154 ARCTOMYS, ARDEA. 
4—4. Arcromys. Spec. 11. 
monax, (marmot,) ears short, round ; nose bluish ; 
tail longish, hairy ; body grey. 
empetra, (canadian marmot,) ears short, round ; 
tail hairy ; body mixed grey above, orange be- 
neath. About 11 inches long. Very gentle but 
hisses. 
alpinus, tail short ; colour greyish-yellow, becom- 
ing ash-coloured towards the head. About the 
size of a rabbit, and inhabiting high mountains, 
near the limits of perpetual snow. 
See MS. P. 
2—5. ARpdEA. Spec. 87. 
Section A. Head bald. 
canadensis, (brown crane, ) forehead naked, papil- 
lose ; body cinereous ; wings testaceous on the 
outside. Three feet long. 
rus, (common crane,) hind-head naked, papil- 
lose ; cap and quill-feathers black 5; bedy cine- 
reous ; tail-feathers Jagged. 5 feet long. 
americana, (hooping crane,) crown, nape and na- 
ked temples papillose ; front, nape and prima- 
ry quill-feathers black ; body white. 4 feet 6 
inches long. 
Section B. Middle claw serrate inwardly. 
major, (common heron,) hind-head with long pen- 
dant crest ; body cinereous ; line on the neck 
beneath the pectoral bar black. Head of female 
smooth. 
stellaris, (heron,) head smoothish ; body testaceous 
above with transverse spots, paler beneath, 
with oblong brown spots. 
See MS, P. 
