34 Bonaparte^ s Catalogue of Birds. 
356. •CoLTMBus ARCTicrs, L. (?) Colymbus arcticus, Lath. Temm.— 
Buff. pi. enl. 914, young. 
11357. *Coi.T3iBti8 SEPTENTRioNALis, Spccklcd Divcr of Wilson's list. (a) 
[L. Buff. pi. enl. 308, adult; id. 992, 
young. 
GENUS 79. *URIA, Briss. 
SUBGENUS I. *URIA. 
358. *Uria tkoile, Lath, (b) Colymbus troile, L.— Buff. pi. enl. 
903, adult summer dress. 
359. *Urijl GRTiLE, Lath. Colymbus grylle, L. 
SUBGENUS ri. *CEPHUS, CuV. 
360. *Uria alle, Temm. Alca alle, WUs. 9. p. 94, pi. 74, 
fig. 5. 
GENUS 80. *MORMON, 111. 
{1361. *MoRMON ARCTiCA, Nob. Puffiu of Wilson's list.— Buff. pi. 
enl. 275. 
GENUS 81. *ALCA, L. 
11362. *Ai.cA TORDA, L. Razor-bill of Wilson's list.— Buff. pi. 
enl. 1104, adult winter dress; id. 
1103, adult summer dress. 
IIEGAPITULATJON. 
Species given by Wilson, - 270 (179 land. 
Species given in my first volum€y 16 (16 ** 
Species to be given in my sub- 
SEaUENT VOLUMES, - - 76 ( 14 
of which II twenty -four were in- 
dicated by Wilson. 
91 water birds) 
00 «* " ) 
62 " ) 
562 (209 land, 153 water birds.) 
* Species common to the United 
States and Europe, - - 116 ( 27 land, 
Species not found in Europe, 246 (182 '* 
89 water birds) 
64 " ) 
362 (209 land, 153 water birds.) 
Of the 81 genera in which the 362 species inhabiting the U. States 
are classed in our system, 63* are common to Europe and America, 
whilst 18 have no representative in the former country. 
Out of 37 natural families tljat we admit in the class of birds, North 
America possesses 28, of which two only are not found also in Europe. 
(a) This narae (Colymbus stellatus, aiict.) belongs exclusively to the young; "we 
have nevei- met with t'.ie adult in the United States. 
(b) Here ought to be placed Uria brunniehii, Sabine, so common in Baffin's Bay 
and other high noi'thern latitudes; but we have not been able to trace it along the 
«-oast of the United States. 
