifications. Both manus and pes are plantigrade. 
The following abstracts are from the notes on C. truncatus by 
E. W- White, F.Z.S., London, published in the Transactions : 
“I was induced in August, 1879, to undertake a ride of forty 
leagues from Mendoza, and a diligent search for six days, in com- 
pany with a large number of men, in order to obtain a better 
knowledge of its habits. I was fortunate enough to secure one 
living specimen of C. truncatus, which, in spite of the utmost 
attention, survived capture only three days; in fact, no instance 
has occurred of a longer survival in captivity than eight days. 
“The usual drawings of this animal in zoological works are 
erroneous in more than one particular. 
